Tag Archives: bbed

利用bbed找回ORACLE更新前值

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模拟数据块更新

SQL> create table t_xifenfei(id number,name varchar2(10));

Table created.

SQL> insert into t_xifenfei values(1,'XFF');

1 row created.

SQL> insert into t_xifenfei values(2,'CHF');

1 row created.

SQL> commit; 

Commit complete.

SQL> alter system checkpoint;

System altered.

SQL> select id,rowid,
  2  dbms_rowid.rowid_relative_fno(rowid)rel_fno,
  3  dbms_rowid.rowid_block_number(rowid)blockno,
  4  dbms_rowid.rowid_row_number(rowid) rowno
  5  from t_xifenfei;

        ID ROWID                 REL_FNO    BLOCKNO      ROWNO
---------- ------------------ ---------- ---------- ----------
         1 AAASc+AAEAAAACvAAA          4        175          0
         2 AAASc+AAEAAAACvAAB          4        175          1

SQL> select dump(1,'16') from dual;

DUMP(1,'16')
-----------------
Typ=2 Len=2: c1,2

SQL> select dump(2,'16') from dual;

DUMP(2,'16')
-----------------
Typ=2 Len=2: c1,3

SQL> select dump('XFF','16') FROM DUAL;

DUMP('XFF','16')
----------------------
Typ=96 Len=3: 58,46,46

SQL> SELECT DUMP('CHF','16') FROM DUAL;

DUMP('CHF','16')
----------------------
Typ=96 Len=3: 43,48,46

SQL> update t_xifenfei set name='XIFENFEI' where id=1;

1 row updated.

SQL> commit;

Commit complete.

SQL> select dump('XIFENFEI','16') from dual;

DUMP('XIFENFEI','16')
-------------------------------------
Typ=96 Len=8: 58,49,46,45,4e,46,45,49

SQL> alter system checkpoint;

System altered.

SQL> select * from t_xifenfei;

        ID NAME
---------- ----------
         1 XIFENFEI
         2 CHF

这里我们对数据库进行了一次更新操作,并且dump出来对应值,为了方便定位到相应记录

bbed查看相关值

[oracle@xifenfei ~]$ bbed listfile=listfile mode=edit password=blockedit

BBED: Release 2.0.0.0.0 - Limited Production on Wed Aug 8 20:50:47 2012

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

************* !!! For Oracle Internal Use only !!! ***************

BBED> set file 4 block 175
        FILE#           4
        BLOCK#          175

BBED> map
 File: /u01/oracle/oradata/ora11g/users01.dbf (4)
 Block: 175                                   Dba:0x010000af
------------------------------------------------------------
 KTB Data Block (Table/Cluster)

 struct kcbh, 20 bytes                      @0       

 struct ktbbh, 72 bytes                     @20      

 struct kdbh, 14 bytes                      @100     

 struct kdbt[1], 4 bytes                    @114     

 sb2 kdbr[2]                                @118     

 ub1 freespace[8031]                        @122     

 ub1 rowdata[35]                            @8153    

 ub4 tailchk                                @8188 

BBED> p kdbr
sb2 kdbr[0]                                 @118      8053
sb2 kdbr[1]                                 @120      8068

BBED> p *kdbr[1]
rowdata[15]
-----------
ub1 rowdata[15]                             @8168     0x2c

BBED> x /rnc
rowdata[15]                                 @8168    
-----------
flag@8168: 0x2c (KDRHFL, KDRHFF, KDRHFH)
lock@8169: 0x00
cols@8170:    2

col    0[2] @8171: 2 
col    1[3] @8174: CHF

BBED> p *kdbr[0]
rowdata[0]
----------
ub1 rowdata[0]                              @8153     0x2c

BBED> x /rnc
rowdata[0]                                  @8153    
----------
flag@8153: 0x2c (KDRHFL, KDRHFF, KDRHFH)
lock@8154: 0x02
cols@8155:    2

col    0[2] @8156: 1 
col    1[8] @8159: XIFENFEI

BBED> set count 64
        COUNT           64

 <32 bytes per line>

BBED> d /v
 File: /u01/oracle/oradata/ora11g/users01.dbf (4)
 Block: 175     Offsets: 8153 to 8191  Dba:0x010000af
-------------------------------------------------------
 2c020202 c1020858 4946454e 4645492c l ,......XIFENFEI,
 000202c1 03034348 462c0002 02c10203 l ......CHF,......
 58464602 068de8                     l XFF....

 <16 bytes per line>

使用bbed找回历史值

--准备工作,通过dump出来的值,推算出来第一条记录的起点02c10203584646,
--在这个值的基础上offset-3得到offset值为8078

BBED> p kdbr
sb2 kdbr[0]                                 @118      8053
sb2 kdbr[1]                                 @120      8068

--修改row directory指针位置
BBED> m /x 8e1f
 File: /u01/oracle/oradata/ora11g/users01.dbf (4)
 Block: 175              Offsets:  118 to  181           Dba:0x010000af
------------------------------------------------------------------------
 8e1f841f 00000000 00000000 00000000 00000000 00000000 00000000 00000000 
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 

 <32 bytes per line>

BBED> p kdbr
sb2 kdbr[0]                                 @118      8078
sb2 kdbr[1]                                 @120      8068

BBED> sum apply
Check value for File 4, Block 175:
current = 0xdff8, required = 0xdff8

BBED> verify
DBVERIFY - Verification starting
FILE = /u01/oracle/oradata/ora11g/users01.dbf
BLOCK = 175

Block Checking: DBA = 16777391, Block Type = KTB-managed data block
data header at 0xb53cd264
kdbchk: xaction header lock count mismatch
        trans=2 ilk=1 nlo=0     --提示事务锁错误
Block 175 failed with check code 6108

DBVERIFY - Verification complete

Total Blocks Examined         : 1
Total Blocks Processed (Data) : 1
Total Blocks Failing   (Data) : 1
Total Blocks Processed (Index): 0
Total Blocks Failing   (Index): 0
Total Blocks Empty            : 0
Total Blocks Marked Corrupt   : 0
Total Blocks Influx           : 0
Message 531 not found;  product=RDBMS; facility=BBED

BBED> p *kdbr[0] 
rowdata[25]
-----------
ub1 rowdata[25]                             @8178     0x2c

BBED> d
 File: /u01/oracle/oradata/ora11g/users01.dbf (4)
 Block: 175              Offsets: 8178 to 8191           Dba:0x010000af
------------------------------------------------------------------------
 2c000202 c1020358 46460206 8de8 

 <32 bytes per line>

BBED> x /rnc
rowdata[25]                                 @8178    
-----------
flag@8178: 0x2c (KDRHFL, KDRHFF, KDRHFH)
lock@8179: 0x00  --被更新前的记录事务锁标识为0,而更新后的事务锁标识为2
cols@8180:    2

col    0[2] @8181: 1 
col    1[3] @8184: XFF

--修改事务锁标识为2
BBED> m /x 02 offset 8179
 File: /u01/oracle/oradata/ora11g/users01.dbf (4)
 Block: 175              Offsets: 8179 to 8191           Dba:0x010000af
------------------------------------------------------------------------
 020202c1 02035846 4602068d e8 

 <32 bytes per line>

BBED> set offset 8153
        OFFSET          8153

BBED> d
 File: /u01/oracle/oradata/ora11g/users01.dbf (4)
 Block: 175              Offsets: 8153 to 8191           Dba:0x010000af
------------------------------------------------------------------------
 2c020202 c1020858 4946454e 4645492c 000202c1 03034348 462c0202 02c10203 
 58464602 068de8 

 <32 bytes per line>

--把更新后值的事务锁标识改为0
BBED> m /x 00 offset +1
 File: /u01/oracle/oradata/ora11g/users01.dbf (4)
 Block: 175              Offsets: 8154 to 8191           Dba:0x010000af
------------------------------------------------------------------------
 000202c1 02085849 46454e46 45492c00 0202c103 03434846 2c020202 c1020358 
 46460206 8de8 

