Gauri Kanekar wrote:
Andrew,
Can you explain me in detail why u said vacuum full is making the things
worst.
We do vacuum full, as vacuum verbose analyse dont regain space for us.
vacuum full stops all access so that the data files can be re-writen
without the unused space.
normal vacuum will update the records of what space is no longer used so
that it can then be reused with the next update/insert. Your db size
will not shrink straight away but it will stop growing until you use all
the free space left from previous update/delete
The more frequently you do a normal vacuum the less time it will take
and things will run a lot smoother with your file size growing slowly to
accommodate new data.
Expanding on what others have mentioned as a drawback of vacuum full -
you should look at REINDEX'ing as well (maybe one index or table at a
time). You will most likely find this will reclaim some disk space for
you as well.
--
Shane Ambler
pgSQL (at) Sheeky (dot) Biz
Get Sheeky @ http://Sheeky.Biz
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