什么是隐藏幻灯片(做幻灯片怎么隐藏答案)
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2022-05-30
12C 物理Standby的 archive log list 情况如下:
ADG是可以正常同步的,但是备库执行 archive log list 时显示都为 0,因此比较好奇,于是查询mos发现:
**参考MOS文档:Archive Log List Showing 0 At Standby, But Standby Is Completely In Sync With Primary! (Doc ID 2041137.1) **
12C针对物理备库redo log做出了调整,可以通过以下SQL查看:
select GROUP#,STATUS from v$log;
12C:
11G:
解决方案:
** Do not use ARCHIVE LOG LIST on standby side.**
可以使用以下命令查看:
Primary: SQL> select thread#, max(sequence#) "Last Primary Seq Generated" from v$archived_log val, v$database vdb where val.resetlogs_change# = vdb.resetlogs_change# group by thread# order by 1; PhyStdby:SQL> select thread#, max(sequence#) "Last Standby Seq Received" from v$archived_log val, v$database vdb where val.resetlogs_change# = vdb.resetlogs_change# group by thread# order by 1; PhyStdby:SQL>select thread#, max(sequence#) "Last Standby Seq Applied" from v$archived_log val, v$database vdb where val.resetlogs_change# = vdb.resetlogs_change# and val.applied in ('YES','IN-MEMORY') group by thread# order by 1;
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