分类目录归档：Oracle备份恢复

ORA-600 ksuloget2 恢复

发表于 2023 年 8 月 19 日 由 惜分飞

客户在win 32位的操作系统上调至sga超过2G,数据库运行过程中报ORA-600 ksuloget2错误

Thread 1 cannot allocate new log, sequence 43586
Checkpoint not complete
  Current log# 1 seq# 43585 mem# 0: D:\ORACLE\ORADATA\ORCL\REDO01.LOG
Fri Aug 04 14:57:02 2023
Errors in file d:\oracle\diag\rdbms\orcl\orcl\trace\orcl_ora_42996.trc  (incident=67481):
ORA-00600: 内部错误代码, 参数: [ksuloget2], [0xFEBA6208], [0xFEBA3B08], [500], [0xFEBA622C], [], [], [], [], []
Thread 1 advanced to log sequence 43586 (LGWR switch)
  Current log# 2 seq# 43586 mem# 0: D:\ORACLE\ORADATA\ORCL\REDO02.LOG

重启数据库,进行尝试恢复继续报ORA-600 ksuloget2

Thu Aug 17 17:38:27 2023
ALTER DATABASE RECOVER  database using backup controlfile  
Media Recovery Start
 started logmerger process
Parallel Media Recovery started with 24 slaves
ORA-279 signalled during: ALTER DATABASE RECOVER  database using backup controlfile  ...
Thu Aug 17 17:39:01 2023
ALTER DATABASE RECOVER LOGFILE 'D:\oracle\flash_recovery_area\orcl\ARCHIVELOG\2023_08_04\REDO03.LOG'  
Media Recovery Log D:\oracle\flash_recovery_area\orcl\ARCHIVELOG\2023_08_04\REDO03.LOG
Thu Aug 17 17:39:01 2023
Errors in file d:\oracle\diag\rdbms\orcl\orcl\trace\orcl_pr00_5528.trc  (incident=110724):
ORA-00600: internal error code, arguments: [ksuloget2], [0xFEBA6E38], [0xFEBA3B08], [500], [0xFEBA6E5C], [], [], [], []
ORA-00342: archived log does not have expected resetlogs SCN 685171428
ORA-00334: archived log: 'D:\ORACLE\FLASH_RECOVERY_AREA\ORCL\ARCHIVELOG\2023_08_04\REDO03.LOG'
Errors in file d:\oracle\diag\rdbms\orcl\orcl\trace\orcl_pr00_5528.trc:
ORA-00600: internal error code, arguments: [ksuloget2], [0xFEBA6E38], [0xFEBA3B08], [500], [0xFEBA6E5C], [], [], [], []
ORA-00342: archived log does not have expected resetlogs SCN 685171428
ORA-00334: archived log: 'D:\ORACLE\FLASH_RECOVERY_AREA\ORCL\ARCHIVELOG\2023_08_04\REDO03.LOG'
Errors in file d:\oracle\diag\rdbms\orcl\orcl\trace\orcl_ora_5604.trc  (incident=110709):
ORA-00600: internal error code, arguments: [ksuloget2], [0xFEBA6E38], [0xFEBA3B08], [500], [0xFEBA6E5C], [], [], [], []
ORA-00342: archived log does not have expected resetlogs SCN 685171428
ORA-00334: archived log: 'D:\ORACLE\FLASH_RECOVERY_AREA\ORCL\ARCHIVELOG\2023_08_04\REDO03.LOG'
Incident details in: d:\oracle\diag\rdbms\orcl\orcl\incident\incdir_110709\orcl_ora_5604_i110709.trc
ORA-600 signalled during:ALTER DATABASE RECOVER LOGFILE 'D:\oracle\flash_recovery_area\orcl\2023_08_04\REDO03.LOG'
ALTER DATABASE RECOVER CANCEL 
Errors in file d:\oracle\diag\rdbms\orcl\orcl\trace\orcl_pr00_5528.trc  (incident=110725):
ORA-00600: internal error code, arguments: [ksuloget2], [0xFEBA6E38], [0xFEBA3B08], [500], [0xFEBA6E5C], [], [], [], []
