From: | Hasnul Fadhly bin Hasan <hasnulfadhly(dot)h(at)mimos(dot)my> |
---|---|
To: | Michael Fuhr <mike(at)fuhr(dot)org> |
Cc: | pgsql-performance(at)postgresql(dot)org |
Subject: | Re: Autocommit |
Date: | 2005-02-14 08:58:31 |
Message-ID: | 42106837.3020103@mimos.my |
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Thread: | |
Lists: | pgsql-performance |
Hi Micheal,
Thanks for the reply. I am using postgres 7.4.5 client. There's one
that is using 7.4.1 client. I'm not sure if there would be any difference.
When i use psql and check the status of autocommit, it is set to
enable. I'm not sure if libpq and psql uses the same defaults.
Thanks,
Hasnul
Michael Fuhr wrote:
>On Mon, Feb 14, 2005 at 04:01:20PM +0800, Hasnul Fadhly bin Hasan wrote:
>
>
>>I am just wondering, by default, autocommit is enabled for every client
>>connection. The documentations states that we have to use BEGIN
>>and END or COMMIT so to increase performance by not using autocommit.
>>My question is, when we use the BEGIN and END statements, is autocommit
>>unset/disabled automatically or we have to disable/unset it manually?
>>
>>
>
>What version of PostgreSQL is your server running and what client
>software are you using? PostgreSQL 7.3 had a server-side autocommit
>setting, but it caused problems with some clients so 7.4 got rid
>of it and left autocommit up to the client. How to enable or disable
>client-side autocommit depends on the client software, but if you're
>able to execute a BEGIN (or START TRANSACTION) statement then you
>should be inside a transaction until you execute COMMIT (or END)
>or ROLLBACK. That is, unless your client intercepts these statements
>and does whatever it wants....
>
>
>
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