数据库启动ORA-08103故障恢复

Posted on 2014 年 07 月 21 日 by 惜分飞

数据库在open过程报ORA-08103错误导致数据库无法正确启动

Fri Jul 18 22:02:51 2014
SMON: enabling tx recovery
Fri Jul 18 22:02:51 2014
Errors in file d:\oracle\product\10.2.0\admin\kemu3\udump\kemu3_ora_29788.trc:
ORA-00604: ?? SQL ?? 1 ????
ORA-08103: ??????

Fri Jul 18 22:02:51 2014
Database Characterset is ZHS16GBK
Fri Jul 18 22:02:51 2014
Errors in file d:\oracle\product\10.2.0\admin\kemu3\bdump\kemu3_smon_29704.trc:
ORA-00604: error occurred at recursive SQL level 1
ORA-08103: object no longer exists

Fri Jul 18 22:02:51 2014
Errors in file d:\oracle\product\10.2.0\admin\kemu3\bdump\kemu3_smon_29704.trc:
ORA-00604: error occurred at recursive SQL level 1
ORA-08103: object no longer exists

Fri Jul 18 22:02:51 2014
Errors in file d:\oracle\product\10.2.0\admin\kemu3\bdump\kemu3_smon_29704.trc:
ORA-00604: error occurred at recursive SQL level 1
ORA-08103: object no longer exists

Fri Jul 18 22:02:52 2014
Errors in file d:\oracle\product\10.2.0\admin\kemu3\bdump\kemu3_smon_29704.trc:
ORA-00604: error occurred at recursive SQL level 1
ORA-08103: object no longer exists

replication_dependency_tracking turned off (no async multimaster replication found)
Starting background process QMNC
QMNC started with pid=18, OS id=29876
Fri Jul 18 22:02:53 2014
Errors in file d:\oracle\product\10.2.0\admin\kemu3\bdump\kemu3_smon_29704.trc:
ORA-00604: error occurred at recursive SQL level 1
ORA-08103: object no longer exists

Fri Jul 18 22:02:54 2014
ORA-604 signalled during: alter database open...

对数据库启动过程做10046

PARSING IN CURSOR #22 len=210 dep=2 uid=0 oct=3 lid=0 tim=20960424464 hv=864012087 ad='3063f0b4'
select /*+ rule */ bucket_cnt, row_cnt, cache_cnt, null_cnt, timestamp#, sample_size, minimum, 
maximum, distcnt, lowval, hival, density, col#, spare1, spare2, avgcln from hist_head$ where obj#=:1 and intcol#=:2
END OF STMT
EXEC #22:c=0,e=80,p=0,cr=0,cu=0,mis=0,r=0,dep=2,og=3,tim=20960424461
WAIT #22: nam='db file sequential read' ela= 5452 file#=1 block#=60213 blocks=1 obj#=4586 tim=20960429962
FETCH #22:c=0,e=5967,p=1,cr=1,cu=0,mis=0,r=0,dep=2,og=3,tim=20960430462
*** KEWUXS - encountered error: (ORA-00604: 递归 SQL 级别 2 出现错误
ORA-08103: 对象不再存在
)  
*** kewrwdbi_1: Error=13515 encountered during run_once
BINDS #21:
kkscoacd
 Bind#0
  oacdty=02 mxl=22(22) mxlc=00 mal=00 scl=00 pre=00
  oacflg=08 fl2=0001 frm=00 csi=00 siz=24 off=0
  kxsbbbfp=0a217744  bln=22  avl=01  flg=05
  value=0
 Bind#1
  oacdty=01 mxl=32(20) mxlc=00 mal=00 scl=00 pre=00
  oacflg=18 fl2=0001 frm=01 csi=852 siz=32 off=0
  kxsbbbfp=0a217718  bln=32  avl=20  flg=05
  value="WRI$_ADV_DEFINITIONS"
 Bind#2
  oacdty=02 mxl=22(22) mxlc=00 mal=00 scl=00 pre=00
  oacflg=08 fl2=0001 frm=00 csi=00 siz=24 off=0
  kxsbbbfp=0a2176f4  bln=24  avl=02  flg=05
  value=1

