DG GAP解决方案

Posted 2020-10-07

备库中大量出现类似如下内容：

Tue Apr 26 17:34:49 2016

SMON: enabling cache recovery

Dictionary check beginning

Dictionary check complete

Database Characterset is AL32UTF8

No Resource Manager plan active

replication_dependency_tracking turned off (no async multimaster replication found)

Physical standby database opened for read only access.

Completed: alter database open read only

CORRUPTION DETECTED: In redo blocks starting at block 1count 2048 for thread 1 sequence 373

ALTER DATABASE RsECOVER  managed standby database using current logfile disconnect  

Attempt to start background Managed Standby Recovery process (orcl)

 

 

 

 

在主库查询归档应用情况：

set lines 300 pages 300

col name for a20

select name,dest_id,thread#,sequence#,standby_dest,applied,registrar,completion_time 

from v$archived_log

where standby_dest=‘YES‘  

order by thread#,sequence#;

 

 set linesize 140

 set pagesize 999

 col SEQUENCE# for 999999

 col APPLIED for a10

 col ARCHIVED for a8

 col FIRST_TIME for a20

 col NEXT_TIME for a20

 alter session set nls_date_format=‘yyyy-mm-dd hh24:mi:ss‘;

select * from (select SEQUENCE#, FIRST_TIME, NEXT_TIME, APPLIED, ARCHIVED from V$ARCHIVED_LOG order by 1 desc) where rownum<100 order by 1;

 

select SEQUENCE#, FIRST_TIME, NEXT_TIME, APPLIED, ARCHIVED from V$ARCHIVED_LOG; 

SEQUENCE# FIRST_TIME       NEXT_TIME   APPLIED   ARC

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

       387 26-APR-16       26-APR-16   NO    YES

       386 26-APR-16       26-APR-16   NO    YES

       385 26-APR-16       26-APR-16   NO    YES

       382 26-APR-16       26-APR-16   NO    YES

       381 26-APR-16       26-APR-16   NO    YES

       380 26-APR-16       26-APR-16   NO    YES

       379 26-APR-16       26-APR-16   NO    YES

       378 26-APR-16       26-APR-16   NO    YES

       377 26-APR-16       26-APR-16   NO    YES

       376 26-APR-16       26-APR-16   NO    YES

       375 26-APR-16       26-APR-16   NO    YES

       374 26-APR-16       26-APR-16   NO    YES

       372 26-APR-16       26-APR-16   YES    YES

       371 26-APR-16       26-APR-16   YES    YES

       370 26-APR-16       26-APR-16   YES    YES

       369 26-APR-16       26-APR-16   YES    YES

       368 26-APR-16       26-APR-16   YES    YES

       367 26-APR-16       26-APR-16   YES    YES

       366 26-APR-16       26-APR-16   YES    YES

       365 26-APR-16       26-APR-16   YES    YES

       364 26-APR-16       26-APR-16   YES    YES

       363 26-APR-16       26-APR-16   YES    YES

       362 26-APR-16       26-APR-16   YES    YES

       361 26-APR-16       26-APR-16   YES    YES

       360 26-APR-16       26-APR-16   YES    YES

       

经检查，发现373号归档没应用。 并且查看/data/arch 目录也未发现。

 

解决办法：

从主库传送373号归档到备库，然后手工注册：

alter database register physical logfile ‘/data/arch/1_1604_905778979.dbf‘;