Re: PANIC killing vacuum process

Silvio Brandani ha scritto:
> Kevin Grittner ha scritto:
>> Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com> wrote:
>>
>>> Silvio Brandani <silvio(dot)brandani(at)tech(dot)sdb(dot)it> wrote:
>>>
>>
>>
>>>> we have develop a script to execute the vacuum full on all tables
>>>>
>>
>>
>>> Vacuum full is more of a recovery / offline command and is to be
>>> used sparingly, especially before 9.0.
>>>
>>
>> And before 9.0, most of the situations where you might reasonably
>> consider VACUUM FULL, you were better off with CLUSTER.
>>
>>
>>>> very big database , since it is a 24 x 7 available system we have
>>>> not a timeframe to exec the vacuum full.
>>>>
>>> Is there a reason you're avoiding autovacuum and tuning it to keep
>>> up? It's usually the better option.
>>>
>>
>> Even if you have a case for doing database vacuums during off-peak
>> hours, you should almost certainly use autovacuum with settings at
>> least as aggressive as the default. At our shop we configure
>> autovacuum more aggressively than the default, to keep our small,
>> volatile tables tidy, and run a vacuum of the entire database each
>> night (which is, by the way, a very different thing than a VACUUM
>> FULL).
>>
>>
>>>> PostgreSQL 8.3.1 on x86_64-redhat-linux-gnu
>>>>
>>> Is there a good reason for avoiding about two years of updates
>>> (8.3.latest has a lot of bug fixes.)
>>>
>>
>> Yeah, this is important. See this page:
>>
>> http://www.postgresql.org/support/versioning
>>
>> Many of those fixes to 8.3 after 8.3.1 were to vacuum or autovacuum.
>> You can poke around the release notes here:
>>
>> http://www.postgresql.org/docs/8.3/static/release.html
>>
>> If problems with autovacuum were what drove you toward VACUUM FULL,
>> you should update and try autovacuum again. Going from 8.3.1 to
>> 8.3.12 is pretty painless and very safe -- just read the release
>> notes for details on what types of indexes need to be rebuilt after
>> the update. (That probably won't affect you, but you should check.)
>>
>> -Kevin
>>
>>
> Thanks a lot.
> We will migrate to 8.3.12 and keep autovacuum running instead of vauum
> full.
>
>
>
>
the postgres 9.0.x could be consider a stable version ?? or is better to
wait 9.1 , in this case when will be released ??

thanks

--
Silvio Brandani
Infrastructure Administrator
SDB Information Technology
Phone: +39.055.3811222
Fax: +39.055.5201119

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