dataguard日志损坏处理

===== 问题 =====

日志损坏无法应用日志（开启MRP应用系统会因无法应用日志而关闭）

Completed: ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT FROM SESSION

Incomplete read from log member '/arch/2_1119_997386564.dbf'. Trying next member.

Incomplete read from log member '/arch/2_1119_997386564.dbf'. Trying next member.

Errors in file /oracle/app/oracle/diag/rdbms/orcldg/orcl/trace/orcl_pr00_40712.trc  (incident=108241):

ORA-00353: log corruption near block 2056 change 15781869802803 time 07/31/2019 06:57:33

ORA-00334: archived log: '/arch/2_1119_997386564.dbf'

Incident details in: /oracle/app/oracle/diag/rdbms/orcldg/orcl/incident/incdir_108241/orcl_pr00_40712_i108241.trc

Errors with log /arch/2_1119_997386564.dbf

Fri Aug 02 08:53:53 2019

Dumping diagnostic data in directory=[cdmp_20190802085353], requested by (instance=1, osid=40712 (PR00)), summary=[incident=108241].

MRP0: Detected read corruption! Retry recovery once log is re-fetched...

Errors in file /oracle/app/oracle/diag/rdbms/orcldg/orcl/trace/orcl_pr00_40712.trc:

ORA-00354: corrupt redo log block header

ORA-00353: log corruption near block 2056 change 15781869802803 time 07/31/2019 06:57:33

ORA-00334: archived log: '/arch/2_1119_997386564.dbf'

Managed Standby Recovery not using Real Time Apply

Recovery interrupted!

Fri Aug 02 08:53:54 2019

Sweep [inc][108241]: completed

==== 备库损坏的日志 ====

ORA-00334: archived log: '/arch/1_1091_997386564.dbf'

ORA-00334: archived log: '/arch/2_1119_997386564.dbf'

ORA-00334: archived log: '/arch/1_1093_997386564.dbf'

RA-00334: archived log: '/arch/2_1120_997386564.dbf'

==== 手动传输损坏的日志到备库 ====
分几种情况
1、主库归档日志还保留，直接将备库损坏的日志scp至备库
2、主库归档日志已清理，rman备份还保留，rman恢复归档日志后传输到备库
3、主库归档日志已清理，无备份，只能重新搭建adg了

#下面说一下第二种情况

1、查看归档日志备份信息

rman target /

RMAN>list backup of archivelog from logseq 1080 until logseq 1100;

2、主库恢复1091日志文件至本地

RMAN> run{

2> set archivelog destination to '/rman_bak/archbak';

3> restore archivelog SEQUENCE BETWEEN 1080 AND 1100;

4> }

executing command: SET ARCHIVELOG DESTINATION

Starting restore at 02-AUG-19

allocated channel: ORA_DISK_1

channel ORA_DISK_1: SID=872 instance=orcl1 device type=DISK

archived log for thread 1 with sequence 1092 is already on disk as file +ARCH/archivelog/1_1092_997386564.dbf

archived log for thread 1 with sequence 1093 is already on disk as file +ARCH/archivelog/1_1093_997386564.dbf

archived log for thread 1 with sequence 1094 is already on disk as file +ARCH/archivelog/1_1094_997386564.dbf

archived log for thread 1 with sequence 1095 is already on disk as file +ARCH/archivelog/1_1095_997386564.dbf

archived log for thread 1 with sequence 1096 is already on disk as file +ARCH/archivelog/1_1096_997386564.dbf

archived log for thread 1 with sequence 1097 is already on disk as file +ARCH/archivelog/1_1097_997386564.dbf

archived log for thread 1 with sequence 1098 is already on disk as file +ARCH/archivelog/1_1098_997386564.dbf

archived log for thread 1 with sequence 1099 is already on disk as file +ARCH/archivelog/1_1099_997386564.dbf

archived log for thread 1 with sequence 1100 is already on disk as file +ARCH/archivelog/1_1100_997386564.dbf