Errors in file d:\oracle\diag\rdbms\orcl\orcl\trace\orcl_pr00_5528.trc  (incident=110726):
ORA-00600: internal error code, arguments: [ksuloget2], [0xFEBA6E38], [0xFEBA3B08], [500], [0xFEBA6E5C], [], [], [], []
ORA-00600: internal error code, arguments: [ksuloget2], [0xFEBA6E38], [0xFEBA3B08], [500], [0xFEBA6E5C], [], [], [], []
Errors in file d:\oracle\diag\rdbms\orcl\orcl\trace\orcl_pr00_5528.trc:
ORA-00600: internal error code, arguments: [ksuloget2], [0xFEBA6E38], [0xFEBA3B08], [500], [0xFEBA6E5C], [], [], [], []
ORA-00600: internal error code, arguments: [ksuloget2], [0xFEBA6E38], [0xFEBA3B08], [500], [0xFEBA6E5C], [], [], [], []
Errors in file d:\oracle\diag\rdbms\orcl\orcl\trace\orcl_pr00_5528.trc  (incident=110727):
ORA-00600: internal error code, arguments: [ksuloget2], [0xFEBA6E38], [0xFEBA3B08], [500], [0xFEBA6E5C], [], [], [], []
ORA-00600: internal error code, arguments: [ksuloget2], [0xFEBA6E38], [0xFEBA3B08], [500], [0xFEBA6E5C], [], [], [], []
ORA-00600: internal error code, arguments: [ksuloget2], [0xFEBA6E38], [0xFEBA3B08], [500], [0xFEBA6E5C], [], [], [], []
Errors in file d:\oracle\diag\rdbms\orcl\orcl\trace\orcl_pr00_5528.trc  (incident=110728):
ORA-00600: internal error code, arguments: [ksuloget2], [0xFEBA6E38], [0xFEBA3B08], [500], [0xFEBA6E5C], [], [], [], []
ORA-00600: internal error code, arguments: [ksuloget2], [0xFEBA6E38], [0xFEBA3B08], [500], [0xFEBA6E5C], [], [], [], []
ORA-00600: internal error code, arguments: [ksuloget2], [0xFEBA6E38], [0xFEBA3B08], [500], [0xFEBA6E5C], [], [], [], []
ORA-00600: internal error code, arguments: [ksuloget2], [0xFEBA6E38], [0xFEBA3B08], [500], [0xFEBA6E5C], [], [], [], []
Errors in file d:\oracle\diag\rdbms\orcl\orcl\trace\orcl_ora_5604.trc  (incident=110710):
ORA-00600: internal error code, arguments: [ksuloget2], [0xFEBA6E38], [0xFEBA3B08], [500], [0xFEBA6E5C], [], [], [], []
ORA-00600: internal error code, arguments: [ksuloget2], [0xFEBA6E38], [0xFEBA3B08], [500], [0xFEBA6E5C], [], [], [], []
ORA-00600: internal error code, arguments: [ksuloget2], [0xFEBA6E38], [0xFEBA3B08], [500], [0xFEBA6E5C], [], [], [], []
ORA-00600: internal error code, arguments: [ksuloget2], [0xFEBA6E38], [0xFEBA3B08], [500], [0xFEBA6E5C], [], [], [
Incident details in: d:\oracle\diag\rdbms\orcl\orcl\incident\incdir_110710\orcl_ora_5604_i110710.trc

由于是应用日志失败,屏蔽日志一致性,强制打开数据库,检查数据ok,业务可以直接使用,对于这类问题,官方建议:ORA-600: [Ksuloget2] Hit on Windows When SGA Greater Than 1G (Doc ID 836109.1)
20230819105750

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

Oracle 19C 报ORA-704 ORA-01555故障处理

发表于 2023 年 7 月 30 日 由 惜分飞

异常断电导致数据库无法启动,尝试对数据文件进行recover操作,报ORA-00283 ORA-00742 ORA-00312错误,由于redo写丢失无法正常应用

D:\check_db>sqlplus / as sysdba

SQL*Plus: Release 19.0.0.0.0 - Production on 星期日 7月 30 07:49:19 2023
Version 19.3.0.0.0

