Обсуждение: turn off auto-commit
How to turn off auto-commit in pgsql 7.2?
>How to turn off auto-commit in pgsql 7.2? \set autocommit off \set autocommit on
There is no option in 7.2, but it will appear in 7.3, due out in a few months. --------------------------------------------------------------------------- Waruna Geekiyanage wrote: > How to turn off auto-commit in pgsql 7.2? -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073
No, they are unrelated. --------------------------------------------------------------------------- Waruna Geekiyanage wrote: > Does turn fsync off equivalent to turn autocommit off? > > > ----- Original Message ----- > From: Bruce Momjian <pgman@candle.pha.pa.us> > To: Waruna Geekiyanage <waruna@nirmani.com> > Cc: <pgsql-admin@postgresql.org> > Sent: Saturday, August 31, 2002 6:48 AM > Subject: Re: [ADMIN] turn off auto-commit > > > > > > There is no option in 7.2, but it will appear in 7.3, due out in a few > > months. > > > > > > -------------------------------------------------------------------------- > - > > > > Waruna Geekiyanage wrote: > > > How to turn off auto-commit in pgsql 7.2? > > > > -- > > Bruce Momjian | http://candle.pha.pa.us > > pgman@candle.pha.pa.us | (610) 359-1001 > > + If your life is a hard drive, | 13 Roberts Road > > + Christ can be your backup. | Newtown Square, Pennsylvania > 19073 > > > > > > > -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073
Does turn fsync off equivalent to turn autocommit off? ----- Original Message ----- From: Bruce Momjian <pgman@candle.pha.pa.us> To: Waruna Geekiyanage <waruna@nirmani.com> Cc: <pgsql-admin@postgresql.org> Sent: Saturday, August 31, 2002 6:48 AM Subject: Re: [ADMIN] turn off auto-commit > > There is no option in 7.2, but it will appear in 7.3, due out in a few > months. > > > -------------------------------------------------------------------------- - > > Waruna Geekiyanage wrote: > > How to turn off auto-commit in pgsql 7.2? > > -- > Bruce Momjian | http://candle.pha.pa.us > pgman@candle.pha.pa.us | (610) 359-1001 > + If your life is a hard drive, | 13 Roberts Road > + Christ can be your backup. | Newtown Square, Pennsylvania 19073 > >
Waruna Geekiyanage wrote: > Does turn fsync off equivalent to turn autocommit off? No, fsync is related to flushing information to disk. It doesn't relate to autocommit. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073
Bruce Momjian wrote: > Waruna Geekiyanage wrote: >> Does turn fsync off equivalent to turn autocommit off? > > No, fsync is related to flushing information to disk. It doesn't relate > to autocommit. > This auto-commit on/off, is this what I think it is; a way off NOT needing to enclose several statements in a begin/commit, but having a new transaction directly after a commit, in psql, like Oracle's sql*plus? If so, in what version was this introduced, or is this mentioned somewhere on the web? regards /Björn Lundin
> like > Oracle's sql*plus? Yes, it seems to act just like sql*plus in this regard. > If so, in what version was this introduced, or is this mentioned somewhere > on the web? I don't remember it ever not being there. I've been a user since version 6.5. -Nick
Bj�rn Lundin wrote: > Bruce Momjian wrote: > > > Waruna Geekiyanage wrote: > >> Does turn fsync off equivalent to turn autocommit off? > > > > No, fsync is related to flushing information to disk. It doesn't relate > > to autocommit. > > > This auto-commit on/off, is this what I think it is; > a way off NOT needing to enclose several statements in a begin/commit, > but having a new transaction directly after a commit, in psql, like > Oracle's sql*plus? > > If so, in what version was this introduced, or is this mentioned somewhere > on the web? Yes, autocommit appears in 7.3, due out in a few months. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073
Bruce Momjian wrote: > Yes, autocommit appears in 7.3, due out in a few months. A very nice feature, thanks. /Björn
> Bruce Momjian wrote: > > Yes, autocommit appears in 7.3, due out in a few months. I'm confused. Isn't autocommit already there & on by default in psql currently? -Nick
Nick Fankhauser wrote:
>
> > Bruce Momjian wrote:
> >
> > Yes, autocommit appears in 7.3, due out in a few months.
>
> I'm confused.
>
> Isn't autocommit already there & on by default in psql currently?
He wants to turn autocomit off:
$ psql
test=> UPDATE tab SET col = 1;
test=> UPDATE tab2 SET col = 2;
test=> COMMIT;
With autocommit off, you basically start in a multi-statement
transaction at the start and every time you commit.
--
Bruce Momjian | http://candle.pha.pa.us
pgman@candle.pha.pa.us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073
Oh! I thought Waruna wanted to turn it off, but Björn wanted to know if it could be controlled via psql. Either way, both questions got answered, so we're set. -Nick > -----Original Message----- > From: Bruce Momjian [mailto:pgman@candle.pha.pa.us] > Sent: Thursday, September 05, 2002 3:48 PM > To: nickf@ontko.com > Cc: pgsql-admin@postgresql.org > Subject: Re: [ADMIN] turn off auto-commit > > > Nick Fankhauser wrote: > > > > > Bruce Momjian wrote: > > > > > > Yes, autocommit appears in 7.3, due out in a few months. > > > > I'm confused. > > > > Isn't autocommit already there & on by default in psql currently? > > He wants to turn autocomit off: > > $ psql > test=> UPDATE tab SET col = 1; > test=> UPDATE tab2 SET col = 2; > test=> COMMIT; > > With autocommit off, you basically start in a multi-statement > transaction at the start and every time you commit. > > -- > Bruce Momjian | http://candle.pha.pa.us > pgman@candle.pha.pa.us | (610) 359-1001 > + If your life is a hard drive, | 13 Roberts Road > + Christ can be your backup. | Newtown Square, > Pennsylvania 19073 >