channel ORA_DISK_1: starting archived log restore to user-specified destination

archived log destination=/rman_bak/archbak

channel ORA_DISK_1: restoring archived log

archived log thread=1 sequence=1080

channel ORA_DISK_1: restoring archived log

archived log thread=1 sequence=1081

channel ORA_DISK_1: restoring archived log

archived log thread=1 sequence=1082

channel ORA_DISK_1: restoring archived log

archived log thread=1 sequence=1083

channel ORA_DISK_1: reading from backup piece /rman_bak/bak/arch_20190801_23241_1

channel ORA_DISK_1: piece handle=/rman_bak/bak/arch_20190801_23241_1 tag=TAG20190801T022702

channel ORA_DISK_1: restored backup piece 1

channel ORA_DISK_1: restore complete, elapsed time: 00:00:01

channel ORA_DISK_1: starting archived log restore to user-specified destination

archived log destination=/rman_bak/archbak

channel ORA_DISK_1: restoring archived log

archived log thread=1 sequence=1084

channel ORA_DISK_1: restoring archived log

archived log thread=1 sequence=1085

channel ORA_DISK_1: restoring archived log

archived log thread=1 sequence=1086

channel ORA_DISK_1: restoring archived log

archived log thread=1 sequence=1087

channel ORA_DISK_1: reading from backup piece /rman_bak/bak/arch_20190801_23242_1

channel ORA_DISK_1: piece handle=/rman_bak/bak/arch_20190801_23242_1 tag=TAG20190801T022702

channel ORA_DISK_1: restored backup piece 1

channel ORA_DISK_1: restore complete, elapsed time: 00:00:01

channel ORA_DISK_1: starting archived log restore to user-specified destination

archived log destination=/rman_bak/archbak

channel ORA_DISK_1: restoring archived log

archived log thread=1 sequence=1088

channel ORA_DISK_1: restoring archived log

archived log thread=1 sequence=1089

channel ORA_DISK_1: reading from backup piece /rman_bak/bak/arch_20190801_23243_1

channel ORA_DISK_1: piece handle=/rman_bak/bak/arch_20190801_23243_1 tag=TAG20190801T022702

channel ORA_DISK_1: restored backup piece 1

channel ORA_DISK_1: restore complete, elapsed time: 00:00:01

channel ORA_DISK_1: starting archived log restore to user-specified destination

archived log destination=/rman_bak/archbak

channel ORA_DISK_1: restoring archived log

archived log thread=1 sequence=1090

channel ORA_DISK_1: restoring archived log

archived log thread=1 sequence=1091

channel ORA_DISK_1: reading from backup piece /rman_bak/bak/arch_20190802_23296_1

channel ORA_DISK_1: piece handle=/rman_bak/bak/arch_20190802_23296_1 tag=TAG20190802T022801

channel ORA_DISK_1: restored backup piece 1

channel ORA_DISK_1: restore complete, elapsed time: 00:00:03

Finished restore at 02-AUG-19

3、将1091#日志文件传输到备库
4、备库开启MRP应用并查看日志应用情况

ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT FROM SESSION;

SELECT NAME,applied FROM v$archived_log where applied='NO';

日志部分输出：

Media Recovery Log /arch/2_1125_997386564.dbf

Fri Aug 02 10:49:25 2019

Media Recovery Log /arch/1_1098_997386564.dbf

Fri Aug 02 10:49:36 2019

Media Recovery Log /arch/2_1126_997386564.dbf

Fri Aug 02 10:50:43 2019

Media Recovery Log /arch/1_1099_997386564.dbf

Fri Aug 02 10:50:57 2019

#查看进程状态：

select process,status,thread#,sequence# from v$managed_standby order by 3,1;

PROCESS   STATUS	       THREAD#  SEQUENCE#

--------- ------------ ---------- ----------

RFS	        IDLE			       0	   0

RFS	        IDLE			       0	   0

RFS	        IDLE			       0	   0

ARCH	     CLOSING		       1	1457

ARCH	     CLOSING		       1	1073

MRP0	     APPLYING_LOG		   1	1095

RFS	       WRITING		       1	1458

ARCH	     CLOSING		       2	1485

ARCH	     CLOSING		       2	1483

RFS	       WRITING		       2	1486

ORA-00334: archived log: '/arch/1_1156_997386564.dbf'

Incomplete read from log member '/arch/2_1183_997386564.dbf'. Trying next member.

Incomplete read from log member '/arch/2_1183_997386564.dbf'. Trying next member.