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


连接到:
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.3.0.0.0

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 9274 块 18057 中检测到写入丢失情况
ORA-00312: 联机日志 1 线程 1: 'D:\APP\ADMINISTRATOR\ORADATA\XFF\REDO01.LOG'

屏蔽数据一致性,尝试强制打开库,报ORA-00604,ORA-00704,ORA-01555错误

SQL> alter database open resetlogs;
alter database open resetlogs
*
第 1 行出现错误:
ORA-00603: ORACLE server session terminated by fatal error
ORA-01092: ORACLE instance terminated. Disconnection forced
ORA-00704: bootstrap process failure
ORA-00704: bootstrap process failure
ORA-00604: error occurred at recursive SQL level 1
ORA-01555: snapshot too old: rollback segment number 9 with name
"_SYSSMU9_4165470211$" too small
进程 ID: 4036
会话 ID: 2277 序列号: 40707

alert日志对应错误

2023-07-30T06:54:43.457383+08:00
.... (PID:5836): Clearing online redo logfile 1 complete
.... (PID:5836): Clearing online redo logfile 2 complete
.... (PID:5836): Clearing online redo logfile 3 complete
Resetting resetlogs activation ID 3572089731 (0xd4e9c383)
Online log D:\APP\ADMINISTRATOR\ORADATA\XFF\REDO01.LOG: Thread 1 Group 1 was previously cleared
Online log D:\APP\ADMINISTRATOR\ORADATA\XFF\REDO02.LOG: Thread 1 Group 2 was previously cleared
Online log D:\APP\ADMINISTRATOR\ORADATA\XFF\REDO03.LOG: Thread 1 Group 3 was previously cleared
2023-07-30T06:54:43.863676+08:00
Setting recovery target incarnation to 2
2023-07-30T06:54:44.816771+08:00
Ping without log force is disabled:
  instance mounted in exclusive mode.
Endian type of dictionary set to little
2023-07-30T06:54:44.957395+08:00
Assigning activation ID 3664275149 (0xda6866cd)
2023-07-30T06:54:44.957395+08:00
TT00 (PID:4640): Gap Manager starting
2023-07-30T06:54:45.004305+08:00
Redo log for group 1, sequence 1 is not located on DAX storage
2023-07-30T06:54:46.176153+08:00
Thread 1 opened at log sequence 1
  Current log# 1 seq# 1 mem# 0: D:\APP\ADMINISTRATOR\ORADATA\XFF\REDO01.LOG
Successful open of redo thread 1
2023-07-30T06:54:46.191771+08:00
MTTR advisory is disabled because FAST_START_MTTR_TARGET is not set
stopping change tracking
2023-07-30T06:54:46.223036+08:00
TT03 (PID:1816): Sleep 5 seconds and then try to clear SRLs in 2 time(s)
2023-07-30T06:54:46.332398+08:00
ORA-01555 caused by SQL statement below (SQL ID: 4krwuz0ctqxdt, SCN: 
0x0000000017b852a7
):
2023-07-30T06:54:46.332398+08:00
select ctime, mtime, stime from obj$ where obj# = :1
2023-07-30T06:54:46.332398+08:00
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\xff\xff\trace\xff_ora_5836.trc:
ORA-00704: 引导程序进程失败
ORA-00604: 递归 SQL 级别 1 出现错误
ORA-01555: 快照过旧: 回退段号 9 (名称为 "_SYSSMU9_4165470211$") 过小
2023-07-30T06:54:46.332398+08:00
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\xff\xff\trace\xff_ora_5836.trc:
ORA-00704: 引导程序进程失败
ORA-00704: 引导程序进程失败
ORA-00604: 递归 SQL 级别 1 出现错误
ORA-01555: 快照过旧: 回退段号 9 (名称为 "_SYSSMU9_4165470211$") 过小
2023-07-30T06:54:46.348028+08:00
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\xff\xff\trace\xff_ora_5836.trc:
ORA-00704: 引导程序进程失败
ORA-00704: 引导程序进程失败
ORA-00604: 递归 SQL 级别 1 出现错误
ORA-01555: 快照过旧: 回退段号 9 (名称为 "_SYSSMU9_4165470211$") 过小
Error 704 happened during db open, shutting down database
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\xff\xff\trace\xff_ora_5836.trc  (incident=474502):
ORA-00603: ORACLE 服务器会话因致命错误而终止
ORA-01092: ORACLE 实例终止。强制断开连接
ORA-00704: 引导程序进程失败
ORA-00704: 引导程序进程失败
ORA-00604: 递归 SQL 级别 1 出现错误
ORA-01555: 快照过旧: 回退段号 9 (名称为 "_SYSSMU9_4165470211$") 过小
Incident details in: D:\APP\ADMINISTRATOR\diag\rdbms\xff\xff\incident\incdir_474502\xff_ora_5836_i474502.trc
2023-07-30T06:54:47.785549+08:00
opiodr aborting process unknown ospid (5836) as a result of ORA-603
2023-07-30T06:54:47.816792+08:00
ORA-603 : opitsk aborting process
License high water mark = 6
USER (ospid: (prelim)): terminating the instance due to ORA error