 <32 bytes per line>

BBED> sum apply
Check value for File 4, Block 175:
current = 0xddfa, required = 0xddfa

BBED> verify
DBVERIFY - Verification starting
FILE = /u01/oracle/oradata/ora11g/users01.dbf
BLOCK = 175

Block Checking: DBA = 16777391, Block Type = KTB-managed data block
data header at 0xb53cd264
kdbchk: the amount of space used is not equal to block size
        used=42 fsc=0 avsp=8041 dtl=8088   -->提示块的空间使用不正确
Block 175 failed with check code 6110

DBVERIFY - Verification complete

Total Blocks Examined         : 1
Total Blocks Processed (Data) : 1
Total Blocks Failing   (Data) : 1
Total Blocks Processed (Index): 0
Total Blocks Failing   (Index): 0
Total Blocks Empty            : 0
Total Blocks Marked Corrupt   : 0
Total Blocks Influx           : 0
Message 531 not found;  product=RDBMS; facility=BBED

BBED> p ktbbh
struct ktbbh, 72 bytes                      @20      
   ub1 ktbbhtyp                             @20       0x01 (KDDBTDATA)
   union ktbbhsid, 4 bytes                  @24      
      ub4 ktbbhsg1                          @24       0x0001273e
      ub4 ktbbhod1                          @24       0x0001273e
   struct ktbbhcsc, 8 bytes                 @28      
      ub4 kscnbas                           @28       0x0000e88a
      ub2 kscnwrp                           @32       0x0002
   sb2 ktbbhict                             @36       2
   ub1 ktbbhflg                             @38       0x32 (NONE)
   ub1 ktbbhfsl                             @39       0x00
   ub4 ktbbhfnx                             @40       0x010000a8
   struct ktbbhitl[0], 24 bytes             @44      
      struct ktbitxid, 8 bytes              @44      
         ub2 kxidusn                        @44       0x0006
         ub2 kxidslt                        @46       0x001e
         ub4 kxidsqn                        @48       0x000002c6
      struct ktbituba, 8 bytes              @52      
         ub4 kubadba                        @52       0x00c000d9
         ub2 kubaseq                        @56       0x0086
         ub1 kubarec                        @58       0x2a
      ub2 ktbitflg                          @60       0x8000 (KTBFCOM)
      union _ktbitun, 2 bytes               @62      
         sb2 _ktbitfsc                      @62       2   
         ub2 _ktbitwrp                      @62       0x0002
      ub4 ktbitbas                          @64       0x0000e550
   struct ktbbhitl[1], 24 bytes             @68      
      struct ktbitxid, 8 bytes              @68      
         ub2 kxidusn                        @68       0x0006
         ub2 kxidslt                        @70       0x0008
         ub4 kxidsqn                        @72       0x000002c7
      struct ktbituba, 8 bytes              @76      
         ub4 kubadba                        @76       0x00c000da
         ub2 kubaseq                        @80       0x0086
         ub1 kubarec                        @82       0x12
      ub2 ktbitflg                          @84       0x2001 (KTBFUPB)
      union _ktbitun, 2 bytes               @86      
         sb2 _ktbitfsc                      @86       0
         ub2 _ktbitwrp                      @86       0x0000
      ub4 ktbitbas                          @88       0x0000e88d

--所有的_ktbitfsc修改为0
BBED> m /x 00 offset 62
 File: /u01/oracle/oradata/ora11g/users01.dbf (4)
 Block: 175              Offsets:   62 to  125           Dba:0x010000af
------------------------------------------------------------------------
 000050e5 00000600 0800c702 0000da00 c0008600 12000120 00008de8 00000000 
 00000000 00000001 0200ffff 1600751f 691f691f 00000200 8e1f841f 00000000 

 <32 bytes per line>

BBED> sum apply
Check value for File 4, Block 175:
current = 0xddf8, required = 0xddf8

BBED> verify
DBVERIFY - Verification starting
FILE = /u01/oracle/oradata/ora11g/users01.dbf
BLOCK = 175

Block Checking: DBA = 16777391, Block Type = KTB-managed data block
data header at 0xb53cd264
kdbchk: the amount of space used is not equal to block size
        used=42 fsc=0 avsp=8041 dtl=8088
Block 175 failed with check code 6110

DBVERIFY - Verification complete

Total Blocks Examined         : 1
Total Blocks Processed (Data) : 1
Total Blocks Failing   (Data) : 1
Total Blocks Processed (Index): 0
Total Blocks Failing   (Index): 0
Total Blocks Empty            : 0
Total Blocks Marked Corrupt   : 0
Total Blocks Influx           : 0
Message 531 not found;  product=RDBMS; facility=BBED

BBED> p kdbh
struct kdbh, 14 bytes                       @100     
   ub1 kdbhflag                             @100      0x00 (NONE)
   sb1 kdbhntab                             @101      1
   sb2 kdbhnrow                             @102      2
   sb2 kdbhfrre                             @104     -1
   sb2 kdbhfsbo                             @106      22
   sb2 kdbhfseo                             @108      8053
   sb2 kdbhavsp                             @110      8045
   sb2 kdbhtosp                             @112      8045

--修改kdbhtosp和kdbhavsp值
BBED>  m /x 6e1f  offset 112
 File: /u01/oracle/oradata/ora11g/users01.dbf (4)
 Block: 175              Offsets:  112 to  175           Dba:0x010000af
------------------------------------------------------------------------
 6e1f0000 02008e1f 841f0000 00000000 00000000 00000000 00000000 00000000 
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 

 <32 bytes per line>

BBED> m /x  6e1f  offset 110
 File: /u01/oracle/oradata/ora11g/users01.dbf (4)
 Block: 175              Offsets:  110 to  173           Dba:0x010000af
------------------------------------------------------------------------
 6e1f6e1f 00000200 8e1f841f 00000000 00000000 00000000 00000000 00000000 
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 

 <32 bytes per line>

BBED> sum apply
Check value for File 4, Block 175:
current = 0xddf8, required = 0xddf8

--数据块验证通过
BBED> verify
DBVERIFY - Verification starting
FILE = /u01/oracle/oradata/ora11g/users01.dbf
BLOCK = 175


DBVERIFY - Verification complete

Total Blocks Examined         : 1
Total Blocks Processed (Data) : 1
Total Blocks Failing   (Data) : 0
Total Blocks Processed (Index): 0
Total Blocks Failing   (Index): 0
Total Blocks Empty            : 0
Total Blocks Marked Corrupt   : 0
Total Blocks Influx           : 0
Message 531 not found;  product=RDBMS; facility=BBED

重启数据库

SQL> shutdown abort
ORACLE instance shut down.
SQL> startup
ORACLE instance started.

Total System Global Area  313860096 bytes
Fixed Size                  1344652 bytes
Variable Size             251661172 bytes
Database Buffers           54525952 bytes
Redo Buffers                6328320 bytes
Database mounted.
Database opened.

--找回更新前值
SQL> select * from chf.t_xifenfei;

        ID NAME
---------- ----------
         1 XFF
         2 CHF

ORACLE update 操作内部原理

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对于oracle的update操作,在数据块中具体是如何出来,是直接更新原来值,还是通过插入新值修改指针的方法实现.下面通过证明:
模拟表插入数据

SQL> create table t_xifenfei(id number,name varchar2(10));

Table created.

SQL> insert into t_xifenfei values(1,'XFF');

1 row created.

SQL> insert into t_xifenfei values(2,'CHF');

1 row created.

SQL> commit; 

Commit complete.

SQL> alter system checkpoint;

System altered.

SQL> select id,rowid,
  2  dbms_rowid.rowid_relative_fno(rowid)rel_fno,
  3  dbms_rowid.rowid_block_number(rowid)blockno,
  4  dbms_rowid.rowid_row_number(rowid) rowno
  5  from t_xifenfei;

        ID ROWID                 REL_FNO    BLOCKNO      ROWNO
---------- ------------------ ---------- ---------- ----------
         1 AAASc+AAEAAAACvAAA          4        175          0
         2 AAASc+AAEAAAACvAAB          4        175          1

SQL> alter system dump datafile 4 block 175;

System altered.

