Monthly Archives: 七月 2012

CURSOR_SHARING=SIMILAR引起的悲剧

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一个客户反馈说有一系统经常性负载比较高,让我帮忙分析原因
系统负载情况

[oracle@zwq-kfdialdb ~]$ top -c
top - 17:11:06 up 78 days,  1:12,  5 users,  load average: 124.83, 125.90, 112.13
Tasks: 836 total, 152 running, 684 sleeping,   0 stopped,   0 zombie
Cpu(s): 98.1%us,  0.1%sy,  0.0%ni,  1.7%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:  132070908k total, 90494280k used, 41576628k free,  1147384k buffers
Swap: 67108856k total,        0k used, 67108856k free, 79109904k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                
12179 oracle    15   0 32.5g 142m 139m R 39.0  0.1   6:09.20 oracleahdial (LOCAL=NO)
11530 oracle    16   0 32.5g 469m 466m R 36.1  0.4  11:14.23 oracleahdial (LOCAL=NO)
11816 oracle    15   0 32.5g 467m 463m R 36.1  0.4   6:33.86 oracleahdial (LOCAL=NO)
11577 oracle    15   0 32.5g 480m 477m R 34.7  0.4   7:15.98 oracleahdial (LOCAL=NO)
12136 oracle    16   0 32.5g 455m 452m R 31.9  0.4   9:07.88 oracleahdial (LOCAL=NO)
11237 oracle    16   0 32.5g 997m 992m R 31.2  0.8  20:53.50 oracleahdial (LOCAL=NO)
11427 oracle    16   0 32.5g 137m 135m R 31.2  0.1  11:50.16 oracleahdial (LOCAL=NO)
12051 oracle    16   0 32.5g 459m 456m R 31.2  0.4   6:12.67 oracleahdial (LOCAL=NO)

[oracle@zwq-kfdialdb ~]$ vmstat 3 10
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------
 r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa st
137  0      0 41566600 1147384 79109888    0    0     0     3    0    0  0  0 99  0  0
146  0      0 41567548 1147384 79109888    0    0     0    47 1058 32190 98  0  2  0  0
150  0      0 41568056 1147384 79109888    0    0     0    39 1081 31543 98  0  2  0  0
12  0      0 41568464 1147384 79109888    0    0     0    23 1056 32111 98  0  2  0  0
62  0      0 41568776 1147384 79109888    0    0     0    11 1067 31474 98  0  2  0  0
108  0      0 41568304 1147384 79109888    0    0     0    39 1059 31193 98  0  2  0  0
140  0      0 41569280 1147384 79109888    0    0     0    48 1063 31171 98  0  2  0  0
140  0      0 41569444 1147384 79109888    0    0     0    40 1075 30508 98  0  2  0  0

通过top和vmstat看出系统现在负载很高,主要都是用户进程导致.

查询等待事件

SQL> select event from v$session where wait_class#<>6;

EVENT
----------------------------------------------------------------
cursor: mutex S

SQL> /

EVENT
----------------------------------------------------------------
cursor: mutex S

SQL> /

EVENT
----------------------------------------------------------------
cursor: mutex S

SQL> /

EVENT
----------------------------------------------------------------
cursor: mutex S

SQL> SELECT a.*, s.sql_text
  2    FROM v$sql s,
  3         (SELECT sid,
  4                 event,
  5                 wait_class,
  6                 p1 cursor_hash_value,
  7                 p2raw Mutex_value,
  8                 TO_NUMBER (SUBSTR (p2raw, 1, 8), 'xxxxxxxx') hold_mutex_x_sid
  9            FROM v$session_wait
 10           WHERE event LIKE 'cursor%') a
 11   WHERE s.HASH_VALUE = a.cursor_hash_value
 12  /

no rows selected

SQL>  select event from v$session where wait_class#<>6;

EVENT
----------------------------------------------------------------
SQL*Net message to client

数据库开始的等待事件只有cursor: mutex S,等该等待事件消失后系统负载也恢复正常

再次查看系统负载

[oracle@zwq-kfdialdb ~]$ top -c -i10
top - 17:13:51 up 78 days,  1:15,  6 users,  load average: 12.57, 78.21, 96.45
Tasks: 702 total,   2 running, 700 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.5%us,  0.2%sy,  0.0%ni, 99.3%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:  132070908k total, 86477808k used, 45593100k free,  1147500k buffers
Swap: 67108856k total,        0k used, 67108856k free, 79116036k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND        
15045 oracle    16   0 13136 1476  724 R 10.6  0.0   0:00.12 top -c -i10    
10010 root      10  -5     0    0    0 D  0.0  0.0   0:00.68 [kondemand/4]  
10019 root      10  -5     0    0    0 D  0.0  0.0   1:41.58 [kondemand/13] 
10020 root      10  -5     0    0    0 D  0.0  0.0   1:52.28 [kondemand/14] 
10021 root      10  -5     0    0    0 R  0.0  0.0   2:01.54 [kondemand/15] 
12166 root      24   0 10084  300  216 D  0.0  0.0   0:00.00 /opt/VRTSgab/gablogd

[oracle@zwq-kfdialdb ~]$  vmstat 3 10
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------
 r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa st
 0  0      0 45484264 1147528 79117360    0    0     0     3    0    0  0  0 99  0  0
 2  0      0 45468452 1147528 79117456    0    0     4   161 1372 5369  2  2 97  0  0
 3  0      0 45463712 1147528 79117584    0    0     4   187 1602 7253  6  0 93  0  0
 1  0      0 45458220 1147528 79117648    0    0     1    99 1358 5821  2  0 98  0  0
 0  0      0 45475168 1147528 79117712    0    0     0    41 1321 5321  2  0 98  0  0
 0  0      0 45473624 1147528 79117744    0    0     3   104 1378 5455  2  0 98  0  0
 2  0      0 45474656 1147528 79117776    0    0     0    55 1196 4872  1  0 99  0  0
 0  0      0 45474376 1147532 79117824    0    0     8   113 1170 4990  2  0 98  0  0
 1  0      0 45475440 1147532 79117872    0    0     1    56 1187 5301  3  0 97  0  0
 1  0      0 45475824 1147532 79117888    0    0     3    99 1083 4643  3  0 97  0  0

结合上面的等待事件查询,我们可以大概评估出来,当cursor: mutex S等待消失后,系统负载也恢复正常,现在已经不存在环境,如果要找出问题只能够是借助AWR和ASH

分析ASH
Top User Events

Top SQL with Top Events

Activity Over Time

通过对ASH分析,可以大概确定,在这段时间内,引起系统负载高主要是cursor: mutex S导致

分析AWR
awr整体信息(从这里看数据库是相当的繁忙)

Load Profile(从这里看数据库业务比较小)

Top 5 Timed Foreground Events(主要等待事件cursor: mutex S,和前面分析相符)

OS LOAD(虽然和系统看到有一定出入,但是整体还是展示系统负载较高)

SQL ordered by Version Count(出现cursor: mutex S,因为load profile中解析不多,所以想到高版本问题,这里确实非常高)

通过这里的一些列分析,我们已经基本上可以确定,该数据库因为高版本问题导致cursor: mutex S以及library cache 相关等待严重,从而出现系统负载过高.

