"T. E. Lawrence" <[email protected]>
<CAMkU=1y6UuxPYbf_ky8DVDsJi=g=uq1t0b6kwletdc7nlxb...@mail.gmail.com> writes:
> On 15.01.2013, at 05:45, Jeff Janes <[email protected]> wrote:
>>> Is the autovacuum 100% reliable in relation to VACUUM ANALYZE?
>> No. For example, if you constantly do things that need an access exclusive
>> lock, then autovac will keep getting interrupted and never finish.
> I see.
> So, apparently, we need to interrupt the heavy imports on some reasonable
> intervals and do manual VACUUM ANALYZE?
Data import as such, no matter how "heavy", shouldn't be a problem.
The question is what are you doing that takes access-exclusive table
locks frequently, and do you really need to do that?
A quick look at the docs suggests that ALTER TABLE, REINDEX, or CLUSTER
would be the most likely candidates for taking exclusive table locks.
regards, tom lane
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