SQL>  select value from v$diag_info where name='Default Trace File';

VALUE
--------------------------------------------------------------------------------
/u01/oracle/diag/rdbms/ora11g/ora11g/trace/ora11g_ora_24625.trc

数据存储对应16进制值

SQL> select dump(1,'16') from dual;

DUMP(1,'16')
-----------------
Typ=2 Len=2: c1,2

SQL> select dump(2,'16') from dual;

DUMP(2,'16')
-----------------
Typ=2 Len=2: c1,3

SQL> select dump('XFF','16') FROM DUAL;

DUMP('XFF','16')
----------------------
Typ=96 Len=3: 58,46,46

SQL> SELECT DUMP('CHF','16') FROM DUAL;

DUMP('CHF','16')
----------------------
Typ=96 Len=3: 43,48,46

得出第一条记录对应值为:02c10203584646;第二条记录对应值为:02c10303434846

dump 数据块得到记录

bdba: 0x010000af
data_block_dump,data header at 0xb683c064
===============
tsiz: 0x1f98
hsiz: 0x16
pbl: 0xb683c064
     76543210
flag=--------
ntab=1
nrow=2
frre=-1
fsbo=0x16
fseo=0x1f84
avsp=0x1f6e
tosp=0x1f6e
0xe:pti[0]      nrow=2  offs=0
0x12:pri[0]     offs=0x1f8e    ---->8078
0x14:pri[1]     offs=0x1f84    ---->8068
block_row_dump:
tab 0, row 0, @0x1f8e
tl: 10 fb: --H-FL-- lb: 0x1  cc: 2
col  0: [ 2]  c1 02
col  1: [ 3]  58 46 46
tab 0, row 1, @0x1f84
tl: 10 fb: --H-FL-- lb: 0x1  cc: 2
col  0: [ 2]  c1 03
col  1: [ 3]  43 48 46
end_of_block_dump
End dump data blocks tsn: 4 file#: 4 minblk 175 maxblk 175

bbed查看相关记录

BBED> p kdbr
sb2 kdbr[0]                                 @118      8078 <--第一条row directory指针位置
sb2 kdbr[1]                                 @120      8068 <--第二条row directory指针位置

BBED> p *kdbr[0] 
rowdata[10]
-----------
ub1 rowdata[10]                             @8178     0x2c

BBED> x /rnc  
rowdata[10]                                 @8178    
-----------
flag@8178: 0x2c (KDRHFL, KDRHFF, KDRHFH)
lock@8179: 0x01
cols@8180:    2

col    0[2] @8181: 1 
col    1[3] @8184: XFF


BBED> p *kdbr[1]
rowdata[0]
----------
ub1 rowdata[0]                              @8168     0x2c

BBED> x /rnc
rowdata[0]                                  @8168    
----------
flag@8168: 0x2c (KDRHFL, KDRHFF, KDRHFH)
lock@8169: 0x01
cols@8170:    2

col    0[2] @8171: 2 
col    1[3] @8174: CHF


BBED> d
 File: /u01/oracle/oradata/ora11g/users01.dbf (4)
 Block: 175              Offsets: 8168 to 8191           Dba:0x010000af
------------------------------------------------------------------------
 2c010202 c1030343 48462c01 0202c102 03584646 010650e5 

 <32 bytes per line>

这里可以得到结论如下:
1.数据是从块的底部开始往上存储
2.在每一条记录的头部分别有flag/lock/cols对应这里的2c0102
3.这里的偏移量和dump出来的数据可以看出来两条记录是连续在一起(偏移量分别为:8168和8178)

更新一条记录

SQL> update t_xifenfei set name='XIFENFEI' where id=1;

1 row updated.

SQL> commit;

Commit complete.

SQL> alter system checkpoint;

System altered.

SQL> alter system dump datafile 4 block 175;

System altered.

SQL> select dump('XIFENFEI','16') from dual;

DUMP('XIFENFEI','16')
-------------------------------------
Typ=96 Len=8: 58,49,46,45,4e,46,45,49

我们可以但看到值有XFF改变为XIFENFEI,存储长度变大

dump数据块信息

bdba: 0x010000af
data_block_dump,data header at 0xb683c064
===============
tsiz: 0x1f98
hsiz: 0x16
pbl: 0xb683c064
     76543210
flag=--------
ntab=1
nrow=2
frre=-1
fsbo=0x16
fseo=0x1f75
avsp=0x1f69
tosp=0x1f69
0xe:pti[0]      nrow=2  offs=0
0x12:pri[0]     offs=0x1f75    ---->8053
0x14:pri[1]     offs=0x1f84    ---->8068
block_row_dump:
tab 0, row 0, @0x1f75
tl: 15 fb: --H-FL-- lb: 0x2  cc: 2
col  0: [ 2]  c1 02
col  1: [ 8]  58 49 46 45 4e 46 45 49
tab 0, row 1, @0x1f84
tl: 10 fb: --H-FL-- lb: 0x0  cc: 2
col  0: [ 2]  c1 03
col  1: [ 3]  43 48 46
end_of_block_dump
End dump data blocks tsn: 4 file#: 4 minblk 175 maxblk 175

通过对比第一次dump出来的数据块发现:row 0的值和偏移量发生了变化

bbed查看相关记录

BBED> set file 4 block 175
        FILE#           4
        BLOCK#          175

BBED> map
 File: /u01/oracle/oradata/ora11g/users01.dbf (4)
 Block: 175                                   Dba:0x010000af
------------------------------------------------------------
 KTB Data Block (Table/Cluster)

 struct kcbh, 20 bytes                      @0       

 struct ktbbh, 72 bytes                     @20      

 struct kdbh, 14 bytes                      @100     

 struct kdbt[1], 4 bytes                    @114     

 sb2 kdbr[2]                                @118     

 ub1 freespace[8031]                        @122     

 ub1 rowdata[35]                            @8153    

 ub4 tailchk                                @8188    

BBED> p kdbr
sb2 kdbr[0]                                 @118      8053   <--第一条row directory指针位置
sb2 kdbr[1]                                 @120      8068   <--第二条row directory指针位置

BBED> p *kdbr[1]
rowdata[15]
-----------
ub1 rowdata[15]                             @8168     0x2c

BBED> x /rnc
rowdata[15]                                 @8168    
-----------
flag@8168: 0x2c (KDRHFL, KDRHFF, KDRHFH)
lock@8169: 0x00
cols@8170:    2

col    0[2] @8171: 2 
col    1[3] @8174: CHF


BBED> p *kdbr[0]
rowdata[0]
----------
ub1 rowdata[0]                              @8153     0x2c


BBED> x /r
rowdata[0]                                  @8153    
----------
flag@8153: 0x2c (KDRHFL, KDRHFF, KDRHFH)
lock@8154: 0x02
cols@8155:    2

col    0[2] @8156:  0xc1  0x02 
col    1[8] @8159:  0x58  0x49  0x46  0x45  0x4e  0x46  0x45  0x49 

BBED> set count 64
        COUNT           64

 <32 bytes per line>

BBED> d /v
 File: /u01/oracle/oradata/ora11g/users01.dbf (4)
 Block: 175     Offsets: 8153 to 8191  Dba:0x010000af
-------------------------------------------------------
 2c020202 c1020858 4946454e 4645492c l ,......XIFENFEI,
 000202c1 03034348 462c0002 02c10203 l ......CHF,......
 58464602 068de8                     l XFF....

