分类目录归档：ORA-xxxxx

ORA-600 kddummy_blkchk导致数据库无法open

发表于 2018 年 9 月 16 日 由 惜分飞

数据库启动报ORA-600 kddummy_blkchk

Sun Sep  9 21:45:28 2018
SMON: enabling tx recovery
Sun Sep  9 21:45:28 2018
Database Characterset is ZHS16GBK
Opening with internal Resource Manager plan
where NUMA PG = 1, CPUs = 24
replication_dependency_tracking turned off (no async multimaster replication found)
Starting background process QMNC
QMNC started with pid=35, OS id=53346452
Sun Sep  9 21:45:28 2018
Errors in file /u01/app/oracle/admin/orcl/bdump/orcl_smon_39714888.trc:
ORA-00600: internal error code, arguments: [kddummy_blkchk], [609], [6], [18018], [], [], [], []
Sun Sep  9 21:45:28 2018
Completed: ALTER DATABASE OPEN
Sun Sep  9 21:45:28 2018
db_recovery_file_dest_size of 89900 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.
Sun Sep  9 21:45:29 2018
Errors in file /u01/app/oracle/admin/orcl/bdump/orcl_smon_39714888.trc:
ORA-00607: Internal error occurred while making a change to a data block
ORA-00600: internal error code, arguments: [kddummy_blkchk], [609], [6], [18018], [], [], [], []
Sun Sep  9 21:45:32 2018
Errors in file /u01/app/oracle/admin/orcl/bdump/orcl_smon_39714888.trc:
ORA-00600: internal error code, arguments: [kddummy_blkchk], [609], [6], [18018], [], [], [], []
Sun Sep  9 21:46:20 2018
Errors in file /u01/app/oracle/admin/orcl/bdump/orcl_pmon_11403488.trc:
ORA-00474: SMON process terminated with error
Sun Sep  9 21:46:20 2018
PMON: terminating instance due to error 474
Instance terminated by PMON, pid = 11403488

kddummy_blkchk错误mos记录

  Format: ORA-600 [kddummy_blkchk] [a] [b] 1


VERSIONS:
  versions 9.2 to 10.2

DESCRIPTION:

  --what condition caused the error to be reported

ARGUMENTS:
  Arg [a] Absolute file number
  Arg [b] Bock number
  Arg 1 Internal error code returned from kcbchk() which indicates the problem encountered.

trace文件信息

Block after image:
buffer tsn: 14 rdba: 0x98400006 (609/6)
scn: 0x0007.9e675f6d seq: 0x01 flg: 0x04 tail: 0x5f6d1e01
frmt: 0x02 chkval: 0x61ae type: 0x1e=KTFB Bitmapped File Space Bitmap
Hex dump of corrupt header 3 = CHKVAL
Dump of memory from 0x070000043F034000 to 0x070000043F034014