这里很明显数据库启动过程,由于hist_head$的file 1 block 60213中的object_id 与 data_object_id 不匹配,从而出现ORA-08103错误,导致数据库无法正常启动,这里的故障的对象为hist_head$,非oracle核心对象,因此直接标记该block 为坏块(模拟普通ORA-08103并解决,模拟极端ORA-08103并解决,rman制造坏块,bbed修复坏块,bbed破坏数据文件),然后启动数据库,备份hist_head$表数据,然后truncate hist_head$,再插入hist_head$,整体完工.
在数据库open过程中,如果遇到ora-8103错误,导致数据库无法正常open,可以对其做10046定位到故障block和对象,然后判断对象是否数据库启动必须的对象,甚至是bootstarp$中对象,然后采取不同的处理方法.

分享一次ORA-01113 ORA-01110故障处理过程

Posted on 2014 年 07 月 17 日 by 惜分飞

数据库报ORA-01113 ORA-01110无法正常open

SQL> alter database open;
alter database open
*
ERROR at line 1:
ORA-01113: file 1 needs media recovery
ORA-01110: data file 1: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\SYSTEM01.DBF'

alert日志

Wed Jul 16 17:17:56 2014
ALTER DATABASE   MOUNT
Successful mount of redo thread 1, with mount id 1380870980
Database mounted in Exclusive Mode
Lost write protection disabled
Completed: ALTER DATABASE   MOUNT
Wed Jul 16 17:19:01 2014
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_m000_3540.trc  (incident=367575):
ORA-00700: soft internal error, arguments: [dbgrmblcp_corrupt_page], [D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\metadata\HM_FINDING.ams], 
[1245], [], [], [], [], [], [], [], [], []
ORA-01113: file 1 needs media recovery
ORA-01110: data file 1: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\SYSTEM01.DBF'
Incident details in: D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\incident\incdir_367575\orcl_m000_3540_i367575.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_m000_3540.trc  (incident=367576):
ORA-00600: internal error code, arguments: [dbgrmblgp_get_page_1], [1245], [0], [80], [], [], [], [], [], [], [], []
ORA-01113: file 1 needs media recovery
ORA-01110: data file 1: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\SYSTEM01.DBF'
Incident details in: D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\incident\incdir_367576\orcl_m000_3540_i367576.trc
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_m000_3540.trc:
ORA-51106: check failed to complete due to an error.  See error below
ORA-00600: internal error code, arguments: [dbgrmblgp_get_page_1], [1245], [0], [80], [], [], [], [], [], [], [], []
ORA-01113: file 1 needs media recovery
ORA-01110: data file 1: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\SYSTEM01.DBF'

这里出现ORA-00700[dbgrmblcp_corrupt_page]与ORA-00600[dbgrmblgp_get_page_1]是Bug 10321285 : ORA-600 [DBGRMBLCP_CORRUPT_PAGE]

尝试recover database 遭遇ORA-00283 ORA-16433

SQL> recover database;
ORA-00283: recovery session canceled due to errors
ORA-16433: The database must be opened in read/write mode.

alert日志信息

Wed Jul 16 17:36:33 2014
ALTER DATABASE RECOVER  database  
Media Recovery Start
 started logmerger process
Wed Jul 16 17:36:33 2014
Media Recovery failed with error 16433
Slave exiting with ORA-283 exception
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_pr00_3868.trc:
ORA-00283: recovery session canceled due to errors
ORA-16433: The database must be opened in read/write mode.
Recovery Slave PR00 previously exited with exception 283
ORA-283 signalled during: ALTER DATABASE RECOVER  database  ...
Wed Jul 16 17:36:45 2014
alter database open
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_3236.trc:
ORA-01113: file 1 needs media recovery
ORA-01110: data file 1: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\SYSTEM01.DBF'
ORA-1113 signalled during: alter database open...

重建控制文件后恢复,遭遇ORA-600 2662错误

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

Total System Global Area      10255212544 bytes
Fixed Size                        2264088 bytes
Variable Size                  4529849320 bytes
Database Buffers               5704253440 bytes
Redo Buffers                     18845696 bytes
SQL> @d:\ctl.sql

Control file created.

