标签归档:ORA-00742

19c非归档数据库断电导致ORA-00742故障恢复

客户一套运行在win平台,非归档的19c数据库,由于异常断电导致数据库启动报ORA-01113,进行recover操作之后报ORA-00742
ora-00742


open之时alert日志报错信息

2025-01-18T00:17:52.205669+08:00
alter database open
2025-01-18T00:17:53.417839+08:00
Ping without log force is disabled:
  instance mounted in exclusive mode.
2025-01-18T00:17:53.436858+08:00
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\his\his\trace\his_ora_4428.trc:
ORA-01113: 文件 1 需要介质恢复
ORA-01110: 数据文件 1: 'D:\APP\ADMINISTRATOR\ORADATA\HIS\SYSTEM01.DBF'
2025-01-18T00:17:53.442863+08:00
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\his\his\trace\his_ora_4428.trc:
ORA-01113: 文件 1 需要介质恢复
ORA-01110: 数据文件 1: 'D:\APP\ADMINISTRATOR\ORADATA\HIS\SYSTEM01.DBF'
ORA-1113 signalled during: alter database open...

recover database 数据库的alert日志报错Media Recovery failed with error 742和
ORA-01110 ORA-01208等错误

2025-01-18T00:20:10.196227+08:00
ALTER DATABASE RECOVER  database  
2025-01-18T00:20:10.221244+08:00
Media Recovery Start
 Started logmerger process
2025-01-18T00:20:10.459413+08:00
WARNING! Recovering data file 1 from a fuzzy backup. It might be an online
backup taken without entering the begin backup command.
WARNING! Recovering data file 3 from a fuzzy backup. It might be an online
backup taken without entering the begin backup command.
WARNING! Recovering data file 4 from a fuzzy backup. It might be an online
backup taken without entering the begin backup command.
WARNING! Recovering data file 7 from a fuzzy backup. It might be an online
backup taken without entering the begin backup command.
WARNING! Recovering data file 60 from a fuzzy backup. It might be an online
backup taken without entering the begin backup command.
WARNING! Recovering data file 64 from a fuzzy backup. It might be an online
backup taken without entering the begin backup command.
WARNING! Recovering data file 65 from a fuzzy backup. It might be an online
backup taken without entering the begin backup command.
WARNING! Recovering data file 66 from a fuzzy backup. It might be an online
backup taken without entering the begin backup command.
WARNING! Recovering data file 67 from a fuzzy backup. It might be an online
backup taken without entering the begin backup command.
2025-01-18T00:20:10.599512+08:00
Parallel Media Recovery started with 12 slaves
2025-01-18T00:20:10.664559+08:00
Recovery of Online Redo Log: Thread 1 Group 3 Seq 2097 Reading mem 0
  Mem# 0: D:\APP\ADMINISTRATOR\ORADATA\HIS\REDO03.LOG
2025-01-18T00:20:12.644962+08:00
Media Recovery failed with error 742
2025-01-18T00:20:12.759043+08:00
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\his\his\trace\his_mz00_4036.trc:
ORA-01110: 数据文件 1: 'D:\APP\ADMINISTRATOR\ORADATA\HIS\SYSTEM01.DBF'
ORA-01208: 数据文件是旧的版本 - 不能访问当前版本
2025-01-18T00:20:13.135309+08:00
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\his\his\trace\his_mz00_4036.trc:
ORA-01110: 数据文件 3: 'D:\APP\ADMINISTRATOR\ORADATA\HIS\SYSAUX01.DBF'
ORA-01208: 数据文件是旧的版本 - 不能访问当前版本
2025-01-18T00:20:13.455536+08:00
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\his\his\trace\his_mz00_4036.trc:
ORA-01110: 数据文件 4: 'D:\APP\ADMINISTRATOR\ORADATA\HIS\UNDOTBS01.DBF'
ORA-01208: 数据文件是旧的版本 - 不能访问当前版本
2025-01-18T00:20:14.408212+08:00
ORA-283 signalled during: ALTER DATABASE RECOVER  database  ...