 <16 bytes per line>

从这里可以看到
1.这里可以看到三个值(XFF,CHF,XIFENFEI)均存在,但是通过p kdbr和dump block不能看到,因为row directory中无指针指定到该值上
2.也是通过row directory指针使得我们从原先看到的第一条记录处于数据块最底部变成了现在相对而言的数据部分最上层,
3.绝大多数情况:数据库更新一条记录,不是直接修改数据值,而是重新插入一条新记录,然后修改row directory指针指定到新的offset上
4.不是直接update,而是insert+指针来实现,这样做的好处:1)如果修改记录update值的长度发生变化(变大或者变小)那么该值之前的数据都要发生变动,对数据库来说成本太高.2)如果直接更新值可能导致其他数据变动,使得其他行受到影响.
5.由于是修改row directory指针,所以该处理方法的rowid值不会发生变化

使用bbed解决ORA-00607/ORA-00600[4194]故障

Posted on by

ORA-00607/ORA-00600[4194]错误
数据库启动因为出现ORA-00607/ORA-00600[4194],导致数据库不能正常open

Fri Nov  4 23:10:37 2011
SMON: enabling cache recovery
Fri Nov  4 23:10:37 2011
ARC2: Archival started
ARC0: STARTING ARCH PROCESSES COMPLETE
ARC0: Becoming the heartbeat ARCH
ARC2 started with pid=18, OS id=21535
Fri Nov  4 23:10:38 2011
Errors in file /u01/oracle/admin/XFF/udump/xff_ora_21529.trc:
ORA-00600: internal error code, arguments: [4194], [35], [6], [], [], [], [], []
Fri Nov  4 23:10:41 2011
Doing block recovery for file 1 block 18
Block recovery from logseq 2, block 48668 to scn 458453
Fri Nov  4 23:10:41 2011
Recovery of Online Redo Log: Thread 1 Group 1 Seq 2 Reading mem 0
  Mem# 0 errs 0: /u01/oracle/oradata/XFF/redo01.log
Block recovery stopped at EOT rba 2.48670.16
Block recovery completed at rba 2.48670.16, scn 0.458451
Doing block recovery for file 1 block 9
Block recovery from logseq 2, block 48668 to scn 458450
Fri Nov  4 23:10:41 2011
Recovery of Online Redo Log: Thread 1 Group 1 Seq 2 Reading mem 0
  Mem# 0 errs 0: /u01/oracle/oradata/XFF/redo01.log
Block recovery completed at rba 2.48670.16, scn 0.458451
Fri Nov  4 23:10:41 2011
Errors in file /u01/oracle/admin/XFF/udump/xff_ora_21529.trc:
ORA-00604: error occurred at recursive SQL level 1
ORA-00607: Internal error occurred while making a change to a data block
ORA-00600: internal error code, arguments: [4194], [35], [6], [], [], [], [], []
Error 604 happened during db open, shutting down database
USER: terminating instance due to error 604
Instance terminated by USER, pid = 21529
ORA-1092 signalled during: ALTER DATABASE OPEN...

分析trace文件

*** SESSION ID:(159.3) 2011-11-04 23:10:37.648
tkcrrsarc: (WARN) Failed to find ARCH for message (message:0x1)
tkcrrpa: (WARN) Failed initial attempt to send ARCH message (message:0x1)
*** ktuc_diag_dmp: dump of current change vector
ktudb redo: siz: 252 spc: 7200 flg: 0x0012 seq: 0x0037 rec: 0x06
            xid:  0x0000.022.00000028  
ktubl redo: slt: 34 rci: 0 opc: 11.1 objn: 15 objd: 15 tsn: 0
Undo type:  Regular undo        Begin trans    Last buffer split:  No 
Temp Object:  No 
Tablespace Undo:  No 
             0x00000000  prev ctl uba: 0x00400012.0037.1f 
prev ctl max cmt scn:  0x0000.0006c75b  prev tx cmt scn:  0x0000.0006c75d 
txn start scn:  0xffff.ffffffff  logon user: 0  prev brb: 4194318  prev bcl: 0 KDO undo record:
KTB Redo 
op: 0x04  ver: 0x01  
op: L  itl: xid:  0x0000.020.00000029 uba: 0x00400013.0037.05
                      flg: C---    lkc:  0     scn: 0x0000.0006fecb
KDO Op code: URP row dependencies Disabled
  xtype: XA flags: 0x00000000  bdba: 0x0040006a  hdba: 0x00400069
itli: 1  ispac: 0  maxfr: 4863
tabn: 0 slot: 1(0x1) flag: 0x2c lock: 0 ckix: 191
ncol: 17 nnew: 12 size: 0
col  1: [ 9]  5f 53 59 53 53 4d 55 31 24
col  2: [ 2]  c1 02
col  3: [ 2]  c1 03
col  4: [ 2]  c1 0a
col  5: [ 4]  c3 2e 55 0a
col  6: [ 1]  80
col  7: [ 3]  c2 02 59
col  8: [ 3]  c2 02 02
col  9: [ 1]  80
col 10: [ 2]  c1 03
col 11: [ 2]  c1 02
col 16: [ 2]  c1 02

