On Tue, Aug 23, 2011 at 08:30:55PM +0530, Raghavendra wrote:
>
> Is it a best practice to keep cluster in Archive_mode = on and setup
> streaming replication or just leave archive_mode=off?
Depends. The reason for creating WAL is in case they are needed for recovery.
In the event that the stby host goes down, if bringing it back into service
exceeds wal_keep_segments on the primary then you would need to rebuild
the standby. This is a local decision and should be made based on business
rules.