*** 2018-09-09 21:45:28.531
ksedmp: internal or fatal error
ORA-00600: internal error code, arguments: [kddummy_blkchk], [609], [6], [18018], [], [], [], []
----- Call Stack Trace -----
calling              call     entry                argument values in hex      
location             type     point                (? means dubious value)     
-------------------- -------- -------------------- ----------------------------
ksedst+001c          bl       ksedst1              90000000032FBDC ? 000000000 ?
ksedmp+0290          bl       ksedst               104A2CDD0 ?
ksfdmp+0018          bl       03F26B04             
kgerinv+00dc         bl       _ptrgl               
kseinpre+0040        bl       kgerinv              110123BE0 ? 000000001 ?
                                                   104BD0420 ? 07FFFFFFF ?
                                                   000000000 ?
ksesin+0048          bl       kseinpre             104BD0420 ? 07FFFFFFF ?
                                                   000000000 ?
kco_blkchk+0798      bl       ksesin               104BD0888 ? 300000003 ?
                                                   000000000 ? 000000261 ?
                                                   000000000 ? 000000006 ?
                                                   000000000 ? 000004662 ?
kcoapl+0d24          bl       kco_blkchk           000000000 ? 70000046D293500 ?
                                                   FFFFFFFFFFF9BA0 ? 1101954D0 ?
                                                   FFFFFFFFFFF9AC0 ?
kcbapl+0174          bl       kcoapl               FFFFFFFFFFFAFD0 ?
                                                   70000043F034000 ? 1104C2884 ?
                                                   EDEADBEEF ? 200000000000 ?
                                                   110000790 ? 000000000 ?
kcrfw_redo_gen+2988  bl       kcbapl               FFFFFFFFFFFA040 ?
                                                   70000046D293500 ? 100FAF764 ?
                                                   700000010008000 ? 000000000 ?
kcbchg1_main+25d4    bl       kcrfw_redo_gen       000000000 ? 000000000 ?
                                                   000000000 ? 000000001 ?
                                                   000000000 ? 000000001 ?
                                                   000000000 ? 000000002 ?
kcbchg1+038c         bl       kcbchg1_main         000000000 ? 000000000 ?
                                                   000000018 ? 000000000 ?
                                                   000000000 ? 000000228 ?
ktbchgro+0380        bl       kcbchg1              062886020 ? 1601C0F50 ?
                                                   FFFFFFFFFFFAE80 ?
                                                   FFFFFFFFFFFAEB8 ? 000000000 ?
                                                   000000000 ?
ktfbbset+01e0        bl       ktbchgro             000000000 ? 100000001 ?
                                                   FFFFFFFFFFFB110 ?
                                                   FFFFFFFFFFFAFD0 ? 000000000 ?
                                                   000000000 ? 000000000 ?
                                                   000000001 ?
ktfbfset+039c        bl       ktfbbset             000000000 ? 000000000 ?
                                                   000000000 ? 000000000 ?
                                                   700000010018078 ? 000000000 ?
                                                   110000790 ?
ktfbfundo+0208       bl       ktfbfset             00000000B ? 00000000B ?
ktfbhget+0760        bl       ktfbfundo            FFFFFFFFFFFBFF8 ? 200000000 ?
ktfbffpre+00d0       bl       ktfbhget             FFFFFFFFFFFBFF8 ? 200000002 ?
                                                   1100000000 ? 2033FBE8014 ?
kteopdelete+12dc     bl       ktfbffpre            FFFFFFFFFFFC678 ? 204BCDD80 ?
                                                   1CE04BCEEE8 ? 0FFFFEFFF ?
ktsxfastdele+0124    bl       kteopdelete          700000010018078 ?
                                                   700000010008000 ? 1104772A8 ?
                                                   700000464E35278 ?
                                                   700000464E35278 ? 000000000 ?
                                                   FFFFFFFFFFFBDA0 ?
kteopshrink+0308     bl       _ptrgl               
ktssdrbm_segment+0a  bl       kteopshrink          E0000000E ? FFFFFFFFFFFC608 ?
b0                                                 000000001 ? 000000001 ?
                                                   110477768 ? 000000002 ?
                                                   1100EA4E0 ?
ktssdro_segment+06d  bl       ktssdrbm_segment     FFFFFFFFFFFCFC8 ?
c                                                  FFFFFFFFFFFD090 ? 100000010 ?
                                                   000000000 ?
ktssdt_segs+03f4     bl       ktssdro_segment      70000046D28EA18 ? 6FFFFD3A0 ?
                                                   0FFFFD320 ?
ktmmon+135c          bl       ktssdt_segs          000000000 ?
                                                   7FFFFFFF7FFFFFFF ?
                                                   7FFFFFFF7FFFFFFF ?
                                                   000000000 ? 000000000 ?
                                                   000000000 ?
                                                   7FFFFFFC7FFFFFFC ?
                                                   05B9523F8 ?
ktmSmonMain+0030     bl       ktmmon               110000790 ?
ksbrdp+04b4          bl       _ptrgl               
opirip+03fc          bl       03F26C94             
opidrv+0458          bl       opirip               11029F970 ? 4102A12B0 ?
                                                   FFFFFFFFFFFF6B0 ?
sou2o+0090           bl       opidrv               3202D99A1C ? 4A004A628 ?
                                                   FFFFFFFFFFFF6B0 ?
opimai_real+0150     bl       01F93134             
main+0098            bl       opimai_real          4500000000000000 ?
                                                   800200140000400 ?
__start+0070         bl       main                 000000000 ? 000000000 ?
 
--------------------- Binary Stack Dump ---------------------

错误比较明显由于file 609 block 6异常，导致smon无法进行回滚,从使得数据库open之后,立马crash.这个问题可以通过使用bbed修复坏块解决,也可以通过设置合适的参数和事件,禁止smon的一些操作来规避
bbed修复block之后dbv检查

oracle@p740a:/tmp]$ dbv file=/u01/app/oracle/oradata/orcl/xifenfei38.dbf

DBVERIFY: Release 10.2.0.4.0 - Production on Sun Sep 16 11:01:54 2018

Copyright (c) 1982, 2007, Oracle.  All rights reserved.

