Обсуждение: AUTO COMMIT
The postgres manual states:
"In the default mode, statements are committed only when EXEC SQL COMMIT is issued. The embedded SQL interface also supports autocommit of transactions (similar to libpq behavior) via the -t command-line option to ecpg (see below) or via the EXEC SQL SET AUTOCOMMIT TO ON statement. In autocommit mode, each command is automatically committed unless it is inside an explicit transaction block. This mode can be explicitly turned off using EXEC SQL SET AUTOCOMMIT TO OFF."
I've used the -t command-line option when compiling my code, and AUTOCOMMIT is set, but I still get the following error message when declaring a cursor:
DECLARE CURSOR can only be used in transaction blocks.
What am I doing wrong?
Thanks
Atif
Le Mon, 28 Jun 2010 15:56:51 +0100,
Atif Jung <atifjung@gmail.com> a écrit :
...
> "In the default mode, statements are committed only when EXEC SQL COMMIT
> is issued. The embedded SQL interface also supports autocommit of
> transactions (similar to libpq behavior) via the -t command-line option
> to ecpg (see below) or via the EXEC SQL SET AUTOCOMMIT TO ON statement.
> In autocommit mode, each command is automatically committed unless it is
> inside an explicit transaction block. This mode can be explicitly turned
> off using EXEC SQL SET AUTOCOMMIT TO OFF."
>
> I've used the -t command-line option when compiling my code, and
> AUTOCOMMIT is set, but I still get the following error message when
> declaring a cursor:
>
> DECLARE CURSOR can only be used in transaction blocks.
>
> What am I doing wrong?
autocommit means *every* line is begin/commit (or fails).
--
QOTD:
"He's so egotistical he yells his own name when he comes."
Sorry I'm still confused. as I said in my earlier e-mail I've built the program using the -t option for ecpg. AUTOCOMMIT is set to on, however I still get an error when opening a declared cursor:
"DECLARE CURSOR can only be used in transaction blocks".
If I stick a EXEC SQL BEGIN WORK before declaring the cursor it seems to work ok, but I thought the -t option saves me from having to do that each time.
Atif
On 28 June 2010 19:23, Jean-Yves F. Barbier <12ukwn@gmail.com> wrote:
Le Mon, 28 Jun 2010 15:56:51 +0100,
Atif Jung <atifjung@gmail.com> a écrit :
...autocommit means *every* line is begin/commit (or fails).> "In the default mode, statements are committed only when EXEC SQL COMMIT
> is issued. The embedded SQL interface also supports autocommit of
> transactions (similar to libpq behavior) via the -t command-line option
> to ecpg (see below) or via the EXEC SQL SET AUTOCOMMIT TO ON statement.
> In autocommit mode, each command is automatically committed unless it is
> inside an explicit transaction block. This mode can be explicitly turned
> off using EXEC SQL SET AUTOCOMMIT TO OFF."
>
> I've used the -t command-line option when compiling my code, and
> AUTOCOMMIT is set, but I still get the following error message when
> declaring a cursor:
>
> DECLARE CURSOR can only be used in transaction blocks.
>
> What am I doing wrong?
--
QOTD:
"He's so egotistical he yells his own name when he comes."
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