RE: reloption to prevent VACUUM from truncating empty pages at theend of relation

From: Robert Haas [mailto:robertmhaas@gmail.com]
> I don't think that a VACUUM option would be out of place, but a GUC
> sounds like an attractive nuisance to me.  It will encourage people to
> just flip it blindly instead of considering the particular cases where
> they need that behavior, and I think chances are good that most people
> who do that will end up being sad.

Ouch, I sent my previous mail before reading this.  I can understand it may be cumbersome to identify and specify each
table,so I tend to agree the parameter in postgresql, which is USERSET to allow ALTER DATABASE/USER SET to tune
specificdatabases and applications.  But should the vacuuming of system catalogs also follow this setting?
 


Regards
Takayuki Tsunakawa