On 03/30/11 1:56 PM, Mike Orr wrote:
MySQL simply locks the tables, drops/recreates them, loads the data,
and unlocks the tables. Other connections have to wait but they don't
have to be closed/reopened. The PostgreSQL manual recommends restoring
into an empty database using template0, which would require first
closing the other connections and then dropping the database. It would
also take unnecessary time to recreate the database and tables that
aren't changing. So I'm wondering if there's a less obtrusive way to
refresh the data.
its a backup server, right? so noone is accessing it, are they?
rather than using pg_dump -Fc |pg_restore, you can use pg_dump | psql
... and you can tell pg_dump in this mode to only dump specified tables.
however, you might look at PITR and/or WAL log shipping rather than
dump/restore. this would only update new data, and when you playback
the WAL log on the backup server bring it up to whatever point in time
you want.
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