*** 2011-11-04 23:10:38.086
ksedmp: internal or fatal error
ORA-00600: internal error code, arguments: [4194], [35], [6], [], [], [], [], []
Current SQL statement for this session:
update undo$ set name=:2,file#=:3,block#=:4,status$=:5,user#=:6,undosqn=:7,xactsqn=:8,scnbas=:9,
scnwrp=:10,inst#=:11,ts#=:12,spare1=:13 where us#=:1
----- Call Stack Trace -----
calling              call     entry                argument values in hex
location             type     point                (? means dubious value)
-------------------- -------- -------------------- ----------------------------
ksedst()+27          call     ksedst1()            0 ? 1 ?
ksedmp()+557         call     ksedst()             0 ? 0 ? 0 ? 0 ? 0 ? 0 ?
ksfdmp()+19          call     ksedmp()             3 ? BFFA8C28 ? AC152C0 ?
                                                   CBD2DA0 ? 3 ? BFFA9764 ?
kgeriv()+188         call     00000000             CBD2DA0 ? 3 ?
kseipre()+42         call     kgeriv()             CBD2DA0 ? B6A50020 ? 1062 ?
                                                   2 ? BFFA8C68 ? BFFA8C5C ?
ksesic2()+21         call     kseipre()            1062 ? 2 ? BFFA8C68 ?
                                                   32B36940 ? BFFA8D38 ?
                                                   8C4A3A9 ?
kturdb()+1757        call     ksesic2()            1062 ? 0 ? 23 ? 0 ? 0 ? 6 ?
                                                   0 ?
kco_issue_callback(  call     00000000             B6A09FA4 ? B6A0A01E ? 11 ?
)+176                                              2D306014 ? B6A387C0 ?
kcoapl()+2440        call     kco_issue_callback(  B6A09FA0 ? 2D306000 ?
                              )                    B6A387C0 ?
kcbapl()+322         call     kcoapl()             B6A09FA0 ? 2D306000 ? 1 ? 0 ?
                                                   2000 ? 0 ? B6A387C0 ?
kcrfw_redo_gen()+94  call     kcbapl()             B6A09FA0 ? 2D3F6A1C ?
10                                                 CBE3AE8 ? 0 ? B6A387C0 ?
kcbchg1_main()+8669  call     kcrfw_redo_gen()     3 ? BFFA9358 ? BFFA9370 ?
                                                   CBE3AE8 ? 0 ? BFFA9390 ?
kcbchg1()+63         call     kcbchg1_main()       0 ? 3 ? BFFA97B0 ? BFFA9798 ?
                                                   0 ? 0 ?
ktuchg()+3344        call     kcbchg1()            0 ? 3 ? BFFA97B0 ? BFFA9798 ?
                                                   0 ? 0 ?
ktbchg2()+493        call     ktuchg()             2 ? 2F9EEF8C ? 3 ? B6A0CA98 ?
                                                   B6A0CAA0 ? B6A09FA0 ?
                                                   B6A387C0 ? B6A0C7A0 ? 0 ? 0 ?
kddchg()+1661        call     ktbchg2()            0 ? 2F9EEF8C ? B6A0CA98 ?
                                                   B6A0CAA0 ? B6A09FA0 ?
                                                   B6A387B8 ? B6A0C7A0 ? 0 ? 0 ?
kduovw()+7960        call     kddchg()             B6A3877C ? B6A0CA98 ?
                                                   B6A0CAA0 ? B6A09FA0 ?
                                                   B6A0C7A0 ? 0 ? 0 ? BFFA9C58 ?
kduurp()+2316        call     kduovw()             B6A3877C ? 0 ? 10 ?
                                                   B6A357A4 ? 0 ? B6A3877C ?
kdusru()+4339        call     kduurp()             B6A3877C ? 958412D ?
                                                   CBDC720 ? BFFA9FEC ? B8 ?
                                                   B6A40380 ?
kauupd()+366         call     kdusru()             B6A357A4 ? 2F9EEFF8 ?
                                                   B6A3877C ? 0 ?
updrow()+5889        call     kauupd()             B6A357A0 ? 2F9EEFF8 ?
                                                   B6A3877C ? 0 ? 2FA479FC ? E ?
                                                   F ? 2F9EF31C ? 12 ?
                                                   BFFB0544 ? BFFB04E4 ?
qerupRowProcedure()  call     updrow()             2F9E5B64 ? 7FFF ? DB4 ? 48 ?
+62                                                2F9EFBF4 ? BFFB08B4 ?
qerupFetch()+1187    call     00000000             2F9EF4B0 ? 7FFF ?
updaul()+3474        call     00000000             2F9EF4B0 ? 0 ? 2F9EF370 ?
                                                   7FFF ?
updThreePhaseExe()+  call     updaul()             2F9E5B64 ? BFFB0D2C ? 0 ?
3470
updexe()+813         call     updThreePhaseExe()   2F9E5B64 ? 0 ? B6A3877C ?
                                                   BFFB0E00 ? 2F9E5B64 ? 1 ?
                                                   BFFB0E00 ? 0 ?
opiexe()+17967       call     updexe()             2F9E5B64 ? BFFB1074 ?
opiodr()+2347        call     00000000             4 ? 4 ? BFFB25A8 ?
rpidrus()+434        call     opiodr()             4 ? 4 ? BFFB25A8 ? 2 ?
skgmstack()+210      call     00000000             BFFB2004 ? 97492FE ?
                                                   CBD2E9C ? BFFB1FE8 ?
                                                   BFFB24EC ? BFFB2004 ?
rpidru()+98          call     skgmstack()          BFFB1FE8 ? CBD2B60 ? F618 ?
                                                   9749546 ? BFFB2004 ?
rpiswu2()+1061       call     00000000             BFFB24EC ? BFFB25E8 ?
                                                   BFFB2500 ? 2 ? BFFB24B0 ?
                                                   5953 ?
rpidrv()+1915        call     rpiswu2()            32F0A1D4 ? 0 ? BFFB24B0 ? 2 ?
                                                   BFFB2528 ? 0 ? BFFB24B0 ? 0 ?
                                                   9749800 ? 97498DC ?
                                                   BFFB24EC ? 8 ?
rpiexe()+65          call     rpidrv()             2 ? 4 ? BFFB25A8 ? 8 ?
ktuscu()+697         call     rpiexe()             2 ? 1C ? 2A ? 32FF3404 ? 0 ?
                                                   BFFB2710 ?
kqrcmt()+945         call     00000000             32AFA70C ? 3 ?
ktcrcm()+945         call     kqrcmt()             31A2B84C ? 1 ? 0 ?
ktuswr()+1855        call     ktcrcm()             31A2B84C ? 0 ? 0 ? 0 ? 0 ?
                                                   1 ? 0 ? 0 ?
ktusmous_online_und  call     ktuswr()             1 ? 0 ? 0 ? 0 ? 0 ? 0 ?
oseg()+951
ktusmout_online_ut(  call     ktusmous_online_und  1 ? A ? 0 ? 3 ?
)+737                         oseg()
ktusmiut_init_ut()+  call     ktusmout_online_ut(  1 ? 0 ? 0 ?
1084                          )
ktuini()+688         call     ktusmiut_init_ut()   0 ? BFFB4744 ? CBD2E9C ?
                                                   CBD2E9C ? CBD2DA0 ? 7 ?
adbdrv()+5699        call     ktuini()             0 ? 0 ? 0 ? 0 ? 64000000 ?
                                                   3 ?
opiexe()+18301       call     adbdrv()             59D4 ? 0 ? 9EE16E2F ? 494C4 ?
                                                   32B33CD0 ? 0 ?
opiosq0()+3918       call     opiexe()             4 ? 0 ? BFFB8988 ?
kpooprx()+250        call     opiosq0()            3 ? E ? BFFB8B90 ? A4 ?
kpoal8()+867         call     kpooprx()            BFFBAD68 ? BFFB990C ? 13 ?
                                                   1 ? 0 ? A4 ?
opiodr()+2347        call     00000000             5E ? 17 ? BFFBAD64 ?
ttcpip()+4227        call     00000000             5E ? 17 ? BFFBAD64 ? 0 ?
                                                   DABCA66 ? 93 ?
opitsk()+1991        call     ttcpip()             CBDA5A0 ? 5E ? BFFBAD64 ? 0 ?
                                                   BFFBA244 ? BFFBAE88 ?
opiino()+1387        call     opitsk()             0 ? 0 ?
opiodr()+2347        call     00000000             3C ? 4 ? BFFBB950 ?
opidrv()+915         call     opiodr()             3C ? 4 ? BFFBB950 ? 0 ?
sou2o()+113          call     opidrv()             3C ? 4 ? BFFBB950 ?
opimai_real()+212    call     sou2o()              BFFBB934 ? 3C ? 4 ?
                                                   BFFBB950 ?
main()+111           call     opimai_real()        2 ? BFFBB980 ?
__libc_start_main()  call     00000000             2 ? BFFBBA44 ? BFFBBA50 ?
+220                                               47D9A828 ? 0 ? 1 ?

--------------------- Binary Stack Dump ---------------------

数据库在open的时候,需要去修改undo$对象的状态,从2该为3(offline->online)这个时候需要使用到系统回滚段,但是在使用系统回滚段的时候,使用uba=0x00400012的时候发生异常,导致数据库不能正常open,从而出现了ORA-00600[4194]的错误.而出现这个故障的原因,很可能是由于file 1 block 18块的异常导致.我们需要做的,就是让数据库启动的时候不使用file 1 block 18的block,而让数据库去另外的分配一个undo块.

bbed清除rollback分配块信息

[oracle@xifenfei ~]$ bbed listfile=list mode=edit password=blockedit

BBED: Release 2.0.0.0.0 - Limited Production on Sat Nov 5 01:11:49 2011

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

************* !!! For Oracle Internal Use only !!! ***************

BBED> set file 1 block 9
        FILE#           1
        BLOCK#          9

BBED> map
 File: /u01/oracle/oradata/XFF/system01.dbf (1)
 Block: 9                                     Dba:0x00400009
------------------------------------------------------------
 Unlimited Undo Segment Header