SQL> recover database using backup controlfile;
ORA-00279: change 13953689551797 generated at 07/16/2014 17:53:41 needed for
thread 1
ORA-00289: suggestion :
D:\APP\ADMINISTRATOR\FAST_RECOVERY_AREA\ORCL\ARCHIVELOG\2014_07_16\O1_MF_1_1_%U_

.ARC
ORA-00280: change 13953689551797 for thread 1 is in sequence #1


Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
d:\app\administrator\oradata\orcl\redo01.log
Log applied.
Media recovery complete.
SQL> alter database open resetlogs;
alter database open resetlogs
*
ERROR at line 1:
ORA-01092: ORACLE instance terminated. Disconnection forced
ORA-00704: bootstrap process failure
ORA-00704: bootstrap process failure
ORA-00600: internal error code, arguments: [2662], [3248], [3635774399],
[3249], [3580470066], [4194545], [], [], [], [], [], []
Process ID: 3932
Session ID: 200 Serial number: 1

因为该数据库是11.2.0.3未打上scn patch,直接推进scn(可以使用event,隐含参数,oradebug,bbed等),数据库就正常open

ORA-00600[17182],ORA-00600[25027],ORA-00600[kghfrempty:ds]故障处理

Posted on 2014 年 07 月 15 日 by 惜分飞

数据库不能启动(或者启动后马上crash),alert日志报错ORA-00600[17182],ORA-00600[25027],ORA-00600[kghfrempty:ds]等错误

Tue Jul 08 23:36:06 2014
alter database open
Beginning crash recovery of 1 threads
 parallel recovery started with 32 processes
Started redo scan
Completed redo scan
 read 1409 KB redo, 0 data blocks need recovery
Started redo application at
 Thread 1: logseq 2855, block 3
Recovery of Online Redo Log: Thread 1 Group 5 Seq 2855 Reading mem 0
  Mem# 0: /backup/oradata/ztmdb/redo05.log
Completed redo application of 0.00MB
Completed crash recovery at
 Thread 1: logseq 2855, block 2822, scn 104627804
 0 data blocks read, 0 data blocks written, 1409 redo k-bytes read
Tue Jul 08 23:36:12 2014
Thread 1 advanced to log sequence 2856 (thread open)
Thread 1 opened at log sequence 2856
  Current log# 1 seq# 2856 mem# 0: /backup/oradata/ztmdb/redo01.log
Successful open of redo thread 1
MTTR advisory is disabled because FAST_START_MTTR_TARGET is not set
Tue Jul 08 23:36:13 2014
SMON: enabling cache recovery
[15126] Successfully onlined Undo Tablespace 2.
Undo initialization finished serial:0 start:10340864 end:10340964 diff:100 (1 seconds)
Verifying file header compatibility for 11g tablespace encryption..
Verifying 11g file header compatibility for tablespace encryption completed
SMON: enabling tx recovery
Database Characterset is ZHS16GBK
Errors in file /home/oracle/diag/rdbms/ztmdb/ztmdb/trace/ztmdb_smon_15100.trc  (incident=62061):
ORA-00600: internal error code, arguments: [17182], [0x2B6DFD23D7A0], [], [], [], [], [], [], [], [], [], []
Incident details in: /home/oracle/diag/rdbms/ztmdb/ztmdb/incident/incdir_62061/ztmdb_smon_15100_i62061.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
No Resource Manager plan active
Errors in file /home/oracle/diag/rdbms/ztmdb/ztmdb/trace/ztmdb_ora_15126.trc  (incident=62093):
ORA-00600: internal error code, arguments: [25027], [0], [875836979], [], [], [], [], [], [], [], [], []
Incident details in: /home/oracle/diag/rdbms/ztmdb/ztmdb/incident/incdir_62093/ztmdb_ora_15126_i62093.trc
Block recovery from logseq 2856, block 98 to scn 104627948
Recovery of Online Redo Log: Thread 1 Group 1 Seq 2856 Reading mem 0
  Mem# 0: /backup/oradata/ztmdb/redo01.log
Block recovery completed at rba 2856.99.16, scn 0.104627949
ORACLE Instance ztmdb (pid = 32) - Error 600 encountered while recovering transaction (14, 2) on object 15113.
Errors in file /home/oracle/diag/rdbms/ztmdb/ztmdb/trace/ztmdb_smon_15100.trc  (incident=62066):
ORA-00600: internal error code, arguments: [kghfrempty:ds], [0x2B6DFD23D790], [], [], [], [], [], [], [], [], [], []
ORA-07445: exception encountered: core dump [kghrst()+1835] [SIGSEGV] [ADDR:0x0] [PC:0x97EE385] [SI_KERNEL(general_protection)] []
ORA-00600: internal error code, arguments: [17182], [0x2B6DFD23D7A0], [], [], [], [], [], [], [], [], [], []
Incident details in: /home/oracle/diag/rdbms/ztmdb/ztmdb/incident/incdir_62066/ztmdb_smon_15100_i62066.trc
PMON (ospid: 14978): terminating the instance due to error 474
Tue Jul 08 23:36:26 2014
System state dump requested by (instance=1, osid=14978 (PMON)), summary=[abnormal instance termination].
System State dumped to trace file /home/oracle/diag/rdbms/ztmdb/ztmdb/trace/ztmdb_diag_14996_20140708233626.trc
Dumping diagnostic data in directory=[cdmp_20140708233626], requested by (instance=1, osid=14978 (PMON)), summary=[abnormal instance termination].
Tue Jul 08 23:36:27 2014
Instance terminated by PMON, pid = 14978