找出高版本原因
高版本相关信息和查询请见:关于High Versions Count总结

SQL> select * from table(version_rpt('f8b9tba7sfsb5')); 

COLUMN_VALUE
--------------------------------------------------------------------------------
Version Count Report Version 3.2.1 -- Today's Date 19-jul-12 18:13
RDBMS Version :11.2.0.1.0 Host: zwq-kfdialdb Instance 1 : ahdial
==================================================================
Addr: 000000080FA4CEA0  Hash_Value: 2408014181  SQL_ID f8b9tba7sfsb5
Sharable_Mem: 206315729 bytes   Parses: 48689
Stmt:
0 select count(*) as col_0_0_ from TBL_SP_SALES_RECORDS tblspsales
1 0_ where tblspsales0_.SALES_RECORDS_STATUS=:"SYS_B_0" and tblsps
2 ales0_.MOBILE_TELE_NO=:"SYS_B_1"
3


COLUMN_VALUE
--------------------------------------------------------------------------------
Versions Summary
----------------
AUTH_CHECK_MISMATCH :4
TRANSLATION_MISMATCH :4
ROLL_INVALID_MISMATCH :10219
PURGED_CURSOR :9

Total Versions:10219

Plan Hash Value Summary
-----------------------

COLUMN_VALUE
--------------------------------------------------------------------------------
Plan Hash Value Count
=============== =====
      791727930 920
     2820478500 9300

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Details for AUTH_CHECK_MISMATCH :

  # of Ver PARSING_USER_ID PARSING_SCHEMA_ID PARSING_SCHEMA_NAME
========== =============== ================= ===================
     10218               75                75 HOLLYSP

COLUMN_VALUE
--------------------------------------------------------------------------------
         2              107               107 HOLLYSP_TEST
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Details for TRANSLATION_MISMATCH :

Summary of objects probably causing TRANSLATION_MISMATCH

  Object# Owner.Object_Name
========= =================
    76737 HOLLYSP.TBL_SP_SALES_RECORDS
 HOLLYSP.TBL_SP_SALES_RECORDS
 HOLLYSP_TEST.TBL_SP_SALES_RECORDS

COLUMN_VALUE
--------------------------------------------------------------------------------
   107043 HOLLYSP_TEST.TBL_SP_SALES_RECORDS
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Details for ROLL_INVALID_MISMATCH :

No details available
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Details for PURGED_CURSOR :

No details available
####
To further debug Ask Oracle Support for the appropiate level LLL.

COLUMN_VALUE
--------------------------------------------------------------------------------
alter session set events
 'immediate trace name cursortrace address 2408014181, level LLL';
To turn it off do use address 1, level 2147483648
================================================================

59 rows selected.

SQL> select * from table(version_rpt('6zhjf3qh8gyp9'));   

COLUMN_VALUE
--------------------------------------------------------------------------------
Version Count Report Version 3.2.1 -- Today's Date 19-jul-12 18:15
RDBMS Version :11.2.0.1.0 Host: zwq-kfdialdb Instance 1 : ahdial
==================================================================
Addr: 00000007FD46D2A8  Hash_Value: 2693266089  SQL_ID 6zhjf3qh8gyp9
Sharable_Mem: 111904227 bytes   Parses: 4880
Stmt:
0 select count(*) as col_0_0_ from TBL_SP_SALES_RECORDS tblspsales
1 0_ where tblspsales0_.SALES_RECORDS_STATUS=:"SYS_B_0" and tblsps
2 ales0_.CAMPAIGN_ID=:"SYS_B_1" and tblspsales0_.IS_CONN=:"SYS_B_2
3 " and tblspsales0_.SALES_TIME>=:"SYS_B_3" and tblspsales0_.SALES
4 _PERSON=:"SYS_B_4"

COLUMN_VALUE
--------------------------------------------------------------------------------
5

Versions Summary
----------------
BIND_MISMATCH :4804
INCOMP_LTRL_MISMATCH :372
HASH_MATCH_FAILED :4936