DBVERIFY - Verification starting : FILE = /u01/app/oracle/oradata/orcl/xifenfei38.dbf



DBVERIFY - Verification complete

Total Pages Examined         : 1856000
Total Pages Processed (Data) : 1142647
Total Pages Failing   (Data) : 0
Total Pages Processed (Index): 710956
Total Pages Failing   (Index): 0
Total Pages Processed (Other): 2277
Total Pages Processed (Seg)  : 0
Total Pages Failing   (Seg)  : 0
Total Pages Empty            : 120
Total Pages Marked Corrupt   : 0
Total Pages Influx           : 0
Highest block SCN            : 2658994127 (7.2658994127)

ORA 600 kddummy_blkchk相关bug列表
bug

发表在 ORA-xxxxx | 标签为 , | 评论关闭

ORA-600 17182导致oracle异常

发表于 2018 年 5 月 22 日 由 惜分飞

正常运行的数据库突然爆ORA-00600 17182,然后直接crash,以前遇到过类似的case:分享一例由于主库逻辑坏块导致dataguard容灾失效,这又是一例数据库正常crash之后无法启动成功的case

Tue May 22 08:32:12 2018
Archived Log entry 84344 added for thread 1 sequence 90196 ID 0x103430df dest 1:
Tue May 22 09:05:42 2018
Thread 1 cannot allocate new log, sequence 90198
Private strand flush not complete
  Current log# 4 seq# 90197 mem# 0: +DATA/xifenfei/onlinelog/group_4.279.887464919
Thread 1 advanced to log sequence 90198 (LGWR switch)
  Current log# 2 seq# 90198 mem# 0: +DATA/xifenfei/onlinelog/group_2.263.887465041
Tue May 22 09:05:46 2018
Archived Log entry 84345 added for thread 1 sequence 90197 ID 0x103430df dest 1:
Tue May 22 09:07:42 2018
Errors in file /u01/app/diag/rdbms/xifenfei/xifenfei/trace/xifenfei_ora_16297.trc  (incident=592822):
ORA-00600: 内部错误代码, 参数: [17182], [0x7FE274EADBF8], [], [], [], [], [], [], [], [], [], []
Incident details in: /u01/app/diag/rdbms/xifenfei/xifenfei/incident/incdir_592822/xifenfei_ora_16297_i592822.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Tue May 22 09:07:45 2018
Dumping diagnostic data in directory=[cdmp_20180522090745], requested by (instance=1, osid=16297), summary=[incident=592822].
Tue May 22 09:07:46 2018
Sweep [inc][592822]: completed
Sweep [inc2][592822]: completed
Tue May 22 09:08:29 2018
Errors in file /u01/app/diag/rdbms/xifenfei/xifenfei/trace/xifenfei_ora_16297.trc  (incident=592824):
ORA-07445: 出现异常错误: 核心转储 [kghrcdepth()+168] [SIGSEGV] [ADDR:0x7FE2766ADD04] [PC:0x2C2B886] [Invalid permissions for mapped object] []
ORA-00600: 内部错误代码, 参数: [kghrcdepth:ds], [0x7FE274EADBE8], [], [], [], [], [], [], [], [], [], []
ORA-00600: 内部错误代码, 参数: [17182], [0x7FE274EADBF8], [], [], [], [], [], [], [], [], [], []
Incident details in: /u01/app/diag/rdbms/xifenfei/xifenfei/incident/incdir_592824/xifenfei_ora_16297_i592824.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Tue May 22 09:08:31 2018
Dumping diagnostic data in directory=[cdmp_20180522090831], requested by (instance=1, osid=16297), summary=[incident=592823].
Tue May 22 09:08:44 2018
Block recovery from logseq 90198, block 37639 to scn 161030804187
Recovery of Online Redo Log: Thread 1 Group 2 Seq 90198 Reading mem 0
  Mem# 0: +DATA/xifenfei/onlinelog/group_2.263.887465041
Block recovery completed at rba 90198.97219.16, scn 37.2117014236
Errors in file /u01/app/diag/rdbms/xifenfei/xifenfei/trace/xifenfei_pmon_7690.trc  (incident=592118):
ORA-00600: internal error code, arguments: [17182], [0x7F96BDA2AA70], [], [], [], [], [], [], [], [], [], []
Incident details in: /u01/app/diag/rdbms/xifenfei/xifenfei/incident/incdir_592118/xifenfei_pmon_7690_i592118.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Exception [type: SIGSEGV, SI_KERNEL(general_protection)] [ADDR:0x0] [PC:0x97E6B5C, kghpmfal()+216] [flags: 0x0, count: 1]
Errors in file /u01/app/diag/rdbms/xifenfei/xifenfei/trace/xifenfei_pmon_7690.trc  (incident=592119):
ORA-07445: exception encountered: core dump [kghpmfal()+216] [SIGSEGV] [ADDR:0x0] [PC:0x97E6B5C] [SI_KERNEL(general_protection)] []
ORA-00600: internal error code, arguments: [17182], [0x7F96BDA2AA70], [], [], [], [], [], [], [], [], [], []
Incident details in: /u01/app/diag/rdbms/xifenfei/xifenfei/incident/incdir_592119/xifenfei_pmon_7690_i592119.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Tue May 22 09:08:45 2018
Dumping diagnostic data in directory=[cdmp_20180522090845], requested by (instance=1, osid=7690 (PMON)), summary=[incident=592118].
Tue May 22 09:08:47 2018
Sweep [inc][592824]: completed
Sweep [inc][592823]: completed
Sweep [inc][592119]: completed
Sweep [inc][592118]: completed
Sweep [inc2][592824]: completed
Sweep [inc2][592119]: completed
Sweep [inc2][592118]: completed
Tue May 22 09:08:47 2018
ARC2 (ospid: 7834): terminating the instance due to error 472
Instance terminated by ARC2, pid = 7834