尝试recover datafile 1

SQL> RECOVER DATAFILE 1;
ORA-00283: 恢复会话因错误而取消
ORA-00742: 日志读取在线程 1 序列 2097 块 296728 中检测到写入丢失情况
ORA-00312: 联机日志 3 线程 1: 'D:\APP\ADMINISTRATOR\ORADATA\HIS\REDO03.LOG'

对于这种情况,比较明显是redo文件有写丢失,导致数据库无法正常的应用redo日志进行恢复,从而无法正常open.这种情况,只能只能选择屏蔽一致性,尝试强制打开数据库

C:\Users\Administrator\Desktop\check_db>sqlplus / as sysdba

SQL*Plus: Release 19.0.0.0.0 - Production on Sat Jan 18 00:59:28 2025
Version 19.3.0.0.0

Copyright (c) 1982, 2019, Oracle.  All rights reserved.


Connected to:
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.3.0.0.0

SQL> recover database using backup controlfile until cancel;
ORA-00279: ?? 10103231167 (? 01/17/2025 09:20:12 ??) ???? 1 ????
ORA-00289: ??:
D:\APP\ADMINISTRATOR\PRODUCT\19.0.0\DBHOME_1\RDBMS\ARC0000002097_1079211060.0001
ORA-00280: ?? 10103231167 (???? 1) ??? #2097 ?


指定日志: {<RET>=suggested | filename | AUTO | CANCEL}
D:\APP\ADMINISTRATOR\ORADATA\HIS\REDO03.LOG
ORA-00283: ??????????????????????????????
ORA-00742: ????????????????????? 1 ?????? 2097 ??? 296960
??????????????????????????????
ORA-00334: ????????????: 'D:\APP\ADMINISTRATOR\ORADATA\HIS\REDO03.LOG'


ORA-01112: ???????


SQL> alter database open resetlogs;

Database altered.

alert日志对应的信息

2025-01-18T01:00:15.756033+08:00
alter database open resetlogs
2025-01-18T01:00:15.903141+08:00
RESETLOGS is being done without consistancy checks. This may result
in a corrupted database. The database should be recreated.
RESETLOGS after incomplete recovery UNTIL CHANGE 10103247614 time 
.... (PID:4824): Clearing online redo logfile 1 D:\APP\ADMINISTRATOR\ORADATA\HIS\REDO01.LOG
.... (PID:4824): Clearing online redo logfile 2 D:\APP\ADMINISTRATOR\ORADATA\HIS\REDO02.LOG
.... (PID:4824): Clearing online redo logfile 3 D:\APP\ADMINISTRATOR\ORADATA\HIS\REDO03.LOG
Clearing online log 1 of thread 1 sequence number 2098
Clearing online log 2 of thread 1 sequence number 2096
Clearing online log 3 of thread 1 sequence number 2097
2025-01-18T01:00:19.381697+08:00
.... (PID:4824): Clearing online redo logfile 1 complete
.... (PID:4824): Clearing online redo logfile 2 complete
.... (PID:4824): Clearing online redo logfile 3 complete
Resetting resetlogs activation ID 3599991024 (0xd69380f0)
Online log D:\APP\ADMINISTRATOR\ORADATA\HIS\REDO01.LOG: Thread 1 Group 1 was previously cleared
Online log D:\APP\ADMINISTRATOR\ORADATA\HIS\REDO02.LOG: Thread 1 Group 2 was previously cleared
Online log D:\APP\ADMINISTRATOR\ORADATA\HIS\REDO03.LOG: Thread 1 Group 3 was previously cleared
2025-01-18T01:00:19.550821+08:00
Setting recovery target incarnation to 2
2025-01-18T01:00:20.418458+08:00
Ping without log force is disabled:
  instance mounted in exclusive mode.
Initializing SCN for created control file
Database SCN compatibility initialized to 3
2025-01-18T01:00:25.466167+08:00
Endian type of dictionary set to little
2025-01-18T01:00:25.476174+08:00
Assigning activation ID 3711463735 (0xdd387137)
2025-01-18T01:00:25.491185+08:00
TT00 (PID:3332): Gap Manager starting
2025-01-18T01:00:25.507197+08:00
Redo log for group 1, sequence 1 is not located on DAX storage
Thread 1 opened at log sequence 1
  Current log# 1 seq# 1 mem# 0: D:\APP\ADMINISTRATOR\ORADATA\HIS\REDO01.LOG
Successful open of redo thread 1
2025-01-18T01:00:26.162679+08:00
MTTR advisory is disabled because FAST_START_MTTR_TARGET is not set
stopping change tracking
2025-01-18T01:00:26.183694+08:00
TT03 (PID:1896): Sleep 5 seconds and then try to clear SRLs in 2 time(s)
2025-01-18T01:00:27.465636+08:00
Undo initialization recovery: err:0 start: 3158125 end: 3158390 diff: 265 ms (0.3 seconds)
Undo initialization online undo segments: err:0 start: 3158390 end: 3158390 diff: 0 ms (0.0 seconds)
Undo initialization finished serial:0 start:3158125 end:3158406 diff:281 ms (0.3 seconds)
Dictionary check beginning
Tablespace 'TEMP' #3 found in data dictionary,
but not in the controlfile. Adding to controlfile.
Dictionary check complete
Verifying minimum file header compatibility for tablespace encryption..
Verifying file header compatibility for tablespace encryption completed for pdb 0
Database Characterset is AL32UTF8
2025-01-18T01:00:28.790609+08:00
No Resource Manager plan active
2025-01-18T01:00:30.086561+08:00
replication_dependency_tracking turned off (no async multimaster replication found)
2025-01-18T01:00:31.185369+08:00
TT03 (PID:1896): Sleep 10 seconds and then try to clear SRLs in 3 time(s)
2025-01-18T01:00:31.536626+08:00
LOGSTDBY: Validating controlfile with logical metadata
LOGSTDBY: Validation complete
Starting background process AQPC
2025-01-18T01:00:31.638701+08:00
AQPC started with pid=38, OS id=4340 
2025-01-18T01:00:32.717495+08:00
Starting background process CJQ0
2025-01-18T01:00:32.726501+08:00
CJQ0 started with pid=40, OS id=1236 
Completed: alter database open resetlogs

