| From: | Michael Fuhr <mike(at)fuhr(dot)org> |
|---|---|
| To: | Hasnul Fadhly bin Hasan <hasnulfadhly(dot)h(at)mimos(dot)my> |
| Cc: | pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: Autocommit |
| Date: | 2005-02-14 08:47:03 |
| Message-ID: | 20050214084703.GA4038@winnie.fuhr.org |
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| Lists: | pgsql-performance |
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....
--
Michael Fuhr
http://www.fuhr.org/~mfuhr/
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