无法正常open

Completed: ALTER DATABASE   MOUNT
Tue May 22 09:26:44 2018
ALTER DATABASE OPEN
Beginning crash recovery of 1 threads
 parallel recovery started with 15 processes
Started redo scan
Completed redo scan
 read 12232 KB redo, 4787 data blocks need recovery
Started redo application at
 Thread 1: logseq 90199, block 233846
Recovery of Online Redo Log: Thread 1 Group 3 Seq 90199 Reading mem 0
  Mem# 0: +DATA/xifenfei/onlinelog/group_3.262.887465049
Completed redo application of 10.34MB
Completed crash recovery at
 Thread 1: logseq 90199, block 258311, scn 161030851622
 4787 data blocks read, 4787 data blocks written, 12232 redo k-bytes read
LGWR: STARTING ARCH PROCESSES
Tue May 22 09:26:45 2018
ARC0 started with pid=48, OS id=18632 
Tue May 22 09:26:46 2018
ARC0: Archival started
LGWR: STARTING ARCH PROCESSES COMPLETE
ARC0: STARTING ARCH PROCESSES
Thread 1 advanced to log sequence 90200 (thread open)
Tue May 22 09:26:46 2018
ARC1 started with pid=49, OS id=18636 
Tue May 22 09:26:46 2018
ARC2 started with pid=50, OS id=18640 
Tue May 22 09:26:46 2018
ARC3 started with pid=51, OS id=18644 
ARC1: Archival started
ARC2: Archival started
ARC1: Becoming the 'no FAL' ARCH
ARC1: Becoming the 'no SRL' ARCH
ARC2: Becoming the heartbeat ARCH
Thread 1 opened at log sequence 90200
  Current log# 5 seq# 90200 mem# 0: +DATA/xifenfei/onlinelog/group_5.280.887465135
Successful open of redo thread 1
MTTR advisory is disabled because FAST_START_MTTR_TARGET is not set
Tue May 22 09:26:46 2018
SMON: enabling cache recovery
[18512] Successfully onlined Undo Tablespace 2.
Undo initialization finished serial:0 start:2704839736 end:2704839986 diff:250 (2 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 AL32UTF8
Archived Log entry 84347 added for thread 1 sequence 90199 ID 0x103430df dest 1:
No Resource Manager plan active
replication_dependency_tracking turned off (no async multimaster replication found)
Tue May 22 09:26:47 2018
Errors in file /u01/app/diag/rdbms/xifenfei/xifenfei/trace/xifenfei_p019_18664.trc  (incident=624628):
ORA-00600: internal error code, arguments: [17182], [0x7F7A4A50DBF8], [], [], [], [], [], [], [], [], [], []
Incident details in: /u01/app/diag/rdbms/xifenfei/xifenfei/incident/incdir_624628/xifenfei_p019_18664_i624628.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
ARC3: Archival started
ARC0: STARTING ARCH PROCESSES COMPLETE
Starting background process QMNC
Tue May 22 09:26:48 2018
QMNC started with pid=71, OS id=18737 
Exception [type: SIGSEGV, SI_KERNEL(general_protection)] [ADDR:0x0] [PC:0x97ECF6C, kghalo()+570] [flags: 0x0, count: 1]
Errors in file /u01/app/diag/rdbms/xifenfei/xifenfei/trace/xifenfei_p019_18664.trc  (incident=624629):
ORA-00600: internal error code, arguments: [17182], [0x7F7A4A50DBF8], [], [], [], [], [], [], [], [], [], []
Incident details in: /u01/app/diag/rdbms/xifenfei/xifenfei/incident/incdir_624629/xifenfei_p019_18664_i624629.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Tue May 22 09:26:49 2018
Tue May 22 09:26:50 2018
Starting background process EMNC
Tue May 22 09:26:50 2018
EMNC started with pid=76, OS id=18814 
Exception [type: SIGSEGV, SI_KERNEL(general_protection)] [ADDR:0x0] [PC:0x97ECF6C, kghalo()+570] [flags: 0x0, count: 2]
Completed: ALTER DATABASE OPEN
Errors in file /u01/app/diag/rdbms/xifenfei/xifenfei/trace/xifenfei_p019_18664.trc  (incident=624630):
ORA-07445: exception encountered: core dump [kghalo()+570] [SIGSEGV] [ADDR:0x0] [PC:0x97ECF6C] [SI_KERNEL(general_protection)] []