数据库没有明显报错,直接resetlogs成功,直接逻辑导出数据,导入新库,完成本次恢复工作

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ORA-00742 ORA-00312 恢复

有客户反馈,断电之后数据库启动报ORA-00742和ORA-00312,无法正常open
ORA-742-ORA-312


我们远程上去尝试open库结果也报同样错误

[oracle@oldhis oradata]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Wed Apr 10 09:40:03 2024

Copyright (c) 1982, 2013, Oracle.  All rights reserved.


Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> recover database;
Media recovery complete.

SQL> alter database open;
alter database open
*
ERROR at line 1:
ORA-00742: Log read detects lost write in thread %d sequence %d block %d
ORA-00312: online log 3 thread 1: '/oradata/shrdh/redo03.log'


SQL> select group#,status from v$log;

    GROUP# STATUS
---------- ----------------
         1 INACTIVE
         3 CURRENT
         2 INACTIVE

因为recover已经成功,但是依旧报ORA-742错误,尝试查询scn相关信息

SQL> set pages 10000
set numw 16
SELECT status,
checkpoint_change#,
checkpoint_time,last_change#,
count(*) ROW_NUM
FROM v$datafile
GROUP BY status, checkpoint_change#, checkpoint_time,last_change#
ORDER BY status, checkpoint_change#, checkpoint_time;


set numw 16
col CHECKPOINT_TIME for a40
set lines 150
set pages 1000
SELECT status,
to_char(checkpoint_time,'yyyy-mm-dd hh24:mi:ss') checkpoint_time,FUZZY,checkpoint_change#,
count(*) ROW_NUM
FROM v$datafile_header
GROUP BY status, checkpoint_change#, to_char(checkpoint_time,'yyyy-mm-dd hh24:mi:ss'),fuzzy
ORDER BY status, checkpoint_change#, checkpoint_time;