这类错误比较常见,参考以前类似恢复:
在数据库open过程中常遇到ORA-01555汇总
数据库open过程遭遇ORA-1555对应sql语句补充
Oracle Recovery Tools恢复—ORA-00704 ORA-01555故障
使用_allow_resetlogs_corruption导致ORA-00704/ORA-01555故障
对于本次故障,通过Oracle Recovery Tools工具快速处理
patch

open数据库成功

SQL> alter database open;

数据库已更改。

SQL>
SQL>
SQL> select status,count(1) from v$datafile group by status;

STATUS           COUNT(1)
-------------- ----------
SYSTEM                  1
ONLINE                 61
发表在 Oracle备份恢复 | 标签为 , , , | 评论关闭

Exadata磁盘损坏导致磁盘组无法mount恢复（oracle一体机磁盘组异常恢复）

发表于 2023 年 7 月 28 日 由 惜分飞

Oracle Exadata客户,在换盘过程中,cell节点又一块磁盘损坏,导致datac1磁盘组（该磁盘组是normal方式冗余)无法mount

Thu Jul 20 22:01:21 2023
SQL> alter diskgroup datac1 mount force 
NOTE: cache registered group DATAC1 number=1 incarn=0x0728ad12
NOTE: cache began mount (first) of group DATAC1 number=1 incarn=0x0728ad12
NOTE: Assigning number (1,35) to disk (o/192.168.10.9;192.168.10.10/DATAC1_CD_11_dm01celadm03)
NOTE: Assigning number (1,31) to disk (o/192.168.10.9;192.168.10.10/DATAC1_CD_07_dm01celadm03)
NOTE: Assigning number (1,24) to disk (o/192.168.10.9;192.168.10.10/DATAC1_CD_00_dm01celadm03)
NOTE: Assigning number (1,25) to disk (o/192.168.10.9;192.168.10.10/DATAC1_CD_01_dm01celadm03)
NOTE: Assigning number (1,27) to disk (o/192.168.10.9;192.168.10.10/DATAC1_CD_03_dm01celadm03)
NOTE: Assigning number (1,33) to disk (o/192.168.10.9;192.168.10.10/DATAC1_CD_09_dm01celadm03)
NOTE: Assigning number (1,30) to disk (o/192.168.10.9;192.168.10.10/DATAC1_CD_06_dm01celadm03)
NOTE: Assigning number (1,28) to disk (o/192.168.10.9;192.168.10.10/DATAC1_CD_04_dm01celadm03)
NOTE: Assigning number (1,26) to disk (o/192.168.10.9;192.168.10.10/DATAC1_CD_02_dm01celadm03)
NOTE: Assigning number (1,1) to disk (o/192.168.10.9;192.168.10.10/DATAC1_CD_08_dm01celadm03)
NOTE: Assigning number (1,34) to disk (o/192.168.10.9;192.168.10.10/DATAC1_CD_10_dm01celadm03)
NOTE: Assigning number (1,29) to disk (o/192.168.10.9;192.168.10.10/DATAC1_CD_05_dm01celadm03)
NOTE: Assigning number (1,3) to disk (o/192.168.10.7;192.168.10.8/DATAC1_CD_07_dm01celadm02)
NOTE: Assigning number (1,4) to disk (o/192.168.10.7;192.168.10.8/DATAC1_CD_06_dm01celadm02)
NOTE: Assigning number (1,5) to disk (o/192.168.10.7;192.168.10.8/DATAC1_CD_00_dm01celadm02)
NOTE: Assigning number (1,6) to disk (o/192.168.10.7;192.168.10.8/DATAC1_CD_10_dm01celadm02)
NOTE: Assigning number (1,7) to disk (o/192.168.10.7;192.168.10.8/DATAC1_CD_08_dm01celadm02)
NOTE: Assigning number (1,8) to disk (o/192.168.10.7;192.168.10.8/DATAC1_CD_03_dm01celadm02)
NOTE: Assigning number (1,9) to disk (o/192.168.10.7;192.168.10.8/DATAC1_CD_11_dm01celadm02)
NOTE: Assigning number (1,10) to disk (o/192.168.10.7;192.168.10.8/DATAC1_CD_01_dm01celadm02)
NOTE: Assigning number (1,11) to disk (o/192.168.10.7;192.168.10.8/DATAC1_CD_04_dm01celadm02)
NOTE: Assigning number (1,21) to disk (o/192.168.10.7;192.168.10.8/DATAC1_CD_05_dm01celadm02)
NOTE: Assigning number (1,43) to disk (o/192.168.10.7;192.168.10.8/DATAC1_CD_02_dm01celadm02)