Total Versions:4935

Plan Hash Value Summary

COLUMN_VALUE
--------------------------------------------------------------------------------
-----------------------
Plan Hash Value Count
=============== =====
     1645985080 3
     2040125427 4933

~~~~~~~~~~~~~~~~~~~~~~~~~~~
Details for BIND_MISMATCH :

Consolidated details for :
BIND_MISMATCH,USER_BIND_PEEK_MISMATCH,BIND_UACS_DIFF and

COLUMN_VALUE
--------------------------------------------------------------------------------
BIND_EQUIV_FAILURE (Mislabled as ROW_LEVEL_SEC_MISMATCH BY bug 6964441 in 11gR1)

from v$sql_bind_capture
COUNT(*) POSITION MIN(MAX_LENGTH) MAX(MAX_LENGTH) DATATYPE (PRECISION,SCALE)
======== ======== =============== =============== ======== ================
    4936        1              32              32        1 (,)
    4936        2              32              32        1 (,)
    4936        3              32              32        1 (,)
    4936        4              32              32        1 (,)
    4936        5              32              32        1 (,)


COLUMN_VALUE
--------------------------------------------------------------------------------
SUM(DECODE(column,Y, 1, 0) FROM V$SQL
IS_OBSOLETE IS_BIND_SENSITIVE IS_BIND_AWARE IS_SHAREABLE
=========== ================= ============= ============
          0              4309             0         4309
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Details for INCOMP_LTRL_MISMATCH :

No details available
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Details for HASH_MATCH_FAILED :


COLUMN_VALUE
--------------------------------------------------------------------------------
No details available
####
To further debug Ask Oracle Support for the appropiate level LLL.
alter session set events
 'immediate trace name cursortrace address 2693266089, level LLL';
To turn it off do use address 1, level 2147483648
================================================================

62 rows selected.

根据经验,出现这么多的高版本情况,很可能是cursor_sharing参数设置问题

--对应sql语句
select count(*) as col_0_0_ from TBL_SP_SALES_RECORDS tblspsales0_ 
where tblspsales0_.SALES_RECORDS_STATUS=:"SYS_B_0" and 
tblspsales0_.CAMPAIGN_ID=:"SYS_B_1" and tblspsales0_.IS_CONN=:"SYS_B_2" 
and tblspsales0_.SALES_TIME>=:"SYS_B_3" and tblspsales0_.SALES_PERSON=:"SYS_B_4"

--cursor_sharing参数
SQL> show parameter cursor_sharing;

NAME                                 TYPE                             VALUE
------------------------------------ -------------------------------- ----------------
cursor_sharing                       string                           SIMILAR

根据oracle官方建议在11g中不推荐使用cursor_sharing=SIMILAR,其实在所有版本中都不推荐,设置为该值很容易导致高版本问题.而且该值会出现莫名其妙的,无法解释的高版本问题.而且根据oracle相关文档,在即将发布的12c版本中,将除掉SIMILAR值.对于客户库的该问题,因为很多sql未绑定参数,为了减少硬解析,建议在业务低谷时设置cursor_sharing=FORCE,并刷新shared pool.

ALERT_QUE表重建方法

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最近关注了下网络上,出现了很多AQ$_ALERT_QT_N的index SYS_IOT_TOP_NNNN坏块引起的数据库异常(主要是SYSAUX表空间),因为他们是IOT表和主键的关系,不能简单的rebuild.查询了一些资料,得到一些信息

ALERT_QUE表用途
The ALERT_QUE is used by the Grid Control and DB Control Management Agents to monitor server-generated alerts

ALERT_QUE表重建方法

--方法1
SQL> connect / as sysdba

SQL>alter system enable restricted session;

To drop server alert schema.

SQL>@$ORACLE_HOME/rdbms/admin/catnoalr.sql

To re-create tables, sequence, type and queue for server alert

SQL>@$ORACLE_HOME/rdbms/admin/dbmsslrt.sql
SQL>@$ORACLE_HOME/rdbms/admin/catalrt.sql

To recompile the invalid objects

SQL>@$ORACLE_HOME/rdbms/admin/utlrp.sql

SQL> alter system disable restricted session; 
 

--方法2
SQL> connect / as sysdba

SQL>alter system enable restricted session;

To drop server alert schema.

SQL>@$ORACLE_HOME/rdbms/admin/catnoalr.sql

Rerun catproc.sql

SQL>@$ORACLE_HOME/rdbms/admin/catproc.sql

SQL> alter system disable restricted session;

补充说明

By running the script up, the queue tables will be recreated and the messages 
in the queue will be lost.

For 11g you can use catmwin.sql which has the steps to recreate the ALERT_QT. 
Alternatively, for 11g you can use the catproc.sql to recreate.  

If this option may leave DBSNMP.MGMT_BSLN_INTERNAL invalid. 
To validate the same run catsnmp.sql [NOTE:603289.1]

客户端版本导致ORA-00600[kssadd_stage: null parent]

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有客户一台应用不能正常工作,报ORA-00600[kssadd_stage: null parent]错误，重启中间件后工作正常.
alert日志

ORA-00600: internal error code, arguments: [kssadd_stage: null parent], [], [], [], [], [], [], []
Tue Jul 17 14:57:37 2012
Trace dumping is performing id=[cdmp_20120717145742]
Tue Jul 17 14:57:39 2012
Errors in file /oracle/10g/admin/fdjdb/udump/fdjdb2_ora_307720.trc:
ORA-00600: internal error code, arguments: [kssadd_stage: null parent], [], [], [], [], [], [], []
Tue Jul 17 14:57:45 2012
Errors in file /oracle/10g/admin/fdjdb/udump/fdjdb2_ora_357344.trc:
ORA-00600: internal error code, arguments: [kssadd_stage: null parent], [], [], [], [], [], [], []

trace文件

Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, OLAP, Data Mining
and Real Application Testing options
ORACLE_HOME = /oracle/10g/db
System name:    AIX
Node name:      ora2
Release:        1
Version:        6
Machine:        00CCFD354C00
Instance name: fdjdb2
Redo thread mounted by this instance: 2
Oracle process number: 89
Unix process pid: 111068, image: oracle@ora2