 struct kcbh, 20 bytes                      @0       

 struct ktech, 72 bytes                     @20      

 struct ktemh, 16 bytes                     @92      

 struct ktetb[6], 48 bytes                  @108     

 struct ktuxc, 104 bytes                    @4148    

 struct ktuxe[255], 10200 bytes             @4252    

 ub4 tailchk                                @8188    


BBED> p ktuxc
struct ktuxc, 104 bytes                     @4148    
   struct ktuxcscn, 8 bytes                 @4148    
      ub4 kscnbas                           @4148     0x0006c75b
      ub2 kscnwrp                           @4152     0x0000
   struct ktuxcuba, 8 bytes                 @4156    
      ub4 kubadba                           @4156     0x00400012
      ub2 kubaseq                           @4160     0x0037
      ub1 kubarec                           @4162     0x1f
   sb2 ktuxcflg                             @4164     1 (KTUXCFSK)
   ub2 ktuxcseq                             @4166     0x0037
   sb2 ktuxcnfb                             @4168     1         
   ub4 ktuxcinc                             @4172     0x00000000
   sb2 ktuxcchd                             @4176     34
   sb2 ktuxcctl                             @4178     32
   ub2 ktuxcmgc                             @4180     0x8002
   ub4 ktuxcopt                             @4188     0x7ffffffe
   struct ktuxcfbp[0], 12 bytes             @4192    
      struct ktufbuba, 8 bytes              @4192    
         ub4 kubadba                        @4192     0x00400012
         ub2 kubaseq                        @4196     0x0037
         ub1 kubarec                        @4198     0x05
      sb2 ktufbext                          @4200     1
      sb2 ktufbspc                          @4202     7200
   struct ktuxcfbp[1], 12 bytes             @4204    
      struct ktufbuba, 8 bytes              @4204    
         ub4 kubadba                        @4204     0x00000000
         ub2 kubaseq                        @4208     0x0035
         ub1 kubarec                        @4210     0x2a
      sb2 ktufbext                          @4212     5
      sb2 ktufbspc                          @4214     3446
   struct ktuxcfbp[2], 12 bytes             @4216    
      struct ktufbuba, 8 bytes              @4216    
         ub4 kubadba                        @4216     0x00000000
         ub2 kubaseq                        @4220     0x0035
         ub1 kubarec                        @4222     0x37
      sb2 ktufbext                          @4224     5
      sb2 ktufbspc                          @4226     1336
   struct ktuxcfbp[3], 12 bytes             @4228    
      struct ktufbuba, 8 bytes              @4228    
         ub4 kubadba                        @4228     0x00000000
         ub2 kubaseq                        @4232     0x0000
         ub1 kubarec                        @4234     0x00
      sb2 ktufbext                          @4236     0
      sb2 ktufbspc                          @4238     0
   struct ktuxcfbp[4], 12 bytes             @4240    
      struct ktufbuba, 8 bytes              @4240    
         ub4 kubadba                        @4240     0x00000000
         ub2 kubaseq                        @4244     0x0000
         ub1 kubarec                        @4246     0x00
      sb2 ktufbext                          @4248     0
      sb2 ktufbspc                          @4250     0

BBED> set count 16
        COUNT           16

########################################################
使用bbed修改相关参数
########################################################

启动数据库

SQL> startup
ORACLE instance started.

Total System Global Area  318767104 bytes
Fixed Size                  1219160 bytes
Variable Size              96470440 bytes
Database Buffers          213909504 bytes
Redo Buffers                7168000 bytes
Database mounted.
Database opened.
SQL> select * from v$version;

BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
PL/SQL Release 10.2.0.1.0 - Production
CORE    10.2.0.1.0      Production
TNS for Linux: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production

通过bbed模拟ORA-00607/ORA-00600 4194 故障

Posted on by

在数据库恢复的案例中,遇到system rollback异常的故障算是中彩票了.处理起来比较麻烦,有些情况甚至是无法处理.这里通过试验模拟ORA-00607/ORA-00600[4194].类此的错误在一次银联的数据库恢复中也遇到过,不过当时由于功底不深,理解出现部分误差.
通过bbed模拟ORA-00607/ORA-00600[4194]错误

[oracle@xifenfei ~]$ bbed listfile=list mode=edit password=blockedit

BBED: Release 2.0.0.0.0 - Limited Production on Fri Nov 4 22:59:51 2011

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

************* !!! For Oracle Internal Use only !!! ***************

BBED> info
 File#  Name                                                        Size(blks)
 -----  ----                                                        ----------
     1  /u01/oracle/oradata/XFF/system01.dbf                                 0
     2  /u01/oracle/oradata/XFF/undotbs01.dbf                                0
     3  /u01/oracle/oradata/XFF/sysaux01.dbf                                 0
     4  /u01/oracle/oradata/XFF/users01.dbf                                  0
     5  /u01/oracle/oradata/XFF/datfttuser.dbf                               0

BBED> set block 9
        BLOCK#          9

BBED> map
 File: /u01/oracle/oradata/XFF/system01.dbf (1)
 Block: 9                                     Dba:0x00400009
------------------------------------------------------------
 Unlimited Undo Segment Header

 struct kcbh, 20 bytes                      @0       

 struct ktech, 72 bytes                     @20      

 struct ktemh, 16 bytes                     @92      

 struct ktetb[6], 48 bytes                  @108     

 struct ktuxc, 104 bytes                    @4148    

 struct ktuxe[255], 10200 bytes             @4252    

 ub4 tailchk                                @8188    


BBED> p ktuxc
struct ktuxc, 104 bytes                     @4148    
   struct ktuxcscn, 8 bytes                 @4148    
      ub4 kscnbas                           @4148     0x0006c75b
      ub2 kscnwrp                           @4152     0x0000
   struct ktuxcuba, 8 bytes                 @4156    
      ub4 kubadba                           @4156     0x00400012
      ub2 kubaseq                           @4160     0x0037
      ub1 kubarec                           @4162     0x1f
   sb2 ktuxcflg                             @4164     1 (KTUXCFSK)
   ub2 ktuxcseq                             @4166     0x0037
   sb2 ktuxcnfb                             @4168     1            <==free undo block num
   ub4 ktuxcinc                             @4172     0x00000000
   sb2 ktuxcchd                             @4176     34
   sb2 ktuxcctl                             @4178     32
   ub2 ktuxcmgc                             @4180     0x8002
   ub4 ktuxcopt                             @4188     0x7ffffffe
   struct ktuxcfbp[0], 12 bytes             @4192    
      struct ktufbuba, 8 bytes              @4192    
         ub4 kubadba                        @4192     0x00400013    <==uba (模拟试验修改为其他uba地址)
         ub2 kubaseq                        @4196     0x0037        <==uba sequence
         ub1 kubarec                        @4198     0x05
      sb2 ktufbext                          @4200     1
      sb2 ktufbspc                          @4202     7200
   struct ktuxcfbp[1], 12 bytes             @4204    
      struct ktufbuba, 8 bytes              @4204    
         ub4 kubadba                        @4204     0x00000000
         ub2 kubaseq                        @4208     0x0035
         ub1 kubarec                        @4210     0x2a
      sb2 ktufbext                          @4212     5
      sb2 ktufbspc                          @4214     3446
   struct ktuxcfbp[2], 12 bytes             @4216    
      struct ktufbuba, 8 bytes              @4216    
         ub4 kubadba                        @4216     0x00000000
         ub2 kubaseq                        @4220     0x0035
         ub1 kubarec                        @4222     0x37
      sb2 ktufbext                          @4224     5
      sb2 ktufbspc                          @4226     1336
   struct ktuxcfbp[3], 12 bytes             @4228    
      struct ktufbuba, 8 bytes              @4228    
         ub4 kubadba                        @4228     0x00000000
         ub2 kubaseq                        @4232     0x0000
         ub1 kubarec                        @4234     0x00
      sb2 ktufbext                          @4236     0
      sb2 ktufbspc                          @4238     0
   struct ktuxcfbp[4], 12 bytes             @4240    
      struct ktufbuba, 8 bytes              @4240    
         ub4 kubadba                        @4240     0x00000000
         ub2 kubaseq                        @4244     0x0000
         ub1 kubarec                        @4246     0x00
      sb2 ktufbext                          @4248     0
      sb2 ktufbspc                          @4250     0

BBED> set dba 0x00400013
        DBA             0x00400013 (4194323 1,19)

