描述：

Oracle 11g 删除备库所有standby redo log ，查看日志报错，处理方法如下。

报错信息如下：

Additional information: 3

Errors in file /fantlam/oracle/app/oracle/diag/rdbms/mmptdg/mmptdg/trace/mmptdg_rfs_4012.trc:

ORA-00313: open Failed for members of log group 4 of thread 1

ORA-00312: online log 4 thread 1: '/fantlam/oracle/app/oracle/oradata/mmptdg/stdby_redo01.log'

ORA-27037: unable to obtain file status

Linux-x86_64 Error: 2: No such file or directory

RFS[2]: Selected log 5 for thread 1 sequence 180 dbid 850194755 branch 974451523

Recovery of Online Redo Log: Thread 1 Group 5 Seq 180 Reading mem 0

Mem# 0: /fantlam/oracle/app/oracle/oradata/mmptdg/stdby_redo02.log

解决方法：

sql> select group#,status from v$standby_log;

GROUP# STATUS

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

4 ACTIVE

5 ACTIVE

6 UNASSIGNED

7 UNASSIGNED

sql>

sql> col member for a60

GROUP# STATUS MEMBER

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

1 /fantlam/oracle/app/oracle/oradata/mmptdg/redo01.log

2 /fantlam/oracle/app/oracle/oradata/mmptdg/redo02.log

3 /fantlam/oracle/app/oracle/oradata/mmptdg/redo03.log

4 /fantlam/oracle/app/oracle/oradata/mmptdg/stdby_redo01.log

5 /fantlam/oracle/app/oracle/oradata/mmptdg/stdby_redo02.log

6 /fantlam/oracle/app/oracle/oradata/mmptdg/stdby_redo03.log

7 /fantlam/oracle/app/oracle/oradata/mmptdg/stdby_redo04.log

7 rows selected.

sql> alter database clear logfile group 4;

alter database clear logfile group 4

*

ERROR at line 1:

ORA-01156: recovery or flashback in progress may need access to files

sql> alter database recover managed standby database cancel;

Database altered.

sql> alter database clear logfile group 5;

sql> alter database clear logfile group 6;

sql> alter database clear logfile group 7;

sql>

查看告警日志

主库切换日志，备库日志无告警。

Media Recovery Log /archivelog/1_209_974451523.dbf

Media Recovery Waiting for thread 1 sequence 210 (in transit)

Recovery of Online Redo Log: Thread 1 Group 5 Seq 210 Reading mem 0

Mem# 0: /fantlam/oracle/app/oracle/oradata/mmptdg/stdby_redo02.log

Media Recovery Waiting for thread 1 sequence 211 (in transit)

RFS[9]: Selected log 4 for thread 1 sequence 211 dbid 850194755 branch 974451523

Thu May 10 09:41:37 2018

Archived Log entry 164 added for thread 1 sequence 210 ID 0x32ae65b9 dest 1:

Archived Log entry 165 added for thread 1 sequence 211 ID 0x32ae65b9 dest 1:

RFS[9]: Selected log 4 for thread 1 sequence 213 dbid 850194755 branch 974451523

RFS[7]: Selected log 5 for thread 1 sequence 212 dbid 850194755 branch 974451523

RFS[9]: Selected log 6 for thread 1 sequence 214 dbid 850194755 branch 974451523

Archived Log entry 166 added for thread 1 sequence 212 ID 0x32ae65b9 dest 1:

Archived Log entry 167 added for thread 1 sequence 213 ID 0x32ae65b9 dest 1:

Media Recovery Log /archivelog/1_211_974451523.dbf

Media Recovery Log /archivelog/1_212_974451523.dbf

Media Recovery Log /archivelog/1_213_974451523.dbf

Media Recovery Waiting for thread 1 sequence 214 (in transit)

Recovery of Online Redo Log: Thread 1 Group 6 Seq 214 Reading mem 0

Mem# 0: /fantlam/oracle/app/oracle/oradata/mmptdg/stdby_redo03.log