*** ACTION NAME:() 2012-07-17 15:08:42.043
*** MODULE NAME:(gsrvr.exe) 2012-07-17 15:08:42.043
*** SERVICE NAME:(fdjdb) 2012-07-17 15:08:42.043
*** SESSION ID:(991.44140) 2012-07-17 15:08:42.043
*** 2012-07-17 15:08:42.043
ksedmp: internal or fatal error
ORA-00600: internal error code, arguments: [kssadd_stage: null parent], [], [], [], [], [], [], []
No current SQL statement being executed.
----- Call Stack Trace -----
calling              call     entry                argument values in hex
location             type     point                (? means dubious value)
-------------------- -------- -------------------- ----------------------------
ksedst+001c          bl       ksedst1              40D1A9663F9E7ABB ?
                                                   6ED89E14D59386B5 ?
ksedmp+0290          bl       ksedst               104A2CDB0 ?
ksfdmp+0018          bl       03F2735C
kgerinv+00dc         bl       _ptrgl
kgeasnmierr+004c     bl       kgerinv              11041D938 ? 700000220FFBFC8 ?
                                                   110000770 ? 7000004FDF0C700 ?
                                                   FFFFFFFFFFF89C0 ?
kssadd_stage+0080    bl       kgeasnmierr          110195490 ? 110450040 ?
                                                   104AC46B8 ? 000000000 ?
                                                   000000000 ? 000000000 ?
                                                   000000000 ? 7000004F0FA9208 ?
kqreqa+0058          bl       kssadd_stage         105670038 ? 104CF7BA0 ?
                                                   000000000 ? 000000000 ?
kqrpre1+0850         bl       kqreqa               100203514 ? 1101A2B20 ?
kqrpre+001c          bl       kqrpre1              710000770 ? 000000009 ?
                                                   FFFFFFFFFFF9088 ?
                                                   28A4202200000000 ?
                                                   10012AEE4 ? FFFFFFFFFFF9080 ?
                                                   000000000 ? 11022A3E0 ?
opiosq0+009c         bl       kqrpre               000000000 ? 000000000 ?
                                                   000000000 ? 1101A2B20 ?
                                                   FFFFFFFFFFF9198 ? 1104B7C60 ?
                                                   FFFFFFFFFFF9458 ?
kpooprx+0168         bl       opiosq0              4A00000001 ? 000000001 ?
                                                   000000000 ? A40000000000FF ?
kpoal8+0400          bl       kpooprx              FFFFFFFFFFFB964 ?
                                                   FFFFFFFFFFFB680 ?
                                                   5000000050 ? 100000001 ?
                                                   000000000 ? A40000000000A4 ?
                                                   000000000 ? 1103A1AD8 ?
opiodr+0ae0          bl       _ptrgl
ttcpip+1020          bl       _ptrgl
opitsk+1124          bl       01F971E8
opiino+0990          bl       opitsk               000000000 ? 000000000 ?
opiodr+0ae0          bl       _ptrgl
opidrv+0484          bl       01F96034
sou2o+0090           bl       opidrv               3C02D9A29C ? 4A006E298 ?
                                                   FFFFFFFFFFFF8A0 ?
opimai_real+01bc     bl       01F939B4
main+0098            bl       opimai_real          000000000 ? 000000000 ?
__start+0070         bl       main                 000000000 ? 000000000 ?

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

咨询客户得知访问该数据库的是通过中间件(OCI)+10g Release 1 (10.1) for Windows访问数据库,然后查询MOS[ID 752149.1]发现stack trace
kssadd_stage <- kqreqa <- kqrpre1 <- kqrpre <- opiosq0 <- kpooprx <- kpoal8 <- opiodr <- ttcpip <- opitsk <- opiino <- opiodr <- opidrv <- sou2o <- opimai_real <- main <- start 和客户端版本和访问环境都和unpublished Bug 4937225相似
处理建议
客户端升级到10.2.0.3或者更高版本

8i升级到9i出现ORA-07445[pevm_MOVC_i()+18]

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一个朋友数据库从8i升级到9i后,出现ORA-07445[pevm_MOVC_i()+18]错误
alert日志ORA-07445[pevm_MOVC_i()+18]

Mon Jul 16 12:21:54 2012
Errors in file /oracle/admin/ora8/udump/ora8_ora_8938.trc:
ORA-07445: exception encountered: core dump [pevm_MOVC_i()+18] [SIGSEGV] [Address not mapped to object] [0x7] [] []

trace文件

--版本平台信息
Oracle9i Enterprise Edition Release 9.2.0.4.0 - Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.4.0 - Production
ORACLE_HOME = /oracle/product/9.2.0
System name:	Linux
Node name:	localhost.localdomain
Release:	2.6.18-194.el5PAE
Version:	#1 SMP Tue Mar 16 22:00:21 EDT 2010
Machine:	i686
Instance name: ora8
Redo thread mounted by this instance: 1
Oracle process number: 15
Unix process pid: 8938, image: oracle@localhost.localdomain (TNS V1-V3)

--trace信息
*** 2012-07-16 12:21:54.399
*** SESSION ID:(12.6) 2012-07-16 12:21:54.399
Exception signal: 11 (SIGSEGV), code: 1 (Address not mapped to object), addr: 0x7, PC: [0x9bfac06, pevm_MOVC_i()+18]
Registers:
%eax: 0x00000000 %ebx: 0x00000025 %ecx: 0x00000000
%edx: 0xbf93bf50 %edi: 0x00000000 %esi: 0x002ff1d8
%esp: 0xbf93bc28 %ebp: 0xbf93bc60 %eip: 0x09bfac06
%efl: 0x00010296
  pevm_MOVC_i()+6 (0x9bfabfa) mov %edi,0xffffffcc(%ebp)
  pevm_MOVC_i()+9 (0x9bfabfd) mov %esi,0xffffffd0(%ebp)
  pevm_MOVC_i()+12 (0x9bfac00) mov %ebx,0xffffffc8(%ebp)
  pevm_MOVC_i()+15 (0x9bfac03) mov 0x14(%ebp),%eax
> pevm_MOVC_i()+18 (0x9bfac06) movb 0x7(%eax),%dl
  pevm_MOVC_i()+21 (0x9bfac09) mov $0x0,0xfffffff0(%ebp)
  pevm_MOVC_i()+28 (0x9bfac10) movb %dl,0xffffffe0(%ebp)
  pevm_MOVC_i()+31 (0x9bfac13) movb %dl,0xffffffe0(%ebp)
