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04-18-2008, 11:07 AM
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 Re: Autocommit 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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04-18-2008, 11:07 AM
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| Re: Autocommit On Mon, Feb 14, 2005 at 04:58:31PM +0800, Hasnul Fadhly bin Hasan wrote: > 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. As far as I can tell, libpq doesn't have an autocommit setting -- it just sends statements on behalf of the application. Clients that allow the user to disable autocommit presumably do so by implicitly sending BEGIN statements to start new transactions. -- Michael Fuhr http://www.fuhr.org/~mfuhr/ ---------------------------(end of broadcast)--------------------------- TIP 7: don't forget to increase your free space map settings |
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