Savepoints in ODBC driver

Hello,

while checking some performance bottlenecks I realized that the ODBC
driver is creating/deleting a savepoint for *every* command send to
the server.

Grep for SC_start_rbpoint and SC_started_rbpoint to see what I mean.
This does require 3 roundtrips to the server (instead of one) and some
additional processing time for the backend to create/delete the
savepoint every time.

What's the rational behind this? And can this be turned off somewhere?

Rainer


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Re: Savepoints in ODBC driver

Hello,

anybody?

Sunday, August 9, 2009, 10:38:48 PM, I wrote:

RB> Hello,

RB> while checking some performance bottlenecks I realized that the ODBC
RB> driver is creating/deleting a savepoint for *every* command send to
RB> the server.

RB> Grep for SC_start_rbpoint and SC_started_rbpoint to see what I mean.
RB> This does require 3 roundtrips to the server (instead of one) and some
RB> additional processing time for the backend to create/delete the
RB> savepoint every time.

RB> What's the rational behind this? And can this be turned off somewhere?

RB> Rainer


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Re: Savepoints in ODBC driver

On Tue, Aug 18, 2009 at 12:45 PM, Rainer Bauer wrote:

> RB> while checking some performance bottlenecks I realized that the ODBC
> RB> driver is creating/deleting a savepoint for *every* command send to
> RB> the server.

I can only guess. But I would expect that your "Level of Rollback on
Error" could be causing this. You might try a different setting.

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Richard Broersma Jr.

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Re: Savepoints in ODBC driver

Hello Richard,

Tuesday, August 18, 2009, 11:26:49 PM, you wrote:

RB> On Tue, Aug 18, 2009 at 12:45 PM, Rainer Bauer wrote:

>> RB> while checking some performance bottlenecks I realized that the ODBC
>> RB> driver is creating/deleting a savepoint for *every* command send to
>> RB> the server.

RB> I can only guess. But I would expect that your "Level of Rollback on
RB> Error" could be causing this. You might try a different setting.

Bingo! Thanks Richard.

Rainer


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