  pevm_MOVC_i()+34 (0x9bfac16) cmpb $0x1,%dl
*** 2012-07-16 12:21:54.407
ksedmp: internal or fatal error
ORA-07445: exception encountered: core dump [pevm_MOVC_i()+18] [SIGSEGV] [Address not mapped to object] [0x7] [] []
----- Call Stack Trace -----
calling              call     entry                argument values in hex      
location             type     point                (? means dubious value)     
-------------------- -------- -------------------- ----------------------------
ksedmp()+269         call     ksedst()+0           1 ? 0 ? 0 ? 1 ? 64252C31 ?
                                                   6666006C ?
ssexhd()+1108        call     ksedmp()+0           3 ? 0 ? 0 ? 0 ? 0 ? 0 ?
pevm_MOVC_i()+18     signal   ssexhd()+0           B ? BF93B8BC ? BF93B93C ?
pfrrun()+8458        call     pevm_MOVC_i()+0      2FF19C ? 16 ? BE14650 ? 0 ?
pricar()+1277        call     pfrrun()+0           2FF19C ? 1 ? BF93CCFC ?
                                                   AD638A0 ? 2DFBAC ? 0 ?
pricbr()+427         call     pricar()+0           BF93DA88 ? BF93D084 ?
                                                   9BEAE0C ? 1 ? 0 ? 98C93728 ?
prient2()+598        call     pricbr()+0           BF93DA88 ? BF93D084 ? 0 ?
prient()+1438        call     prient2()+0          BF93DA88 ? BF93D084 ? 1 ?
                                                   BF93E4E0 ? 0 ?
kkxrpc()+347         call     prient()+0           BF93DA88 ? AD638A0 ?
                                                   BF93E534 ? 38 ? 1C8C997 ? 0 ?
kporpc()+138         call     kkxrpc()+0           4C ? F ? BF93E63C ?
opiodr()+5238        call     kjushutdown()+2671   4C ? F ? BF93E63C ?
ttcpip()+2124        call     opiodr()+0           4C ? F ? BF93E63C ? 0 ?
Cannot find symbol in /lib/libc.so.6.
opitsk()+1635        call     ttcpip()+0           AD638A0 ? 4C ? BF93E63C ? 0 ?
                                                   BF93EF14 ? BF93EF10 ?
opiino()+602         call     opitsk()+0           0 ? 0 ? AD638A0 ? BE01DE0 ?
                                                   103 ? 0 ?
opiodr()+5238        call     kjushutdown()+2671   3C ? 4 ? BF9402E0 ?
opidrv()+517         call     opiodr()+0           3C ? 4 ? BF9402E0 ? 0 ?
sou2o()+25           call     opidrv()+0           3C ? 4 ? BF9402E0 ?
main()+182           call     sou2o()+0            BF9402C4 ? 3C ? 4 ?
                                                   BF9402E0 ? 0 ? 0 ?
00125E9C             call     main()+0             2 ? BF940384 ? BF940390 ?
                                                   88A810 ? 0 ? 1 ?
 
---------------------Binary Stack Dump ---------------------

--进程信息
Process global information:
     process: 0x962ba0b8, call: 0x96342cd8, xact: (nil), curses: 0x962e4070, usrses: 0x962e4070
  ----------------------------------------
  SO: 0x962ba0b8, type: 2, owner: (nil), flag: INIT/-/-/0x00
  (process) Oracle pid=15, calls cur/top: 0x96342cd8/0x96342cd8, flag: (0) -
            int error: 0, call error: 0, sess error: 0, txn error 0
  (post info) last post received: 196 0 4
              last post received-location: kslpsr
              last process to post me: 962b7828 1 6
              last post sent: 0 0 15
              last post sent-location: ksasnd
              last process posted by me: 962b7828 1 6
    (latch info) wait_event=0 bits=0
    Process Group: DEFAULT, pseudo proc: 0x962d9444
    O/S info: user: oracle, term: UNKNOWN, ospid: 8938
    OSD pid info: Unix process pid: 8938, image: oracle@localhost.localdomain (TNS V1-V3)
    ----------------------------------------
    SO: 0x962e4070, type: 4, owner: 0x962ba0b8, flag: INIT/-/-/0x00
    (session) trans: (nil), creator: 0x962ba0b8, flag: (8000041) USR/- BSY/-/-/-/-/-
              DID: 0001-000F-00000004, short-term DID: 0000-0000-00000000
              txn branch: (nil)
              oct: 0, prv: 0, sql: (nil), psql: 0x98c3b858, user: 95/DDDD
    O/S info: user: mis, term: LANDERSVR3, ospid: 7904:3012, machine: XANDER\LANDERSVR3
              program: c:\orant\bin\f50run32.exe c:\forms\bas9010.fmx
    application name: c:\orant\bin\f50run32.exe c:\forms\bas9010.fmx, hash value=0
    last wait for 'db file sequential read' blocking sess=0x0 seq=1277 wait_time=11
                file#=1, block#=21b, blocks=1

1.该用户程序是从8i升级到9i之后产生该错误
2.报错的访问程序是FORM 5

解决方案
查询MOS[ID 273411.1]发现是因为FORM 5和9i不兼容导致该错误,ORACLE未给出解决方案,言外之意,如果FORM不能升级,那就只能把ORACLE重新降级到8i.

温馨提示
在做oracle数据库升级前,需要实现进行评估,测试,如果是oracle相关软件和oracle数据库结合紧密,升级前最好需要和ORACLE技术人员确认是否兼容.

using backup controlfile 两种使用情况区别

Posted on by

使用备份控制文件和重建控制文件恢复,都需要使用到using backup controlfile命令,但是两种情况下却有着本质的区别
试验准备条件

SQL> select * from v$version;

BANNER
-------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - Production
PL/SQL Release 11.2.0.3.0 - Production
CORE    11.2.0.3.0      Production
TNS for Linux: Version 11.2.0.3.0 - Production
NLSRTL Version 11.2.0.3.0 - Production

SQL> select to_char(sysdate,'yyyy-mm-dd')"www.orasos.com" from dual;

www.orasos.com
--------------------
2012-07-13

SQL> alter database open resetlogs;

Database altered.

SQL> select name from v$controlfile;

NAME
----------------------------------------------------
/u01/oracle/oradata/ora11g/control01.ctl

SQL> !cp /u01/oracle/oradata/ora11g/control01.ctl /tmp/xff.ctl

SQL> alter system checkpoint;

System altered.

SQL> /

System altered.

SQL> /

System altered.

SQL> alter system switch logfile;     

