Re: PQexec and timeouts

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От Medi Montaseri
Тема Re: PQexec and timeouts
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Msg-id 3DF7EFD8.3020607@intransa.com
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Ответ на Re: PQexec and timeouts  (Bruce Momjian <pgman@candle.pha.pa.us>)
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Ahaa....that is good....keep it comming....

Bruce Momjian wrote:

>Have you seen 'statement_timeout" SET parameter in 7.3?
>
>
>---------------------------------------------------------------------------
>
>Medi Montaseri wrote:
>
>
>>Is there any configuration parameter (run time or compile time) that would
>>allow me to timeout from a query.....
>>
>>ie, say I make a query (select or delete or whatever) against the
>>backend which
>>is using some disk off of a networked storage (NAS, SAN, etc)...
>>
>>I need to timeout if the resource (disk or the network) is wedged...
>>
>>If not, then what if I implement it using
>>    PQsendQuery()
>>    select on the connection socket with some timeout
>>    if you haven't gotton your answer, abort the query...
>>
>>What is the best way to abort the query...I know of
>>
>>PQfinish()    # too expensive, it closes the TCP connection
>>PQreset()    # not sure but almost as expensive as PQfinish()
>>PQrequestCancel()   # this sounds good...
>>
>>Thanks
>>
>>
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>>
>
>
>




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