Errors in file /oracle/app/oracle/diag/rdbms/orcldg/orcl/trace/orcl_pr00_1605.trc  (incident=108235):

ORA-00353: log corruption near block 6152 change 15781873869856 time 07/31/2019 13:22:46

ORA-00334: archived log: '/arch/2_1183_997386564.dbf

MRP0: Background Media Recovery process shutdown (orcl)

Fri Aug 02 13:10:28 2019

#手动传输日志：1_1156_997386564.dbf、/arch/2_1183_997386564.dbf

Media Recovery Log /arch/1_1156_997386564.dbf

Media Recovery Log /arch/2_1183_997386564.dbf

Completed: ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT FROM SESSION

Media Recovery Log /arch/2_1184_997386564.dbf

Fri Aug 02 14:53:11 2019

#核查以下日志是否applied

ORA-00334: archived log: '/arch/1_1166_997386564.dbf'

ORA-00334: archived log: '/arch/1_1163_997386564.dbf'

/arch/1_1091_997386564.dbf

/arch/2_1119_997386564.dbf

/arch/1_1093_997386564.dbf

/arch/2_1120_997386564.dbf

/arch/2_1124_997386564.dbf

/arch/1_1156_997386564.dbf

/arch/2_1183_997386564.dbf

/arch/1_1158_997386564.dbf

/arch/1_1159_997386564.dbf

/arch/1_1160_997386564.dbf

/arch/1_1161_997386564.dbf

/arch/2_1190_997386564.dbf

/arch/1_1163_997386564.dbf

/arch/1_1166_997386564.dbf

/arch/2_1228_997386564.dbf

ORA-16014: log 18 sequence# 1487 not archived, no available destinations

ORA-00312: online log 18 thread 2: '/oradata/orcldg/onlinelog/stdby_redo18.log

ORA-00334: archived log: '/arch/2_1230_997386564.dbf'

ORA-00334: archived log: '/arch/2_1243_997386564.dbf'

ORA-00334: archived log: '/arch/2_1245_997386564.dbf'

ORA-00334: archived log: '/arch/1_1223_997386564.dbf'

ORA-00334: archived log: '/arch/2_1254_997386564.dbf'

ORA-00334: archived log: '/arch/1_1228_997386564.dbf'

SQL> SELECT NAME,applied FROM v$archived_log where name like '%2_1254%';

NAME			       APPLIED

------------------------------ ---------

/arch/2_1254_997386564.dbf     NO

/arch/2_1254_997386564.dbf     YES

#以下日志已应用（展示的为未应用的状态）：
tips:重新应用的日志有两个状态，实际以数据库日志和MRP进程状态为准


NAME			       APPLIED

------------------------------ ---------

/arch/1_1091_997386564.dbf     NO

/arch/2_1119_997386564.dbf     NO

/arch/1_1092_997386564.dbf     NO

/arch/1_1093_997386564.dbf     NO

/arch/2_1124_997386564.dbf     NO

/arch/1_1156_997386564.dbf     NO

/arch/1_1158_997386564.dbf     NO

/arch/1_1159_997386564.dbf     NO

/arch/1_1160_997386564.dbf     NO

/arch/1_1161_997386564.dbf     NO

/arch/2_1190_997386564.dbf     NO

/arch/1_1163_997386564.dbf     NO

/arch/1_1166_997386564.dbf     NO

/arch/2_1228_997386564.dbf     NO

/arch/2_1243_997386564.dbf     NO

/arch/2_1245_997386564.dbf     NO

/arch/1_1223_997386564.dbf     NO

/arch/2_1254_997386564.dbf     NO

/arch/1_1228_997386564.dbf     NO

/arch/1_1203_997386564.dbf     NO

#查看进程状态

select process,status,thread#,sequence# from v$managed_standby order by 3,1;
PROCESS STATUS THREAD# SEQUENCE#
--------- ------------ ---------- ----------
RFS IDLE 0 0
RFS IDLE 0 0
RFS IDLE 0 0
ARCH CLOSING 1 1457
ARCH CLOSING 1 1073
MRP0 APPLYING_LOG 1 1095
RFS WRITING 1 1458
ARCH CLOSING 2 1485
ARCH CLOSING 2 1483
RFS WRITING 2 1486

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