System altered.

SQL> /

System altered.

SQL> /

System altered.

SQL> /

System altered.

SQL> alter system checkpoint;

System altered.

SQL> shutdown abort;    
ORACLE instance shut down.
SQL> !rm /u01/oracle/oradata/ora11g/control01.ctl

SQL> ! cp /tmp/xff.ctl /u01/oracle/oradata/ora11g/control01.ctl

SQL> startup
ORACLE instance started.

Total System Global Area  523108352 bytes
Fixed Size                  1346052 bytes
Variable Size             432014844 bytes
Database Buffers           83886080 bytes
Redo Buffers                5861376 bytes
Database mounted.
ORA-01122: database file 1 failed verification check
ORA-01110: data file 1: '/u01/oracle/oradata/ora11g/system01.dbf'
ORA-01207: file is more recent than control file - old control file

相关说明：
1.通过resetlogs使得试验更加清晰
2.通过多次的checkpoint实现增加scn,switch logfile实现日志组切换
3.通过模拟备份控制文件恢复

查询相关SCN

SQL> set linesize 150
SQL> select file#,to_char(checkpoint_change#,'9999999999999999') "SCN",
  2  to_char(RESETLOGS_CHANGE#,'9999999999999999') "RESETLOGS SCN",FUZZY
  3  from v$datafile_header;

     FILE# SCN                                RESETLOGS SCN                      FUZZY
---------- ---------------------------------- ---------------------------------- ------
         1           2118981                            2118577                  YES
         2           2118981                            2118577                  YES
         3           2118981                            2118577                  YES
         4           2118981                            2118577                  YES
         6           2118981                            2118577                  YES

SQL> select file#,to_char(checkpoint_change#,'999999999999999') "SCN",
  2  to_char(last_change#,'999999999999999')"STOP_SCN" from v$datafile;

     FILE# SCN                              STOP_SCN
---------- -------------------------------- --------------------------------
         1          2118580
         2          2118580
         3          2118580
         4          2118580
         6          2118580

SQL> select CONTROLFILE_CHANGE#   from v$database;

CONTROLFILE_CHANGE#
-------------------
            2118713

做关于控制文件和数据文件dump

SQL> oradebug setmypid;
Statement processed.
SQL> oradebug dump file_hdrs 3;
Statement processed.
SQL> oradebug tracefile_name;
/u01/oracle/diag/rdbms/ora11g/ora11g/trace/ora11g_ora_593.trc
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[oracle@xifenfei ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.3.0 Production on Fri Jul 13 03:05:48 2012

Copyright (c) 1982, 2011, Oracle.  All rights reserved.


Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> oradebug setmypid;
Statement processed.
SQL>  oradebug dump controlf 3;
Statement processed.
SQL> oradebug tracefile_name;
/u01/oracle/diag/rdbms/ora11g/ora11g/trace/ora11g_ora_775.trc

分析file_hdrs 3 dump文件

--datafile 1的datafile header信息
Tablespace #0 - SYSTEM  rel_fn:1 
Creation   at   scn: 0x0000.00000007 09/18/2011 17:33:47
Backup taken at scn: 0x0000.00000000 01/01/1988 00:00:00 thread:0
 reset logs count:0x2eff82e3 scn: 0x0000.002053b1
 prev reset logs count:0x2e9e8451 scn: 0x0000.0016eaab
 recovered at 07/13/2012 02:56:18
 status:0x2004 root dba:0x00400208 chkpt cnt: 760 ctl cnt:759
begin-hot-backup file size: 0
Checkpointed at scn:  0x0000.00205545 07/13/2012 03:01:42

--datafile 1的控制文件中信息
DATA FILE #1: 
  name #7: /u01/oracle/oradata/ora11g/system01.dbf
creation size=0 block size=8192 status=0xe head=7 tail=7 dup=1
 tablespace 0, index=1 krfil=1 prev_file=0
 unrecoverable scn: 0x0000.00000000 01/01/1988 00:00:00
 Checkpoint cnt:752 scn: 0x0000.002053b4 07/13/2012 02:59:18
 Stop scn: 0xffff.ffffffff 07/13/2012 02:58:43
 Creation Checkpointed at scn:  0x0000.00000007 09/18/2011 17:33:47

通过这里可以看出来:
datafile header的Checkpointed scn(00205545)>controfile datafile的Checkpoint scn(002053b4)
datafile header的checkpiont count(760)>controfile datafile的checkpiont count(752)
所以在数据库open的时候会报ORA-01207错误

尝试恢复数据库

SQL> recover database using backup controlfile;
ORA-00279: change 2118713 generated at 07/13/2012 02:58:43 needed for thread 1
ORA-00289: suggestion : /u01/oracle/oradata/archivelog/ora11g/1_1_788497123.dbf
ORA-00280: change 2118713 for thread 1 is in sequence #1


Specify log: {<RET>=suggested | filename | AUTO | CANCEL}

ORA-00308: cannot open archived log
'/u01/oracle/oradata/archivelog/ora11g/1_1_788497123.dbf'
ORA-27037: unable to obtain file status
Linux Error: 2: No such file or directory
Additional information: 3


SQL> 
SQL> select to_char(2118713,'xxxxxxx') from dual;

TO_CHAR(2118713,
----------------
  205439

分析controlf 3 dump文件

***************************************************************************
DATABASE ENTRY
***************************************************************************
 (size = 316, compat size = 316, section max = 1, section in-use = 1,
  last-recid= 0, old-recno = 0, last-recno = 0)
 (extent = 1, blkno = 1, numrecs = 1)
 03/12/2012 22:17:06
 DB Name "ORA11G"
 Database flags = 0x00404000 0x00001000
 Controlfile Creation Timestamp  03/12/2012 22:17:07
 Incmplt recovery scn: 0x0000.00000000
 Resetlogs scn: 0x0000.002053b1 Resetlogs Timestamp  07/13/2012 02:58:43
 Prior resetlogs scn: 0x0000.0016eaab Prior resetlogs Timestamp  05/01/2012 13:14:57
 Redo Version: compatible=0xb200000
 #Data files = 5, #Online files = 5
 Database checkpoint: Thread=1 scn: 0x0000.002053b4
