Re: Should autovacuum do a database wide vacuum near transaction limit?

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От John Lister
Тема Re: Should autovacuum do a database wide vacuum near transaction limit?
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Msg-id CFDF7ED35F814573BDD5658496D53F33@squarepi.com
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Ответ на Should autovacuum do a database wide vacuum near transaction limit?  ("John Lister" <john.lister-ps@kickstone.com>)
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> "John Lister"<john.lister-ps@kickstone.com>  writes:
>> On another bizarre note, A database wide vacuum has just finished, but
>> I'm
>> still getting the warnings:
>> GMT WARNING:  database "backend" must be vacuumed within 10205310
>> transactions
> Did you do that vacuum as a superuser?
Thanks for your help, but I managed to work it out using an answer you gave
in another thread. I looked at which tables had a frozen xid equal to the
database value and found that there were 7 temporary tables with numbers
equal or very close to it. I couldn't find a way to determine which process
created those tables ( - is this possible?) and therefore see how long it
had been running, etc

 Instead I tried to vacuum them, but this didn't make any difference (or
indeed do anything), so in the end I deleted the tables manually instead,
which instantly reset the transaction count back to the 1billion mark.  I
now need to find out which process probably died due to its temp tables
disappearing, again they appeared odd - single alphabetical names - which I
wasn't expecting...

 Was this expected behaviour with temporary tables?

Cheers
John


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