ORA-07445: exception encountered: core dump [kghalo()+570] [SIGSEGV] [ADDR:0x0] [PC:0x97ECF6C] [SI_KERNEL(general_protection)] []
ORA-00600: internal error code, arguments: [17182], [0x7F7A4A50DBF8], [], [], [], [], [], [], [], [], [], []
Incident details in: /u01/app/diag/rdbms/xifenfei/xifenfei/incident/incdir_624630/xifenfei_p019_18664_i624630.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Tue May 22 09:27:01 2018
Block recovery from logseq 90200, block 59 to scn 161030851961
Recovery of Online Redo Log: Thread 1 Group 5 Seq 90200 Reading mem 0
  Mem# 0: +DATA/xifenfei/onlinelog/group_5.280.887465135
Block recovery stopped at EOT rba 90200.935.16
Block recovery completed at rba 90200.935.16, scn 37.2117062009
Starting background process CJQ0
Tue May 22 09:27:01 2018
SMON: slave died unexpectedly, downgrading to serial recovery
Tue May 22 09:27:01 2018
CJQ0 started with pid=56, OS id=18922 
Exception [type: SIGSEGV, SI_KERNEL(general_protection)] [ADDR:0x0] [PC:0x9823AA3, kghalo()+567] [flags: 0x0, count: 1]
Errors in file /u01/app/diag/rdbms/posdg/posdg/trace/posdg_p019_11656.trc  (incident=1136658):
ORA-07445: exception encountered: core dump [kghalo()+567] [SIGSEGV] [ADDR:0x0] [PC:0x9823AA3] [SI_KERNEL(general_protection)] []
ORA-00600: internal error code, arguments: [17182], [0x7F813F61DBF8], [], [], [], [], [], [], [], [], [], []
Incident details in: /u01/app/diag/rdbms/posdg/posdg/incident/incdir_1136658/posdg_p019_11656_i1136658.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
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 /u01/app/diag/rdbms/posdg/posdg/trace/posdg_ora_10925.trc:
ORA-00600: internal error code, arguments: [2252], [49410], [2147581953], [3726], [1009467392], [], [], [], [], [], [], []
Errors in file /u01/app/diag/rdbms/posdg/posdg/trace/posdg_ora_10925.trc:
ORA-00600: internal error code, arguments: [2252], [49410], [2147581953], [3726], [1009467392], [], [], [], [], [], [], []
Errors in file /u01/app/diag/rdbms/xifenfei/xifenfei/trace/xifenfei_smon_18434.trc  (incident=624292):
ORA-00600: internal error code, arguments: [17182], [0x7F7488BDD7A0], [], [], [], [], [], [], [], [], [], []
Incident details in: /u01/app/diag/rdbms/xifenfei/xifenfei/incident/incdir_624292/xifenfei_smon_18434_i624292.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Exception [type: SIGSEGV, SI_KERNEL(general_protection)] [ADDR:0x0] [PC:0x97E64D7, kghalf()+537] [flags: 0x0, count: 1]
Errors in file /u01/app/diag/rdbms/xifenfei/xifenfei/trace/xifenfei_smon_18434.trc  (incident=624293):
ORA-07445: exception encountered: core dump [kghalf()+537] [SIGSEGV] [ADDR:0x0] [PC:0x97E64D7] [SI_KERNEL(general_protection)] []
ORA-00600: internal error code, arguments: [17182], [0x7F7488BDD7A0], [], [], [], [], [], [], [], [], [], []
Incident details in: /u01/app/diag/rdbms/xifenfei/xifenfei/incident/incdir_624293/xifenfei_smon_18434_i624293.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Tue May 22 09:27:03 2018
Dumping diagnostic data in directory=[cdmp_20180522092703], requested by (instance=1, osid=18434 (SMON)), summary=[incident=624292].
PMON (ospid: 18383): terminating the instance due to error 474
Tue May 22 09:27:05 2018
opiodr aborting process unknown ospid (18839) as a result of ORA-1092
System state dump requested by (instance=1, osid=18383 (PMON)), summary=[abnormal instance termination].
System State dumped to trace file /u01/app/diag/rdbms/xifenfei/xifenfei/trace/xifenfei_diag_18402_20180522092705.trc
Tue May 22 09:27:05 2018
ORA-1092 : opitsk aborting process
Instance terminated by PMON, pid = 18383