SQL> SQL>   2    3    4    5    6    7  
STATUS  CHECKPOINT_CHANGE# CHECKPOIN     LAST_CHANGE#          ROW_NUM
------- ------------------ --------- ---------------- ----------------
ONLINE          1279351848 26-MAR-24       1279351848               19
SYSTEM          1279351848 26-MAR-24       1279351848                1

SQL> SQL> SQL> SQL> SQL> SQL> SQL>   2    3    4    5    6  
STATUS  CHECKPOINT_TIME                          FUZ CHECKPOINT_CHANGE#          ROW_NUM
------- ---------------------------------------- --- ------------------ ----------------
ONLINE  2024-03-26 00:05:45                      NO          1279351848               20

基于这样的情况,我们判断数据库直接open成功

SQL> recover database using backup controlfile;
ORA-00279: change 1279351848 generated at 03/26/2024 00:05:45 needed for thread 1
ORA-00289: suggestion : /oradata/arch/shrdh/shrdh_1_12984_974767526.arc
ORA-00280: change 1279351848 for thread 1 is in sequence #12984


Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
/oradata/shrdh/redo03.log
Log applied.
Media recovery complete.
SQL> alter database open resetlogs;

Database altered.

后面比较不幸,数据库报ORA-600 4194错误导致数据库异常

Wed Apr 10 09:43:08 2024
ALTER DATABASE RECOVER  database using backup controlfile  
Media Recovery Start
 started logmerger process
Parallel Media Recovery started with 4 slaves
ORA-279 signalled during: ALTER DATABASE RECOVER  database using backup controlfile  ...
Wed Apr 10 09:43:24 2024
ALTER DATABASE RECOVER    LOGFILE '/oradata/shrdh/redo03.log'  
Media Recovery Log /oradata/shrdh/redo03.log
Media Recovery Complete (shrdh)
Completed: ALTER DATABASE RECOVER    LOGFILE '/oradata/shrdh/redo03.log'  
alter database open resetlogs
RESETLOGS after complete recovery through change 1279351849
Clearing online redo logfile 1 /oradata/shrdh/redo01.log
Clearing online log 1 of thread 1 sequence number 12982
Clearing online redo logfile 1 complete
Clearing online redo logfile 2 /oradata/shrdh/redo02.log
Clearing online log 2 of thread 1 sequence number 12983
Clearing online redo logfile 2 complete
Clearing online redo logfile 3 /oradata/shrdh/redo03.log
Clearing online log 3 of thread 1 sequence number 12984
Clearing online redo logfile 3 complete
Resetting resetlogs activation ID 1820377766 (0x6c80c2a6)
Online log /oradata/shrdh/redo01.log: Thread 1 Group 1 was previously cleared
Online log /oradata/shrdh/redo02.log: Thread 1 Group 2 was previously cleared
Online log /oradata/shrdh/redo03.log: Thread 1 Group 3 was previously cleared
Wed Apr 10 09:43:34 2024
Setting recovery target incarnation to 2
Wed Apr 10 09:43:34 2024
Assigning activation ID 2011515185 (0x77e54931)
Thread 1 opened at log sequence 1
  Current log# 1 seq# 1 mem# 0: /oradata/shrdh/redo01.log
Successful open of redo thread 1
Wed Apr 10 09:43:34 2024
MTTR advisory is disabled because FAST_START_MTTR_TARGET is not set
Wed Apr 10 09:43:34 2024
SMON: enabling cache recovery
[25089] Successfully onlined Undo Tablespace 2.
Undo initialization finished serial:0 start:1273646224 end:1273646494 diff:270 (2 seconds)
Dictionary check beginning
Dictionary check complete
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