 Threads: #Enabled=1, #Open=1, Head=1, Tail=1
 Max log members = 3, Max data members = 1
 Arch list: Head=0, Tail=0, Force scn: 0x0000.00000000scn: 0x0000.00000000
 Activation ID: 4184707968
 Controlfile Checkpointed at scn:  0x0000.00205439 07/13/2012 02:59:25 <==控制文件checkpiont,控制文件每3秒的一次checkpiont
 thread:0 rba:(0x0.0.0)

通过recover的提示和对于controlf 3 dump文件的分析,可以确定数据库使用备份控制文件恢复,需要改控制文件备份之时开始的所有归档日志

查询数据库当前redo情况

SQL> select member from v$logfile;

MEMBER
-------------------------------------------------------------
/u01/oracle/oradata/ora11g/redo03.log
/u01/oracle/oradata/ora11g/redo02.log
/u01/oracle/oradata/ora11g/redo01.log

SQL> select SEQUENCE#,STATUS,FIRST_CHANGE# ,NEXT_CHANGE# from v$log; 

 SEQUENCE# STATUS                           FIRST_CHANGE# NEXT_CHANGE#
---------- -------------------------------- ------------- ------------
         1 CURRENT                                2118577   2.8147E+14
         0 UNUSED                                       0            0
         0 UNUSED                                       0            0

SQL> archive log list;
Database log mode              No Archive Mode
Automatic archival             Disabled
Archive destination            /u01/oracle/oradata/archivelog/ora11g
Oldest online log sequence     1
Current log sequence           1

SQL> alter system dump logfile '/u01/oracle/oradata/ora11g/redo03.log';

System altered.

SQL> alter system dump logfile '/u01/oracle/oradata/ora11g/redo02.log';

System altered.

SQL> alter system dump logfile '/u01/oracle/oradata/ora11g/redo01.log';

System altered.

因为数据库处于非归档模式,而得到的redo信息主要都是来自控制文件,所以只能通过dump redo来分析当前redo的情况

分析redo log dump

DUMP OF REDO FROM FILE '/u01/oracle/oradata/ora11g/redo03.log'
 Opcodes *.*
 RBAs: 0x000000.00000000.0000 thru 0xffffffff.ffffffff.ffff
 SCNs: scn: 0x0000.00000000 thru scn: 0xffff.ffffffff
 Times: creation thru eternity
 FILE HEADER:
	Compatibility Vsn = 186646528=0xb200000
	Db ID=4173966754=0xf8c9ada2, Db Name='ORA11G'
	Activation ID=4184707968=0xf96d9380
	Control Seq=7660=0x1dec, File size=30720=0x7800
	File Number=3, Blksiz=512, File Type=2 LOG
 descrip:"Thread 0001, Seq# 0000000003, SCN 0x00000020553d-0x000000205540"
 thread: 1 nab: 0x2 seq: 0x00000003 hws: 0x2 eot: 0 dis: 0
 resetlogs count: 0x2eff82e3 scn: 0x0000.002053b1 (2118577)
 prev resetlogs count: 0x2e9e8451 scn: 0x0000.0016eaab (1501867)
 Low  scn: 0x0000.0020553d (2118973) 07/13/2012 03:01:34
 Next scn: 0x0000.00205540 (2118976) 07/13/2012 03:01:35
 Enabled scn: 0x0000.002053b1 (2118577) 07/13/2012 02:58:43
 Thread closed scn: 0x0000.0020553d (2118973) 07/13/2012 03:01:34
 Disk cksum: 0xa716 Calc cksum: 0xa716


DUMP OF REDO FROM FILE '/u01/oracle/oradata/ora11g/redo02.log'
 Opcodes *.*
 RBAs: 0x000000.00000000.0000 thru 0xffffffff.ffffffff.ffff
 SCNs: scn: 0x0000.00000000 thru scn: 0xffff.ffffffff
 Times: creation thru eternity
 FILE HEADER:
	Compatibility Vsn = 186646528=0xb200000
	Db ID=4173966754=0xf8c9ada2, Db Name='ORA11G'
	Activation ID=4184707968=0xf96d9380
	Control Seq=7663=0x1def, File size=30720=0x7800
	File Number=2, Blksiz=512, File Type=2 LOG
 descrip:"Thread 0001, Seq# 0000000005, SCN 0x000000205543-0xffffffffffff"
 thread: 1 nab: 0xffffffff seq: 0x00000005 hws: 0x1 eot: 1 dis: 0
 resetlogs count: 0x2eff82e3 scn: 0x0000.002053b1 (2118577)
 prev resetlogs count: 0x2e9e8451 scn: 0x0000.0016eaab (1501867)
 Low  scn: 0x0000.00205543 (2118979) 07/13/2012 03:01:36
 Next scn: 0xffff.ffffffff 01/01/1988 00:00:00
 Enabled scn: 0x0000.002053b1 (2118577) 07/13/2012 02:58:43
 Thread closed scn: 0x0000.00205543 (2118979) 07/13/2012 03:01:36
 Disk cksum: 0xc3f9 Calc cksum: 0xc3f9
 Terminal recovery stop scn: 0x0000.00000000
 Terminal recovery  01/01/1988 00:00:00
 Most recent redo scn: 0x0000.00000000


DUMP OF REDO FROM FILE '/u01/oracle/oradata/ora11g/redo01.log'
 Opcodes *.*
 RBAs: 0x000000.00000000.0000 thru 0xffffffff.ffffffff.ffff
 SCNs: scn: 0x0000.00000000 thru scn: 0xffff.ffffffff
 Times: creation thru eternity
 FILE HEADER:
	Compatibility Vsn = 186646528=0xb200000
	Db ID=4173966754=0xf8c9ada2, Db Name='ORA11G'
	Activation ID=4184707968=0xf96d9380
	Control Seq=7663=0x1def, File size=30720=0x7800
	File Number=1, Blksiz=512, File Type=2 LOG
 descrip:"Thread 0001, Seq# 0000000004, SCN 0x000000205540-0x000000205543"
 thread: 1 nab: 0x2 seq: 0x00000004 hws: 0x2 eot: 0 dis: 0
 resetlogs count: 0x2eff82e3 scn: 0x0000.002053b1 (2118577)
 prev resetlogs count: 0x2e9e8451 scn: 0x0000.0016eaab (1501867)
 Low  scn: 0x0000.00205540 (2118976) 07/13/2012 03:01:35
 Next scn: 0x0000.00205543 (2118979) 07/13/2012 03:01:36
 Enabled scn: 0x0000.002053b1 (2118577) 07/13/2012 02:58:43
 Thread closed scn: 0x0000.00205540 (2118976) 07/13/2012 03:01:35
 Disk cksum: 0xaa26 Calc cksum: 0xaa26
 Terminal recovery stop scn: 0x0000.00000000
 Terminal recovery  01/01/1988 00:00:00
 Most recent redo scn: 0x0000.00000000

通过对redo dump的分析可以得到：
1.最小的sequence#=3是redo03.log
2.current redo为redo02.log

继续尝试恢复

SQL> recover database using backup controlfile;
ORA-00279: change 2118713 generated at 07/13/2012 02:58:43 needed for thread 1
ORA-00289: suggestion : /u01/oracle/oradata/archivelog/ora11g/1_1_788497123.dbf
ORA-00280: change 2118713 for thread 1 is in sequence #1


Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
/u01/oracle/oradata/ora11g/redo02.log
ORA-00326: log begins at change 2118979, need earlier change 2118713
