有网友数据库启动报ORA-600 999错误,无法正常open,让我们介入分析,帮忙恢复其中部分数据
数据库启动报ORA-600 999

Sun Jul 31 23:09:36 2016
SMON: enabling cache recovery
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 d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_smon_3356.trc  (incident=179779):
ORA-00600: internal error code, arguments: [999], [0x7FFAE748013], [], [], [], [], [], [], [], [], [], []
Incident details in: d:\app\administrator\diag\rdbms\orcl\orcl\incident\incdir_179779\orcl_smon_3356_i179779.trc
No Resource Manager plan active
Starting background process QMNC
Sun Jul 31 23:09:37 2016
QMNC started with pid=20, OS id=5068 
ORACLE Instance orcl (pid = 13) - Error 600 encountered while recovering transaction (7, 1).
Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_smon_3356.trc:
ORA-00600: internal error code, arguments: [999], [0x7FFAE748013], [], [], [], [], [], [], [], [], [], []
Completed: alter database open
Sun Jul 31 23:09:38 2016
db_recovery_file_dest_size of 8680 MB is 0.00% used. This is a
user-specified limit on the amount of space that will be used by this
database for recovery-related files, and does not reflect the amount of
space available in the underlying filesystem or ASM diskgroup.
Trace dumping is performing id=[cdmp_20160731230939]
Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_smon_3356.trc  (incident=179785):
ORA-00600: internal error code, arguments: [999], [0x7FFAE748013], [], [], [], [], [], [], [], [], [], []
ORACLE Instance orcl (pid = 13) - Error 600 encountered while recovering transaction (7, 1).
Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_smon_3356.trc:
ORA-00600: internal error code, arguments: [999], [0x7FFAE748013], [], [], [], [], [], [], [], [], [], []
Sun Jul 31 23:09:41 2016
Starting background process CJQ0
Sun Jul 31 23:09:41 2016
CJQ0 started with pid=25, OS id=2572 
Process debug not enabled via parameter _debug_enable
Trace dumping is performing id=[cdmp_20160731230942]
PMON (ospid: 3948): terminating the instance due to error 474
Sun Jul 31 23:09:48 2016
opiodr aborting process unknown ospid (2592) as a result of ORA-1092
Sun Jul 31 23:09:48 2016
ORA-1092 : opitsk aborting process
Sun Jul 31 23:09:52 2016
Instance terminated by PMON, pid = 3948

设置_offline_rollback_segments数据库启动正常

Sun Jul 31 23:18:13 2016
ALTER DATABASE OPEN
Thread 1 opened at log sequence 16
  Current log# 1 seq# 16 mem# 0: D:\APP\ADMINISTRATOR\ORADATA\ORCL\REDO01.LOG
Successful open of redo thread 1
SMON: enabling cache recovery
Successfully onlined Undo Tablespace 5.
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
No Resource Manager plan active
Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_smon_4372.trc  (incident=182188):
ORA-00600: internal error code, arguments: [kdBlkCheckError], [3], [224], [38508], [], [], [], [], [], [], [], []
Incident details in: d:\app\administrator\diag\rdbms\orcl\orcl\incident\incdir_182188\orcl_smon_4372_i182188.trc
Doing block recovery for file 3 block 224
Resuming block recovery (PMON) for file 3 block 224
Block recovery from logseq 16, block 2945 to scn 15431544
Recovery of Online Redo Log: Thread 1 Group 1 Seq 16 Reading mem 0
  Mem# 0: D:\APP\ADMINISTRATOR\ORADATA\ORCL\REDO01.LOG
Trace dumping is performing id=[cdmp_20160731231815]
Block recovery stopped at EOT rba 16.2952.16
Block recovery completed at rba 16.2952.16, scn 0.15431543
Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_smon_4372.trc:
ORA-00607: Internal error occurred while making a change to a data block
ORA-00600: internal error code, arguments: [kdBlkCheckError], [3], [224], [38508], [], [], [], [], [], [], [], []
Sun Jul 31 23:18:19 2016
Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_smon_4372.trc  (incident=182189):
ORA-00600: internal error code, arguments: [kdBlkCheckError], [3], [224], [38508], [], [], [], [], [], [], [], []
Incident details in: d:\app\administrator\diag\rdbms\orcl\orcl\incident\incdir_182189\orcl_smon_4372_i182189.trc
Starting background process QMNC
Sun Jul 31 23:18:19 2016
QMNC started with pid=20, OS id=4920 
Doing block recovery for file 3 block 224
Resuming block recovery (PMON) for file 3 block 224
Block recovery from logseq 16, block 2945 to scn 15431544
Recovery of Online Redo Log: Thread 1 Group 1 Seq 16 Reading mem 0
  Mem# 0: D:\APP\ADMINISTRATOR\ORADATA\ORCL\REDO01.LOG
Block recovery completed at rba 16.2952.16, scn 0.15431545
Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_smon_4372.trc:
ORA-00607: Internal error occurred while making a change to a data block
ORA-00600: internal error code, arguments: [kdBlkCheckError], [3], [224], [38508], [], [], [], [], [], [], [], []
Starting background process SMCO
Sun Jul 31 23:18:19 2016
SMCO started with pid=21, OS id=3176 
Sun Jul 31 23:18:20 2016
Trace dumping is performing id=[cdmp_20160731231820]
Completed: ALTER DATABASE OPEN

尝试删除异常回滚段

Sun Jul 31 23:15:07 2016
drop rollback segment "_SYSSMU7_1101470402$"
Sun Jul 31 23:15:07 2016
Corrupt Block Found
         TSN = 2, TSNAME = UNDOTBS1
         RFN = 3, BLK = 224, RDBA = 12583136
         OBJN = -1, OBJD = -1, OBJECT = , SUBOBJECT = 
         SEGMENT OWNER = , SEGMENT TYPE = 
Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_ora_5300.trc  (incident=181035):
ORA-00600: 内部错误代码, 参数: [kdBlkCheckError], [3], [224], [38508], [], [], [], [], [], [], [], []
Incident details in: d:\app\administrator\diag\rdbms\orcl\orcl\incident\incdir_181035\orcl_ora_5300_i181035.trc
Doing block recovery for file 3 block 224
Resuming block recovery (PMON) for file 3 block 224
Block recovery from logseq 14, block 8682 to scn 15397854
Recovery of Online Redo Log: Thread 1 Group 2 Seq 14 Reading mem 0
  Mem# 0: D:\APP\ADMINISTRATOR\ORADATA\ORCL\REDO02.LOG
Block recovery completed at rba 14.8688.16, scn 0.15397855
ORA-607 signalled during: drop rollback segment "_SYSSMU7_1101470402$"...
Corrupt Block Found
         TSN = 2, TSNAME = UNDOTBS1
         RFN = 3, BLK = 224, RDBA = 12583136
         OBJN = -1, OBJD = -1, OBJECT = , SUBOBJECT = 
         SEGMENT OWNER = , SEGMENT TYPE = 

从这里看,我们可以确定file 3 block 224异常,导致删除回滚段异常.和mos官方给出来的案例类似,由于undo坏块导致数据库报ORA-600 999错误

mos中ORA-600 999报错信息
官方的益处ORA-600[999]报错,也是由于undo坏块引起和本文的报错基本上一致

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因为只要部分数据,直接屏蔽回滚段,数据库不再crash,导出需要对象即可