BBED> p ktubh
struct ktubh, 26 bytes                      @20      
   struct ktubhxid, 8 bytes                 @20      
      ub2 kxidusn                           @20       0x0000
      ub2 kxidslt                           @22       0x0020
      ub4 kxidsqn                           @24       0x00000029
   ub2 ktubhseq                             @28       0x0037    <==uba seq
   ub1 ktubhcnt                             @30       0x05
   ub1 ktubhirb                             @31       0x05
   ub1 ktubhicl                             @32       0x00
   ub1 ktubhflg                             @33       0x00
   ub2 ktubhidx[0]                          @34       0x1fe8
   ub2 ktubhidx[1]                          @36       0x1f2c
   ub2 ktubhidx[2]                          @38       0x1e70
   ub2 ktubhidx[3]                          @40       0x1db4
   ub2 ktubhidx[4]                          @42       0x1cf8
   ub2 ktubhidx[5]                          @44       0x1c3c

BBED> set dba 0x00400012
        DBA             0x00400012 (4194322 1,18)

BBED> p ktubh
struct ktubh, 86 bytes                      @20      
   struct ktubhxid, 8 bytes                 @20      
      ub2 kxidusn                           @20       0x0000
      ub2 kxidslt                           @22       0x0020
      ub4 kxidsqn                           @24       0x00000029
   ub2 ktubhseq                             @28       0x0037
   ub1 ktubhcnt                             @30       0x23
   ub1 ktubhirb                             @31       0x23
   ub1 ktubhicl                             @32       0x00
   ub1 ktubhflg                             @33       0x00
   ub2 ktubhidx[0]                          @34       0x1fe8
   …………
   ub2 ktubhidx[35]                         @104      0x00b4

BBED> set block 9
        BLOCK#          9

BBED> set count 16
        COUNT           16

BBED> m /x 12004000 offset 4192
Warning: contents of previous BIFILE will be lost. Proceed? (Y/N) y
 File: /u01/oracle/oradata/XFF/system01.dbf (1)
 Block: 9                Offsets: 4192 to 4207           Dba:0x00400009
------------------------------------------------------------------------
 12004000 37000500 0100201c 00000000 

 <32 bytes per line>

BBED>  p ktuxc
struct ktuxc, 104 bytes                     @4148    
   struct ktuxcscn, 8 bytes                 @4148    
      ub4 kscnbas                           @4148     0x0006c75b
      ub2 kscnwrp                           @4152     0x0000
   struct ktuxcuba, 8 bytes                 @4156    
      ub4 kubadba                           @4156     0x00400012
      ub2 kubaseq                           @4160     0x0037
      ub1 kubarec                           @4162     0x1f
   sb2 ktuxcflg                             @4164     1 (KTUXCFSK)
   ub2 ktuxcseq                             @4166     0x0037
   sb2 ktuxcnfb                             @4168     1
   ub4 ktuxcinc                             @4172     0x00000000
   sb2 ktuxcchd                             @4176     34
   sb2 ktuxcctl                             @4178     32
   ub2 ktuxcmgc                             @4180     0x8002
   ub4 ktuxcopt                             @4188     0x7ffffffe
   struct ktuxcfbp[0], 12 bytes             @4192    
      struct ktufbuba, 8 bytes              @4192    
         ub4 kubadba                        @4192     0x00400012  <==uba已经被修改
         ub2 kubaseq                        @4196     0x0037
         ub1 kubarec                        @4198     0x05
      sb2 ktufbext                          @4200     1
      sb2 ktufbspc                          @4202     7200
   struct ktuxcfbp[1], 12 bytes             @4204    
      struct ktufbuba, 8 bytes              @4204    
         ub4 kubadba                        @4204     0x00000000
         ub2 kubaseq                        @4208     0x0035
         ub1 kubarec                        @4210     0x2a
      sb2 ktufbext                          @4212     5
      sb2 ktufbspc                          @4214     3446
   struct ktuxcfbp[2], 12 bytes             @4216    
      struct ktufbuba, 8 bytes              @4216    
         ub4 kubadba                        @4216     0x00000000
         ub2 kubaseq                        @4220     0x0035
         ub1 kubarec                        @4222     0x37
      sb2 ktufbext                          @4224     5
      sb2 ktufbspc                          @4226     1336
   struct ktuxcfbp[3], 12 bytes             @4228    
      struct ktufbuba, 8 bytes              @4228    
         ub4 kubadba                        @4228     0x00000000
         ub2 kubaseq                        @4232     0x0000
         ub1 kubarec                        @4234     0x00
      sb2 ktufbext                          @4236     0
      sb2 ktufbspc                          @4238     0
   struct ktuxcfbp[4], 12 bytes             @4240    
      struct ktufbuba, 8 bytes              @4240    
         ub4 kubadba                        @4240     0x00000000
         ub2 kubaseq                        @4244     0x0000
         ub1 kubarec                        @4246     0x00
      sb2 ktufbext                          @4248     0
      sb2 ktufbspc                          @4250     0

BBED> sum apply
Check value for File 1, Block 9:
current = 0xe686, required = 0xe686

启动数据库

SQL> startup
ORACLE instance started.

Total System Global Area  318767104 bytes
Fixed Size                  1219160 bytes
Variable Size              96470440 bytes
Database Buffers          213909504 bytes
Redo Buffers                7168000 bytes
Database mounted.
ORA-01092: ORACLE instance terminated. Disconnection forced

alert日志

Fri Nov  4 23:10:37 2011
SMON: enabling cache recovery
Fri Nov  4 23:10:37 2011
ARC2: Archival started
ARC0: STARTING ARCH PROCESSES COMPLETE
ARC0: Becoming the heartbeat ARCH
ARC2 started with pid=18, OS id=21535
Fri Nov  4 23:10:38 2011
Errors in file /u01/oracle/admin/XFF/udump/xff_ora_21529.trc:
ORA-00600: internal error code, arguments: [4194], [35], [6], [], [], [], [], []
Fri Nov  4 23:10:41 2011
Doing block recovery for file 1 block 18
Block recovery from logseq 2, block 48668 to scn 458453
Fri Nov  4 23:10:41 2011
Recovery of Online Redo Log: Thread 1 Group 1 Seq 2 Reading mem 0
  Mem# 0 errs 0: /u01/oracle/oradata/XFF/redo01.log
Block recovery stopped at EOT rba 2.48670.16
Block recovery completed at rba 2.48670.16, scn 0.458451
Doing block recovery for file 1 block 9
Block recovery from logseq 2, block 48668 to scn 458450
Fri Nov  4 23:10:41 2011
Recovery of Online Redo Log: Thread 1 Group 1 Seq 2 Reading mem 0
  Mem# 0 errs 0: /u01/oracle/oradata/XFF/redo01.log
Block recovery completed at rba 2.48670.16, scn 0.458451
Fri Nov  4 23:10:41 2011
Errors in file /u01/oracle/admin/XFF/udump/xff_ora_21529.trc:
ORA-00604: error occurred at recursive SQL level 1
ORA-00607: Internal error occurred while making a change to a data block
ORA-00600: internal error code, arguments: [4194], [35], [6], [], [], [], [], []
Error 604 happened during db open, shutting down database
USER: terminating instance due to error 604
Instance terminated by USER, pid = 21529
ORA-1092 signalled during: ALTER DATABASE OPEN...

重现ORA-600 4000异常

Posted on by

对于数据库恢复感兴趣的人,一定对于ORA-600[4000]这个著名的错误记忆犹新,这里通过试验重现ORA-600[4000]
查询数据库obj$.con$记录

[oracle@xifenfei ~]$ sqlplus / as sysdba

SQL*Plus: Release 10.2.0.1.0 - Production on Fri Nov 4 06:32:36 2011

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

Connected to an idle instance.

SQL> startup
ORACLE instance started.