通过对于启动过程的观察,比较明显,由于数据库无法正常回滚,导致smon进程异常,从而使得数据库无法启动成功.恢复方法比较简单,就是对异常事务进行提交或者跳过即可

发表在 ORA-xxxxx, Oracle备份恢复 | 标签为 , , , , , | 评论关闭

ORA-19821故障分析

发表于 2018 年 5 月 7 日 由 惜分飞

数据库报错
数据库启动报ORA-00283和ORA-19821错

SQL> recover database;
ORA-00283: recovery session canceled due to errors
ORA-19821: an intentionally corrupt log file was found


SQL> recover datafile 1;
ORA-00283: recovery session canceled due to errors
ORA-19821: an intentionally corrupt log file was found

Thu May 03 12:06:51 2018
Recovery of Online Redo Log: Thread 1 Group 1 Seq 1 Reading mem 0
  Mem# 0: D:\APP\SOHTDB\ORADATA\xifenfei\REDO01.LOG
Media Recovery failed with error 19821
Errors in file d:\app\sohtdb\diag\rdbms\xifenfei\xifenfei\trace\xifenfei_pr00_660.trc:
ORA-00283: recovery session canceled due to errors
ORA-19821: an intentionally corrupt log file was found
Slave exiting with ORA-283 exception
Errors in file d:\app\sohtdb\diag\rdbms\xifenfei\xifenfei\trace\xifenfei_pr00_660.trc:
ORA-00283: recovery session canceled due to errors
ORA-19821: an intentionally corrupt log file was found
ORA-283 signalled during: ALTER DATABASE RECOVER  database  ...

ORA-19821报错原因
这个错误相对比较少见，查询mos，由于设置了_disable_logging = TRUE导致该问题
ORA-19821

检查alert日志,_disable_logging参数确实被认为设置为true了.
_disable_logging
解决方法
根据官方的描述,这样的情况无法常规恢复,但是我们知道设置这个参数是为了不产生日志,因此出现这种情况,只能通过隐含参数,禁止数据库进行实例恢复,强制打开数据库.在这样的过程中非常容易遭遇类似ORA-600 2662的错误.
_disable_logging_mos
设置这个参数是为了不产生日志，当数据库非干净关闭(主机断电，数据库crash，shutdown abort等）,就非常可能导致数据库无法正常启动.***千不可万不能在生产环境中设置_disable_logging = TRUE***
参考文档:Ora-19821 during the recovery (Doc ID 1217143.1)
Init.ora Parameter “_DISABLE_LOGGING” [Hidden] Reference Note (Doc ID 29552.1)

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