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v$archived_log group tips

Oracle Tips by Donald BurlesonMay 2, 2017

Question: When I run this query in Standby server (oracle 11g and maximum availability)

SQL> select
group by

-------------- ---------
20 YES

This query always show applied column 'in-memory' for last archivelog that transfer to standby server . What should I do to change status of applied column from 'in-memory' to 'YES' for last archivelog transfer to standby.  This issue always exist for last archive log that transferred to standby server.

Answer:  Sorry I don't know the details for your issue!  The Oracle docs note this on the applied column of v$archived log:

The archived column  whether an archived redo log file has been applied to the corresponding physical standby database. The value is always NO for local destinations.

This column is meaningful on a physical standby database for rows where REGISTRAR = RFS:

If REGISTRAR = RFS and APPLIED = NO, then the log file has been received but has not yet been applied.
If REGISTRAR = RFS and APPLIED = IN-MEMORY, then the log file has been applied in memory, but the datafiles have not yet been updated.
If REGISTRAR = RFS and APPLIED = YES, then the log file has been applied and the datafiles have been updated.

This column can be used to identify log files that can be backed up and deleted. When used for this purpose, the value IN-MEMORY should be treated as if it were NO.

This Google search may help you research this issue.

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