这里的错误比较明显,数据库进行完前滚后,smon进行回滚发现有部分block CORRUPTED 导致该问题,解决该问题思路就是:
1.设置event 屏蔽回滚
2.如果1不行,设置回滚段相关隐含参数,屏蔽回滚
3.逻辑方式重建数据库

补充知识点
ORA-600 [25027]

ERROR:
  Format: ORA-600 [25027] [a] [b]

VERSIONS:
  versions 9.2 and above


ARGUMENTS:
  Arg [a]  Tablespace Number (TSN)
  Arg [b]  Decimal Relative Data Block Address (RDBA)

记录一次ORA-600 3004 恢复过程和处理思路

Posted on 2014 年 07 月 15 日 by 惜分飞

10.1.0.2数据库在启动的时候报ORA-00600[3004]错误

SQL> startup
ORACLE 例程已经启动。
Total System Global Area 1042254360 bytes
Fixed Size 743960 bytes
Variable Size 503316480 bytes
Database Buffers 536870912 bytes
Redo Buffers 1323008 bytes
数据库装载完毕。
ORA-00600: 内部错误代码，参数: [3004], [1], [0], [0], [], [], [], []

alert日志信息

Tue Jul 15 10:57:11 2014
Database mounted in Exclusive Mode.
Completed: ALTER DATABASE   MOUNT
Tue Jul 15 10:57:12 2014
ALTER DATABASE OPEN
Tue Jul 15 10:57:12 2014
Beginning crash recovery of 1 threads
 attempting to start a parallel recovery with 3 processes
 parallel recovery started with 3 processes
Tue Jul 15 10:57:12 2014
Started first pass scan
Tue Jul 15 10:57:12 2014
Errors in file d:\oracle\product\10.1.0\admin\orcl\udump\orcl_ora_1084.trc:
ORA-00600: 内部错误代码, 参数: [3004], [1], [0], [0], [], [], [], []

Tue Jul 15 10:57:13 2014
Errors in file d:\oracle\product\10.1.0\admin\orcl\bdump\orcl_p000_3780.trc:
ORA-10388: parallel query server interrupt (failure)

Tue Jul 15 10:57:13 2014
Errors in file d:\oracle\product\10.1.0\admin\orcl\bdump\orcl_p002_3420.trc:
ORA-10388: parallel query server interrupt (failure)

Tue Jul 15 10:57:14 2014
Errors in file d:\oracle\product\10.1.0\admin\orcl\bdump\orcl_p001_3784.trc:
ORA-10388: parallel query server interrupt (failure)

Tue Jul 15 10:57:14 2014
Aborting crash recovery due to error 600
Tue Jul 15 10:57:14 2014
Errors in file d:\oracle\product\10.1.0\admin\orcl\udump\orcl_ora_1084.trc:
ORA-00600: 内部错误代码, 参数: [3004], [1], [0], [0], [], [], [], []

ORA-600 signalled during: ALTER DATABASE OPEN...