NOTE: Assigning number (1,36) to disk (o/192.168.10.5;192.168.10.6/DATAC1_CD_07_dm01celadm01)
NOTE: Assigning number (1,37) to disk (o/192.168.10.5;192.168.10.6/DATAC1_CD_09_dm01celadm01)
NOTE: Assigning number (1,38) to disk (o/192.168.10.5;192.168.10.6/DATAC1_CD_11_dm01celadm01)
NOTE: Assigning number (1,0) to disk (o/192.168.10.5;192.168.10.6/DATAC1_CD_08_dm01celadm01)
NOTE: Assigning number (1,40) to disk (o/192.168.10.5;192.168.10.6/DATAC1_CD_00_dm01celadm01)
NOTE: Assigning number (1,41) to disk (o/192.168.10.5;192.168.10.6/DATAC1_CD_03_dm01celadm01)
NOTE: Assigning number (1,42) to disk (o/192.168.10.5;192.168.10.6/DATAC1_CD_06_dm01celadm01)
NOTE: Assigning number (1,44) to disk (o/192.168.10.5;192.168.10.6/DATAC1_CD_05_dm01celadm01)
NOTE: Assigning number (1,45) to disk (o/192.168.10.5;192.168.10.6/DATAC1_CD_01_dm01celadm01)
NOTE: Assigning number (1,46) to disk (o/192.168.10.5;192.168.10.6/DATAC1_CD_02_dm01celadm01)
NOTE: Assigning number (1,47) to disk (o/192.168.10.5;192.168.10.6/DATAC1_CD_10_dm01celadm01)
NOTE: Assigning number (1,2) to disk (o/192.168.10.5;192.168.10.6/DATAC1_CD_04_dm01celadm01)
Thu Jul 20 22:01:28 2023
NOTE: GMON heartbeating for grp 1
GMON querying group 1 at 450 for pid 30, osid 171838
NOTE: Assigning number (1,32) to disk ()
NOTE: Assigning number (1,39) to disk ()
GMON querying group 1 at 451 for pid 30, osid 171838
NOTE: cache closing disk 32 of grp 1: (not open) 
NOTE: process _user171838_+asm1 (171838) 
     initiating offline of disk 39.3915945266 () with mask 0x7e[0x7f] in group 1
NOTE: initiating PST update: grp = 1, dsk = 39/0xe9689532, mask = 0x6a, op = clear
GMON updating disk modes for group 1 at 452 for pid 30, osid 171838
NOTE: cache closing disk 32 of grp 1: (not open) 
ERROR: Disk 39 cannot be offlined, since all the disks [39, 32] with mirrored data would be offline.
ERROR: too many offline disks in PST (grp 1)
WARNING: Offline for disk  in mode 0x7f failed.
NOTE: cache dismounting (not clean) group 1/0x0728AD12 (DATAC1) 
NOTE: messaging CKPT to quiesce pins Unix process pid: 171838, image: oracle@dm01dbadm01.gyzq.cn (TNS V1-V3)
NOTE: dbwr not being msg'd to dismount
NOTE: lgwr not being msg'd to dismount
NOTE: cache dismounted group 1/0x0728AD12 (DATAC1) 
NOTE: cache ending mount (fail) of group DATAC1 number=1 incarn=0x0728ad12
NOTE: cache deleting context for group DATAC1 1/0x0728ad12
NOTE: cache closing disk 32 of grp 1: (not open) 
GMON dismounting group 1 at 453 for pid 30, osid 171838
NOTE: Disk DATAC1_CD_08_DM01CELADM01 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_08_DM01CELADM03 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_04_DM01CELADM01 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_07_DM01CELADM02 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_06_DM01CELADM02 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_00_DM01CELADM02 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_10_DM01CELADM02 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_08_DM01CELADM02 