Total System Global Area  318767104 bytes
Fixed Size                  1219160 bytes
Variable Size              92276136 bytes
Database Buffers          218103808 bytes
Redo Buffers                7168000 bytes
Database mounted.
Database opened.
SQL> select OBJ#,dbms_rowid.rowid_relative_fno(rowid) rel_fno,
  2  dbms_rowid.rowid_block_number(rowid) block_num from obj$ 
  3  where name='CON$';

      OBJ#    REL_FNO  BLOCK_NUM
---------- ---------- ----------
        28          1        122

SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.

bbed修改数据块
根据催华的研究,当OBJ$中部分数据块中的csc和itl的scn都大于header scn的时候,数据库启动就会报ORA-600[4000]

[oracle@xifenfei ~]$ bbed listfile=list mode=edit password=blockedit

BBED: Release 2.0.0.0.0 - Limited Production on Fri Nov 4 06:47:09 2011

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

************* !!! For Oracle Internal Use only !!! ***************

BBED> info
 File#  Name                                                        Size(blks)
 -----  ----                                                        ----------
     1  /u01/oracle/oradata/XFF/system01.dbf                                 0
     2  /u01/oracle/oradata/XFF/undotbs01.dbf                                0
     3  /u01/oracle/oradata/XFF/sysaux01.dbf                                 0
     4  /u01/oracle/oradata/XFF/users01.dbf                                  0
     5  /u01/oracle/oradata/XFF/datfttuser.dbf                               0

BBED> set block 1     
        BLOCK#          1

BBED> set file 1 block 1
        FILE#           1
        BLOCK#          1

BBED>  p kcvfhckp.kcvcpscn
struct kcvcpscn, 8 bytes                    @484     
   ub4 kscnbas                              @484      0x00210f97
   ub2 kscnwrp                              @488      0x0000

BBED> set block 122
        BLOCK#          122

BBED> p ktbbh
struct ktbbh, 48 bytes                      @20      
   ub1 ktbbhtyp                             @20       0x01 (KDDBTDATA)
   union ktbbhsid, 4 bytes                  @24      
      ub4 ktbbhsg1                          @24       0x00000012
      ub4 ktbbhod1                          @24       0x00000012
   struct ktbbhcsc, 8 bytes                 @28         <==csc(SCN of the last block cleanout)
      ub4 kscnbas                           @28       0x0020770d
      ub2 kscnwrp                           @32       0x0000
   sb2 ktbbhict                             @36       1
   ub1 ktbbhflg                             @38       0x02 (NONE)
   ub1 ktbbhfsl                             @39       0x00
   ub4 ktbbhfnx                             @40       0x00000000
   struct ktbbhitl[0], 24 bytes             @44      
      struct ktbitxid, 8 bytes              @44      
         ub2 kxidusn                        @44       0x0005  <==回滚段序号
         ub2 kxidslt                        @46       0x0029
         ub4 kxidsqn                        @48       0x0000029a
      struct ktbituba, 8 bytes              @52      
         ub4 kubadba                        @52       0x00802381
         ub2 kubaseq                        @56       0x01f9
         ub1 kubarec                        @58       0x03
      ub2 ktbitflg                          @60       0x2001 (KTBFUPB)
      union _ktbitun, 2 bytes               @62      
         sb2 _ktbitfsc                      @62       0
         ub2 _ktbitwrp                      @62       0x0000
      ub4 ktbitbas                          @64       0x0020770e <==itl commit scn

BBED> set count 16
        COUNT           16

BBED> m /x 0d772010 offset 28
Warning: contents of previous BIFILE will be lost. Proceed? (Y/N) y
 File: /u01/oracle/oradata/XFF/system01.dbf (1)
 Block: 122              Offsets:   28 to  60           Dba:0x0040007a
------------------------------------------------------------------------
 0d772010 00000000 01000200 00000000 

 <32 bytes per line>

BBED> m /x 0e772010 offset 64
 File: /u01/oracle/oradata/XFF/system01.dbf (1)
 Block: 122              Offsets:   64 to  96           Dba:0x0040007a
------------------------------------------------------------------------
 0e772010 00016c00 ffffea00 53046903 

 <32 bytes per line>

BBED> p ktbbh
struct ktbbh, 48 bytes                      @20      
   ub1 ktbbhtyp                             @20       0x01 (KDDBTDATA)
   union ktbbhsid, 4 bytes                  @24      
      ub4 ktbbhsg1                          @24       0x00000012
      ub4 ktbbhod1                          @24       0x00000012
   struct ktbbhcsc, 8 bytes                 @28      
      ub4 kscnbas                           @28       0x1020770d
      ub2 kscnwrp                           @32       0x0000
   sb2 ktbbhict                             @36       1
   ub1 ktbbhflg                             @38       0x02 (NONE)
   ub1 ktbbhfsl                             @39       0x00
   ub4 ktbbhfnx                             @40       0x00000000
   struct ktbbhitl[0], 24 bytes             @44      
      struct ktbitxid, 8 bytes              @44      
         ub2 kxidusn                        @44       0x0005
         ub2 kxidslt                        @46       0x0029
         ub4 kxidsqn                        @48       0x0000029a
      struct ktbituba, 8 bytes              @52      
         ub4 kubadba                        @52       0x00802381
         ub2 kubaseq                        @56       0x01f9
         ub1 kubarec                        @58       0x03
      ub2 ktbitflg                          @60       0x2001 (KTBFUPB)
      union _ktbitun, 2 bytes               @62      
         sb2 _ktbitfsc                      @62       0
         ub2 _ktbitwrp                      @62       0x0000
      ub4 ktbitbas                          @64       0x1020770e

BBED> sum apply
Check value for File 1, Block 122:
current = 0xc902, required = 0xc902

启动数据库

SQL> startup
ORACLE instance started.

Total System Global Area  318767104 bytes
Fixed Size                  1219160 bytes
Variable Size              92276136 bytes
Database Buffers          218103808 bytes
Redo Buffers                7168000 bytes
Database mounted.
ORA-01092: ORACLE instance terminated. Disconnection forced

查看日志

Fri Nov  4 06:50:38 2011
Database mounted in Exclusive Mode
Completed: ALTER DATABASE   MOUNT
Fri Nov  4 06:50:38 2011
ALTER DATABASE OPEN
Fri Nov  4 06:50:38 2011
LGWR: STARTING ARCH PROCESSES
ARC0 started with pid=16, OS id=7048
Fri Nov  4 06:50:38 2011
ARC0: Archival started
ARC1: Archival started
LGWR: STARTING ARCH PROCESSES COMPLETE
ARC1 started with pid=17, OS id=7050
ARC1: STARTING ARCH PROCESSES
Fri Nov  4 06:50:38 2011
ARC0: Becoming the 'no FAL' ARCH
ARC0: Becoming the 'no SRL' ARCH
Fri Nov  4 06:50:38 2011
Thread 1 opened at log sequence 38
  Current log# 3 seq# 38 mem# 0: /u01/oracle/oradata/XFF/redo03.log
Successful open of redo thread 1
Fri Nov  4 06:50:38 2011
MTTR advisory is disabled because FAST_START_MTTR_TARGET is not set
Fri Nov  4 06:50:38 2011
SMON: enabling cache recovery
Fri Nov  4 06:50:38 2011
ARC2: Archival started
ARC1: STARTING ARCH PROCESSES COMPLETE
ARC1: Becoming the heartbeat ARCH
ARC2 started with pid=18, OS id=7052
Fri Nov  4 06:50:38 2011
Errors in file /u01/oracle/admin/XFF/udump/xff_ora_7046.trc:
ORA-00600: internal error code, arguments: [4000], [5], [], [], [], [], [], []
Fri Nov  4 06:50:40 2011
Errors in file /u01/oracle/admin/XFF/udump/xff_ora_7046.trc:
ORA-00704: bootstrap process failure
ORA-00704: bootstrap process failure
ORA-00600: internal error code, arguments: [4000], [5], [], [], [], [], [], []
Fri Nov  4 06:50:40 2011
Error 704 happened during db open, shutting down database
USER: terminating instance due to error 704
Instance terminated by USER, pid = 7046
ORA-1092 signalled during: ALTER DATABASE OPEN...

在ORACL 11.2的版本中,同样的方法无法重新该错误,数据库依然能够正常打开,所以如果要测试的朋友请选择11G以下版本进行.