根据老杨的blog,出现该问题，很可能是crontrolfile异常导致,所以这里可以考虑通过重建控制文件或者把当前控制文件当作备份控制文件来使用

Tue Jul 15 13:42:31 2014
ALTER DATABASE RECOVER database using backup controlfile
Tue Jul 15 13:42:31 2014
Media Recovery Start
WARNING! Recovering data file 1 from a fuzzy file. If not the current file
it might be an online backup taken without entering the begin backup command.
WARNING! Recovering data file 2 from a fuzzy file. If not the current file
it might be an online backup taken without entering the begin backup command.
WARNING! Recovering data file 3 from a fuzzy file. If not the current file
it might be an online backup taken without entering the begin backup command.
WARNING! Recovering data file 4 from a fuzzy file. If not the current file
it might be an online backup taken without entering the begin backup command.
WARNING! Recovering data file 5 from a fuzzy file. If not the current file
it might be an online backup taken without entering the begin backup command.
WARNING! Recovering data file 6 from a fuzzy file. If not the current file
it might be an online backup taken without entering the begin backup command.
WARNING! Recovering data file 7 from a fuzzy file. If not the current file
it might be an online backup taken without entering the begin backup command.
WARNING! Recovering data file 8 from a fuzzy file. If not the current file
it might be an online backup taken without entering the begin backup command.
WARNING! Recovering data file 9 from a fuzzy file. If not the current file
it might be an online backup taken without entering the begin backup command.
WARNING! Recovering data file 10 from a fuzzy file. If not the current file
it might be an online backup taken without entering the begin backup command.
WARNING! Recovering data file 11 from a fuzzy file. If not the current file
it might be an online backup taken without entering the begin backup command.
attempting to start a parallel recovery with 3 processes
parallel recovery started with 3 processes
Starting datafile 1 with incarnation depth 0 in thread 1 sequence 794
Datafile 1: 'D:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL\SYSTEM01.DBF'
Starting datafile 2 with incarnation depth 0 in thread 1 sequence 794
Datafile 2: 'D:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL\UNDOTBS01.DBF'
Starting datafile 3 with incarnation depth 0 in thread 1 sequence 794
Datafile 3: 'D:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL\SYSAUX01.DBF'
Starting datafile 4 with incarnation depth 0 in thread 1 sequence 794
Datafile 4: 'D:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL\USERS01.DBF'
Starting datafile 5 with incarnation depth 0 in thread 1 sequence 794
Datafile 5: 'E:\ORADB\USER1_1.ORA'
Starting datafile 6 with incarnation depth 0 in thread 1 sequence 794
Datafile 6: 'E:\ORADB\USER1_2.ORA'
Starting datafile 7 with incarnation depth 0 in thread 1 sequence 794
Datafile 7: 'E:\ORADB\USER1_3.ORA'
Starting datafile 8 with incarnation depth 0 in thread 1 sequence 794
Datafile 8: 'E:\ORADB\USER1_4.ORA'
Starting datafile 9 with incarnation depth 0 in thread 1 sequence 794
Datafile 9: 'E:\ORADB\INDEX1_1.ORA'
Starting datafile 10 with incarnation depth 0 in thread 1 sequence 794
Datafile 10: 'E:\ORADB\INDEX1_2.ORA'
Starting datafile 11 with incarnation depth 0 in thread 1 sequence 794
Datafile 11: 'E:\ORADB\TEMP1_1.ORA'
Media Recovery Log
ORA-279 signalled during: ALTER DATABASE RECOVER database using backup cont...
Tue Jul 15 13:43:03 2014
ALTER DATABASE RECOVER LOGFILE 'D:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL\REDO01.LOG'
Tue Jul 15 13:43:03 2014
Media Recovery Log D:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL\REDO01.LOG
Completed: ALTER DATABASE RECOVER LOGFILE 'D:\ORACLE\PRODU
Tue Jul 15 13:43:17 2014
alter database open resetlogs
RESETLOGS after complete recovery through change 3142208
Resetting resetlogs activation ID 1378452168 (0x522982c8)
Setting recovery target incarnation to 3
Tue Jul 15 13:43:18 2014
Setting recovery target incarnation to 3
Tue Jul 15 13:43:18 2014
Flashback Database Disabled
Tue Jul 15 13:43:19 2014
Assigning activation ID 1380750902 (0x524c9636)
Maximum redo generation record size = 120832 bytes
Maximum redo generation change vector size = 116476 bytes
Private_strands 7 at log switch
Thread 1 opened at log sequence 1
Current log# 1 seq# 1 mem# 0: D:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL\REDO01.LOG
Successful open of redo thread 1
Tue Jul 15 13:43:19 2014
MTTR advisory is disabled because FAST_START_MTTR_TARGET is not set
Tue Jul 15 13:43:19 2014
SMON: enabling cache recovery
Tue Jul 15 13:43:20 2014
Errors in file d:\oracle\product\10.1.0\admin\orcl\udump\orcl_ora_1484.trc:
ORA-00600: 内部错误代码, 参数: [2662], [0], [3142214], [0], [3142438], [8388617], [], []