replication_dependency_tracking turned off (no async multimaster replication found)
Errors in file /u01/app/oracle/diag/rdbms/shrdh/shrdh/trace/shrdh_smon_21704.trc  (incident=84296):
ORA-00600: internal error code, arguments: [4194], [], [], [], [], [], [], [], [], [], [], []
Incident details in: /u01/app/oracle/diag/rdbms/shrdh/shrdh/incident/incdir_84296/shrdh_smon_21704_i84296.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Starting background process QMNC
Wed Apr 10 09:43:35 2024
QMNC started with pid=24, OS id=25340 
LOGSTDBY: Validating controlfile with logical metadata
LOGSTDBY: Validation complete
Block recovery from logseq 1, block 61 to scn 1279351933
Recovery of Online Redo Log: Thread 1 Group 1 Seq 1 Reading mem 0
  Mem# 0: /oradata/shrdh/redo01.log
Block recovery stopped at EOT rba 1.99.16
Block recovery completed at rba 1.99.16, scn 0.1279351933
Block recovery from logseq 1, block 61 to scn 1279351919
Recovery of Online Redo Log: Thread 1 Group 1 Seq 1 Reading mem 0
  Mem# 0: /oradata/shrdh/redo01.log
Block recovery completed at rba 1.87.16, scn 0.1279351922
Errors in file /u01/app/oracle/diag/rdbms/shrdh/shrdh/trace/shrdh_smon_21704.trc:
ORA-01595: error freeing extent (2) of rollback segment (7))
ORA-00600: internal error code, arguments: [4194], [], [], [], [], [], [], [], [], [], [], []
Completed: alter database open resetlogs
Wed Apr 10 09:43:37 2024
Errors in file /u01/app/oracle/diag/rdbms/shrdh/shrdh/trace/shrdh_m000_25343.trc  (incident=84392):
ORA-00600: internal error code, arguments: [4194], [], [], [], [], [], [], [], [], [], [], []
Incident details in: /u01/app/oracle/diag/rdbms/shrdh/shrdh/incident/incdir_84392/shrdh_m000_25343_i84392.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Wed Apr 10 09:43:37 2024
Starting background process CJQ0
Wed Apr 10 09:43:37 2024
CJQ0 started with pid=29, OS id=25357 
Starting background process SMCO
Wed Apr 10 09:43:37 2024
SMCO started with pid=30, OS id=25360 
Wed Apr 10 09:43:38 2024
Flush retried for xcb 0x115b42d28, pmd 0x1148dea70
Block recovery from logseq 1, block 61 to scn 1279351933
Recovery of Online Redo Log: Thread 1 Group 1 Seq 1 Reading mem 0
  Mem# 0: /oradata/shrdh/redo01.log
Block recovery completed at rba 1.99.16, scn 0.1279351934
Errors in file /u01/app/oracle/diag/rdbms/shrdh/shrdh/trace/shrdh_pmon_21679.trc  (incident=84208):
ORA-00600: internal error code, arguments: [4194], [], [], [], [], [], [], [], [], [], [], []
Incident details in: /u01/app/oracle/diag/rdbms/shrdh/shrdh/incident/incdir_84208/shrdh_pmon_21679_i84208.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 /u01/app/oracle/diag/rdbms/shrdh/shrdh/trace/shrdh_pmon_21679.trc:
ORA-00600: internal error code, arguments: [4194], [], [], [], [], [], [], [], [], [], [], []
PMON (ospid: 21679): terminating the instance due to error 472
Wed Apr 10 09:43:47 2024
Instance terminated by PMON, pid = 21679

报错比较明显,对undo进行处理即可.

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Control file mount id mismatch!故障处理

通过沟通确认客户由于存储双活异常,业务运行在主存储上,另外一套存储修复之后,进行存储双活同步,结果在这个过程中由于遭遇Control file mount id mismatch! 导致数据库crash了

