Quoth rmalghan@btspartners.com ("Malghan, Ravi"):
> What I am trying to do is, I have multiple databases some of which
> are frequently accessed. So I am trying to see if the one's which
> are frequently accessed can be run as memory resident and others run
> normally. I am thinking this might improve response times.
In the ancient past, people would "set the sticky bit" on executable
programs to force them to stay in memory; that idea has become
obsolete what with larger memory sizes and more sophisticated memory
management schemes in Unix variants. I think you're essentially
trying to express the same idea here...
The tables/databases that are frequently accessed should already be
mostly in memory as a result of the way your OS caches data.
It's not likely that there's anything that you can do "inside
PostgreSQL" that would be helpful in this regard.
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