Tue Jul 15 13:43:21 2014
Errors in file d:\oracle\product\10.1.0\admin\orcl\udump\orcl_ora_1484.trc:
ORA-00600: 内部错误代码, 参数: [2662], [0], [3142214], [0], [3142438], [8388617], [], []
Tue Jul 15 13:43:21 2014
Error 600 happened during db open, shutting down database
USER: terminating instance due to error 600

这里出现ORA-600[2662]因为scn相差较小,直接重启几次,然后数据库出现如下启动正常但是出现ORA-01595和ORA-00600[4194]错误

Tue Jul 15 13:48:26 2014
Starting background process MMON
Starting background process MMNL
MMON started with pid=17, OS id=2896
MMNL started with pid=18, OS id=3828
Tue Jul 15 13:48:26 2014
Block recovery completed at rba 2.90.16, scn 0.3162303
Tue Jul 15 13:48:26 2014
Errors in file d:\oracle\product\10.1.0\admin\orcl\bdump\orcl_smon_3724.trc:
ORA-01595: error freeing extent (3) of rollback segment (1))
ORA-00607: Internal error occurred while making a change to a data block
ORA-00600: internal error code, arguments: [4194], [57], [6], [], [], [], [], []

Tue Jul 15 13:48:26 2014
Completed: alter database open
Tue Jul 15 13:48:27 2014
Errors in file d:\oracle\product\10.1.0\admin\orcl\bdump\orcl_j000_2956.trc:
ORA-00600: internal error code, arguments: [4193], [1375], [1379], [], [], [], [], []

通过设置undo_management=manual,重建undo表空间解决,至此本数据库恢复完成,建议对其进行逻辑方式重建

误drop tablespace后使用flashback database闪回异常处理

Posted on 2014 年 07 月 06 日 by 惜分飞

有朋友夜间打电话请求技术支持,数据库表空间被删除，然后使用flashback database 无法正常恢复。通过分析alert日志发现，创建表空间(xifenfei 别名),发现已经存在,就删除了该表空间(其实是业务核心表空间,误删除了,是否是连接错了数据库？)

Sat Jul 05 17:10:06 2014
create tablespace XIFENFEI datafile 'D:\Oracle\oradata\orcl\HANDBB.DBF' 
size 50M autoextend on next 50M maxsize 1536M extent management local

Sat Jul 05 17:10:06 2014
ORA-1543 signalled during: create tablespace XIFENFEI datafile 'D:\Oracle\oradata\orcl\HANDBB.DBF' 
size 50M autoextend on next 50M maxsize 1536M extent management local
...
Sat Jul 05 17:10:59 2014
drop tablespace XIFENFEI

Sat Jul 05 17:10:59 2014
ORA-1549 signalled during: drop tablespace XIFENFEI
...
Sat Jul 05 17:11:05 2014
drop tablespace XIFENFEI