2023-05-03T20:21:07.446873+08:00
Archived Log entry 491897 added for T-1.S-246903 ID 0x97d92f0b LAD:1
2023-05-03T20:47:53.902701+08:00
Error: 2141
Control file mount id mismatch!
fhmid: 2592441863, SGA mid: 2624617448
Requesting DIAG on each RAC instance to dump the control file header block
2023-05-03T20:47:55.906490+08:00
Errors in file /opt/rac/oracle/diag/rdbms/xff/xff1/trace/xff1_rms0_20989.trc:
2023-05-03T20:47:56.521500+08:00
RMS0 (ospid: 20989): terminating the instance
2023-05-03T20:47:56.610656+08:00
System state dump requested by (instance=1, osid=20989 (RMS0)), summary=[abnormal instance termination].
System State dumped to trace file /opt/rac/oracle/diag/rdbms/xff/xff1/trace/xff1_diag_20912_20230503204756.trc
2023-05-03T20:47:58.480397+08:00
License high water mark = 395
2023-05-03T20:48:02.600203+08:00
Instance terminated by RMS0, pid = 20989
2023-05-03T20:48:02.601563+08:00
Warning: 2 processes are still attach to shmid 393226:
 (size: 28672 bytes, creator pid: 19941, last attach/detach pid: 20912)
2023-05-03T20:48:03.481726+08:00
USER (ospid: 967): terminating the instance
2023-05-03T20:48:03.483351+08:00
Instance terminated by USER, pid = 967

节点自动重启报错ORA-600 kccsbck_first

2023-05-03T20:48:34.870435+08:00
NOTE: ASMB mounting group 2 (FRA)
NOTE: ASM background process initiating disk discovery for grp 2 (reqid:0)
NOTE: Assigning number (2,1) to disk (/dev/asm_data0g)
NOTE: Assigning number (2,0) to disk (/dev/asm_data0f)
SUCCESS: mounted group 2 (FRA)
NOTE: grp 2 disk 1: FRA_0001 path:/dev/asm_data0g
NOTE: grp 2 disk 0: FRA_0000 path:/dev/asm_data0f
2023-05-03T20:48:34.919965+08:00
NOTE: dependency between database xff and diskgroup resource ora.FRA.dg is established
2023-05-03T20:48:38.983416+08:00
Errors in file /opt/rac/oracle/diag/rdbms/xff/xff1/trace/xff1_ora_2436.trc  (incident=1333249):
ORA-00600: ??????, ??: [kccsbck_first], [1], [2624617448], [], [], [], [], [], [], [], [], []
Incident details in: /opt/rac/oracle/diag/rdbms/xff/xff1/incident/incdir_1333249/xff1_ora_2436_i1333249.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
ORA-600 signalled during: ALTER DATABASE MOUNT /* db agent *//* {0:8:116} */...

再次重启数据库报错ORA-00742 ORA-00312

2023-05-04T08:18:59.635790+08:00
Aborting crash recovery due to error 742
2023-05-04T08:18:59.635897+08:00
Errors in file /opt/rac/oracle/diag/rdbms/xff/xff1/trace/xff1_ora_80855.trc:
ORA-00742: ??????? 2 ?? 244996 ? 8262 ??????????
ORA-00312: ???? 7 ?? 2: '+FRA/xff/ONLINELOG/group_7.446.1059323695'
ORA-00312: ???? 7 ?? 2: '+DATA/xff/ONLINELOG/group_7.272.1059323695'
Abort recovery for domain 0, flags 4
2023-05-04T08:18:59.647994+08:00
Errors in file /opt/rac/oracle/diag/rdbms/xff/xff1/trace/xff1_ora_80855.trc:
ORA-00742: ??????? 2 ?? 244996 ? 8262 ??????????
ORA-00312: ???? 7 ?? 2: '+FRA/xff/ONLINELOG/group_7.446.1059323695'
ORA-00312: ???? 7 ?? 2: '+DATA/xff/ONLINELOG/group_7.272.1059323695'
ORA-742 signalled during: ALTER DATABASE OPEN /* db agent *//* {2:37368:2} */...
2023-05-04T08:19:00.820708+08:00
License high water mark = 33
2023-05-04T08:19:00.820936+08:00
USER (ospid: 82788): terminating the instance
2023-05-04T08:19:01.827132+08:00
Instance terminated by USER, pid = 82788

明显数据库在启动的时候做实例恢复,发现redo写丢失,从而引起数据库无法正常open,对于此类故障,处理比较多
ORA-00742 ORA-00312 故障恢复-1
ORA-00742 ORA-00312故障恢复-2
ORA-00742: 日志读取在线程 %d 序列 %d 块 %d 中检测到写入丢失情况

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