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_03_DM01CELADM02 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_11_DM01CELADM02 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_01_DM01CELADM02 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_04_DM01CELADM02 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_05_DM01CELADM02 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_00_DM01CELADM03 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_01_DM01CELADM03 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_02_DM01CELADM03 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_03_DM01CELADM03 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_04_DM01CELADM03 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_05_DM01CELADM03 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_06_DM01CELADM03 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_07_DM01CELADM03 in mode 0x7f marked for de-assignment
NOTE: Disk  in mode 0x1 marked for de-assignment
NOTE: Disk DATAC1_CD_09_DM01CELADM03 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_10_DM01CELADM03 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_11_DM01CELADM03 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_07_DM01CELADM01 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_09_DM01CELADM01 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_11_DM01CELADM01 in mode 0x7f marked for de-assignment
NOTE: Disk  in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_00_DM01CELADM01 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_03_DM01CELADM01 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_06_DM01CELADM01 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_02_DM01CELADM02 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_05_DM01CELADM01 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_01_DM01CELADM01 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_02_DM01CELADM01 in mode 0x7f marked for de-assignment
NOTE: Disk DATAC1_CD_10_DM01CELADM01 in mode 0x7f marked for de-assignment
ERROR: diskgroup DATAC1 was not mounted
ORA-15032: not all alterations performed
ORA-15040: diskgroup is incomplete
ORA-15066: offlining disk "39" in group "DATAC1" may result in a data loss
ORA-15042: ASM disk "39" is missing from group number "1" 
ORA-15042: ASM disk "32" is missing from group number "1" 
ERROR: alter diskgroup datac1 mount force

故障原因是由于asm disk 32还已经损坏在换盘过程中(数据没有reblance完成),又损坏了asm disk 39,而这两份磁盘中有数据互为镜像,因此磁盘组无法正常mount起来.

检查cell节点celldisk和griddisk情况，确认底层磁盘损坏
cellcli

对于这种情况,因为normal冗余的两份数据都有部分丢失,无法直接恢复数据,通过底层磁盘级别恢复(参考以前一次的Oracle exadata故障恢复:Oracle Exadata坏盘导致磁盘组无法mount恢复),然后比较顺利恢复数据,实现业务数据0丢失

SQL> alter datac1 mount;

Diskgroup altered.

SQL> alter diskgroup datac1 check all;

Diskgroup altered.

多套库顺利open成功
20230728124241

在实际恢复过程中由于客户进行了各种尝试,直接新镜像盘然后插入新盘,强制拉磁盘组drop异常disk操作等,导致第一现场发生一些破坏,增加了恢复难道,但是最终通过各种方法弥补,实现了预期的恢复效果(业务数据0丢失)

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