ORA-1549 signalled during: drop tablespace XIFENFEI
...
Sat Jul 05 17:11:24 2014
drop tablespace XIFENFEI including contents

Sat Jul 05 17:11:36 2014
Thread 1 advanced to log sequence 186895 (LGWR switch)
  Current log# 1 seq# 186895 mem# 0: D:\ORACLE\PRODUCT\10.2.0\ORADATA\GZSERVER\REDO01.LOG
Sat Jul 05 17:11:36 2014
ARC3: Warning.  Log sequence in archive filename wrapped
to fix length as indicated by %S in LOG_ARCHIVE_FORMAT.
Old log archive with same name might be overwritten.
Sat Jul 05 17:11:43 2014
LNS: Standby redo logfile selected for thread 1 sequence 186895 for destination LOG_ARCHIVE_DEST_4
Sat Jul 05 17:11:49 2014
LNS: Standby redo logfile selected for thread 1 sequence 186895 for destination LOG_ARCHIVE_DEST_2
Sat Jul 05 17:12:09 2014
Starting control autobackup
Control autobackup written to DISK device
	handle 'D:\FULLBACK\C-1342406147-20140705-00'
Completed: drop tablespace XIFENFEI including contents

通过这里可以发现删除表空间时间点为2014年7月5日17:12:09

闪回数据库到删除之前时间点

Sat Jul 05 18:16:54 2014
Database mounted in Exclusive Mode
Completed: ALTER DATABASE   MOUNT
Sat Jul 05 18:19:23 2014
FLASHBACK DATABASE TO TIMESTAMP TO_TIMESTAMP('2014-07-05 17:09:00','YYYY-MM-DD HH24:MI:SS')
Sat Jul 05 18:19:25 2014
Flashback Restore Start
Sat Jul 05 18:20:52 2014
--闪回时的控制文件中无表空间XIFENFEI信息(因为已经被删除)，
--但是由于闪回的system 数据字典里面有相关文件信息,因此数据库在控制文件里面创建相关文件信息
Flashback: created tablespace #6: 'XIFENFEI' in the controlfile.
Flashback: created OFFLINE file 'UNNAMED00012' for tablespace #6 in the controlfile.
Filename was:
'D:\ORACLE\PRODUCT\10.2.0\ORADATA\GZSERVER\XIFENFEI4.DBF' when dropped.
File will have to be restored from a backup and recovered.
Flashback: created OFFLINE file 'UNNAMED00010' for tablespace #6 in the controlfile.
Filename was:
'D:\ORACLE\PRODUCT\10.2.0\ORADATA\GZSERVER\XIFENFEI3.DBF' when dropped.
File will have to be restored from a backup and recovered.
Flashback: created OFFLINE file 'UNNAMED00008' for tablespace #6 in the controlfile.
Filename was:
'D:\ORACLE\PRODUCT\10.2.0\ORADATA\GZSERVER\XIFENFEI2.DBF' when dropped.
File will have to be restored from a backup and recovered.
Flashback: created OFFLINE file 'UNNAMED00005' for tablespace #6 in the controlfile.
Filename was:
'D:\ORACLE\PRODUCT\10.2.0\ORADATA\GZSERVER\XIFENFEI.DBF' when dropped.
File will have to be restored from a backup and recovered.
Flashback Restore Complete
Flashback Media Recovery Start
 parallel recovery started with 15 processes
Flashback Media Recovery Log D:\ORACLE\PRODUCT\10.2.0\ORADATA\ARCHIVE\ARC\ARC86891_0766797318.001
Flashback Media Recovery Log D:\ORACLE\PRODUCT\10.2.0\ORADATA\ARCHIVE\ARC\ARC86892_0766797318.001
Sat Jul 05 18:21:40 2014
Flashback Media Recovery Log D:\ORACLE\PRODUCT\10.2.0\ORADATA\ARCHIVE\ARC\ARC86893_0766797318.001
Sat Jul 05 18:21:47 2014
WARNING: inbound connection timed out (ORA-3136)
Sat Jul 05 18:22:11 2014
Recovery of Online Redo Log: Thread 1 Group 3 Seq 186894 Reading mem 0
  Mem# 0: D:\ORACLE\PRODUCT\10.2.0\ORADATA\GZSERVER\REDO03.LOG
Sat Jul 05 18:22:39 2014
Incomplete Recovery applied until change 9078991241
Flashback Media Recovery Complete
ORA-38795 signalled during: FLASHBACK DATABASE TO TIMESTAMP TO_TIMESTAMP('2014-07-05 17:09:00','YYYY-MM-DD HH24:MI:SS')...
Sat Jul 05 18:30:11 2014
ALTER DATABASE OPEN RESETLOGS
Sat Jul 05 18:30:11 2014
ORA-1245 signalled during: ALTER DATABASE OPEN RESETLOGS...