ORA-00334: archived log: '/u01/oracle/oradata/ora11g/redo02.log'

关于重建控制文件后使用using backup controlfile总结:恢复的启动控制文件备份的scn,需要该控制文件备份后的所有归档日志.对于当前这个非归档,而且redo被覆盖的库,该方法无法正常恢复

重建控制文件并做controlf 3 dump

SQL> alter database backup controlfile to trace as '/tmp/ctl.trace';

Database altered.

SQL> shutdown immediate
ORA-01109: database not open


Database dismounted.
ORACLE instance shut down.
SQL> STARTUP NOMOUNT
CREATE CONTROLFILE REUSE DATABASE "ORA11G" NORESETLOGS  NOARCHIVELOG
    MAXLOGFILES 16
    MAXLOGMEMBERS 3
    MAXDATAFILES 100
    MAXINSTANCES 8
    MAXLOGHISTORY 292
LOGFILE
  GROUP 1 '/u01/oracle/oradata/ora11g/redo01.log'  SIZE 15M BLOCKSIZE 512,
  GROUP 2 '/u01/oracle/oradata/ora11g/redo02.log'  SIZE 15M BLOCKSIZE 512,
  GROUP 3 '/u01/oracle/oradata/ora11g/redo03.log'  SIZE 15M BLOCKSIZE 512
DATAFILE
  '/u01/oracle/oradata/ora11g/system01.dbf',
  '/u01/oracle/oradata/ora11g/sysaux01.dbf',
  '/u01/oracle/oradata/ora11g/undotbs01.dbf',
  '/u01/oracle/oradata/ora11g/users01.dbf',
  '/u01/oracle/oradata/ora11g/xifenfei02.dbf'
CHARACTER SET AL32UTF8
;
ORACLE instance started.

Total System Global Area  523108352 bytes
Fixed Size                  1346052 bytes
Variable Size             432014844 bytes
Database Buffers           83886080 bytes
Redo Buffers                5861376 bytes
SQL>   2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18  
Control file created.

SQL> oradebug setmypid;
Statement processed.
SQL> oradebug dump controlf 3;
Statement processed.
SQL> oradebug tracefile_name;
/u01/oracle/diag/rdbms/ora11g/ora11g/trace/ora11g_ora_1867.trc

尝试数据库恢复

SQL>  recover database using backup controlfile;
ORA-00279: change 2118981 generated at 07/13/2012 03:01:42 needed for thread 1
ORA-00289: suggestion : /u01/oracle/oradata/archivelog/ora11g/1_5_788497123.dbf
ORA-00280: change 2118981 for thread 1 is in sequence #5


Specify log: {<RET>=suggested | filename | AUTO | CANCEL}

ORA-00308: cannot open archived log
'/u01/oracle/oradata/archivelog/ora11g/1_5_788497123.dbf'
ORA-27037: unable to obtain file status
Linux Error: 2: No such file or directory
Additional information: 3


SQL> 
SQL> select to_char(2118981,'xxxxxxx') from dual;

TO_CHAR(2118981,
----------------
  205545

SQL> set linesize 150
SQL> select file#,to_char(checkpoint_change#,'9999999999999999') "SCN",
  2  to_char(RESETLOGS_CHANGE#,'9999999999999999') "RESETLOGS SCN",FUZZY
  3  from v$datafile_header;

     FILE# SCN                                RESETLOGS SCN                      FUZZY
---------- ---------------------------------- ---------------------------------- ------
         1           2118981                            2118577                  YES
         2           2118981                            2118577                  YES
         3           2118981                            2118577                  YES
         4           2118981                            2118577                  YES
         6           2118981                            2118577                  YES

SQL> select file#,to_char(checkpoint_change#,'999999999999999') "SCN",
  2  to_char(last_change#,'999999999999999')"STOP_SCN" from v$datafile;

     FILE# SCN                              STOP_SCN
---------- -------------------------------- --------------------------------
         1          2118981
         2          2118981
         3          2118981
         4          2118981
         6          2118981

分析 controlf 3 dump文件

***************************************************************************
DATABASE ENTRY
***************************************************************************
 (size = 316, compat size = 316, section max = 1, section in-use = 1,
  last-recid= 0, old-recno = 0, last-recno = 0)
 (extent = 1, blkno = 1, numrecs = 1)
 07/13/2012 03:24:51
 DB Name "ORA11G"
 Database flags = 0x00400102 0x00001000
 Controlfile Creation Timestamp  07/13/2012 03:24:51
 Incmplt recovery scn: 0x0000.00000000
 Resetlogs scn: 0x0000.002053b1 Resetlogs Timestamp  07/13/2012 02:58:43
 Prior resetlogs scn: 0x0000.0016eaab Prior resetlogs Timestamp  05/01/2012 13:14:57
 Redo Version: compatible=0xb200000
 #Data files = 5, #Online files = 5
 Database checkpoint: Thread=1 scn: 0x0000.00205543   

***************************************************************************
DATA FILE RECORDS
***************************************************************************
 (size = 520, compat size = 520, section max = 100, section in-use = 6,
  last-recid= 0, old-recno = 0, last-recno = 0)
 (extent = 1, blkno = 11, numrecs = 100)
DATA FILE #1: 
  name #8: /u01/oracle/oradata/ora11g/system01.dbf
creation size=0 block size=8192 status=0x12 head=8 tail=8 dup=1
 tablespace 0, index=1 krfil=1 prev_file=0
 unrecoverable scn: 0x0000.00000000 01/01/1988 00:00:00
 Checkpoint cnt:760 scn: 0x0000.00205545 07/13/2012 03:01:42
 Stop scn: 0xffff.ffffffff 07/13/2012 03:24:51
 Creation Checkpointed at scn:  0x0000.00000007 09/18/2011 17:33:47

完成恢复

SQL> recover database using backup controlfile;
ORA-00279: change 2118981 generated at 07/13/2012 03:01:42 needed for thread 1
ORA-00289: suggestion : /u01/oracle/oradata/archivelog/ora11g/1_5_788497123.dbf
ORA-00280: change 2118981 for thread 1 is in sequence #5


Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
/u01/oracle/oradata/ora11g/redo02.log
Log applied.
Media recovery complete.

关于重建控制文件后使用using backup总结:重建控制文件后,恢复的起点是datafile header scn 最小值,需要改scn之后的所有日志