主库增加表空间导致DG同步失败

Posted 2021-12-04 connected

由于主库表空间不足，同事给表空间增加数据文件，第二天收到反馈说备库未同步。

1、主、备查看归档序列号，发现主、备归档正常同步。

SQL>archive log list

2、在主库端查询v$archived_log视图，确认日志是否被应用

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#;

3、在备库查看接收到的被应用的redo，发现日志未被应用

SELECT SEQUENCE#,APPLIED FROM V$ARCHIVED_LOG ORDER BY SEQUENCE#;

4、处理方式:

现在备库中建立了对应的文件夹并赋权
将备库中STANDBY_FILE_MANAGEMENT选项设定为MANUAL
查找出对应的UNNAMED 文件
将UNNAMED文件重命名为指定需要新建的数据文件
将备库STANDBY_FILE_MANAGEMENT 恢复设置为auto
同步数据

show parameter STANDBY_FILE_MANAGEMENT
ALTER SYSTEM SET STANDBY_FILE_MANAGEMENT=MANUAL;
select name from v$datafile where name like ‘%UNNAMED%‘;

查询结果：

/u01/app/oracle/product/11gR2/dbhome_1/dbs/UNNAMED11
/u01/app/oracle/product/11gR2/dbhome_1/dbs/UNNAMED12

 

alter database create datafile  ‘/u01/app/oracle/product/11.2.0/dbhome_1/dbs/UNNAMED11‘ as ‘/oradata/xxxxxxx11.dbf‘;
recover managed standby database disconnect;

select name from v$datafile;

alter database create datafile  ‘/u01/app/oracle/product/11.2.0/dbhome_1/dbs/UNNAMED12‘ as ‘/oradata/xxxxxxx12.dbf‘;
recover managed standby database disconnect;

select name from v$datafile;

ALTER SYSTEM SET STANDBY_FILE_MANAGEMENT=auto;

 5、备库启用apply，接收来自主库的redo并apply

alter database recover managed standby database using current logfile disconnect from session;

6、取消同步

ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL;

7、备库再次启用apply，接收来自主库的redo并apply

ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL;

8、根据步骤1、2、3进行验证。