--重命名相关UNNAMExxxxx文件名到硬盘上被删除表空间文件
Sat Jul 05 18:39:31 2014
alter database rename file 'D:\ORACLE\PRODUCT\10.2.0\DB_1\DATABASE\UNNAMED00005' 
to 'D:\oracle\product\10.2.0\oradata\gzserver\XIFENFEI.DBF'
Sat Jul 05 18:39:31 2014
Completed: alter database rename file 'D:\ORACLE\PRODUCT\10.2.0\DB_1\DATABASE\UNNAMED00005' 
to 'D:\oracle\product\10.2.0\oradata\gzserver\XIFENFEI.DBF'
Sat Jul 05 18:39:47 2014
alter database rename file 'D:\ORACLE\PRODUCT\10.2.0\DB_1\DATABASE\UNNAMED00008' 
to 'D:\oracle\product\10.2.0\oradata\gzserver\XIFENFEI2.DBF'
Sat Jul 05 18:39:47 2014
Completed: alter database rename file 'D:\ORACLE\PRODUCT\10.2.0\DB_1\DATABASE\UNNAMED00008' 
to 'D:\oracle\product\10.2.0\oradata\gzserver\XIFENFEI2.DBF'
Sat Jul 05 18:39:59 2014
alter database rename file 'D:\ORACLE\PRODUCT\10.2.0\DB_1\DATABASE\UNNAMED00010' 
to 'D:\oracle\product\10.2.0\oradata\gzserver\XIFENFEI3.DBF'
Sat Jul 05 18:39:59 2014
Completed: alter database rename file 'D:\ORACLE\PRODUCT\10.2.0\DB_1\DATABASE\UNNAMED00010' 
to 'D:\oracle\product\10.2.0\oradata\gzserver\XIFENFEI3.DBF'
Sat Jul 05 18:40:12 2014
alter database rename file 'D:\ORACLE\PRODUCT\10.2.0\DB_1\DATABASE\UNNAMED00012' 
to 'D:\oracle\product\10.2.0\oradata\gzserver\XIFENFEI4.DBF'
Sat Jul 05 18:40:12 2014
Completed: alter database rename file 'D:\ORACLE\PRODUCT\10.2.0\DB_1\DATABASE\UNNAMED00012' 
to 'D:\oracle\product\10.2.0\oradata\gzserver\XIFENFEI4.DBF'
Sat Jul 05 18:41:25 2014
ALTER DATABASE OPEN RESETLOGS
Sat Jul 05 18:41:25 2014
ORA-1245 signalled during: ALTER DATABASE OPEN RESETLOGS...

到这里,可以看出来,因为数据库整体已经闪回,但是被drop 表空间的四个数据文件未被正常闪回,因此该四个文件的scn可能异常,通过数据库恢复检查脚本(Oracle Database Recovery Check)检查结果如下
datafile_scn
datafile_header_scn
这里很明显控制文件中的scn信息混乱不做过多参考,数据文件头信息看到只有ts# 6中的四个文件(就是被删除的表空间文件)scn过大,其他文件scn都处于正常状态(处于干净状态),到这里很明显,数据库闪回成功,但是被drop tablespace的数据文件未被闪回,因此该故障可以通过bbed修改四个文件头信息和其他文件相同即可使得数据库恢复正常
温馨提示:数据库操作需要慎重,备份重于一切