Re: 10g slowdown

  • From: "David Barbour" <david.barbour1@xxxxxxxxx>
  • To: William.Blanchard@xxxxxxxxxx
  • Date: Fri, 12 Dec 2008 16:40:28 -0500

William,

What versions of SAP and Oracle are you using?  SAP is really funny about
bind peeking and recommends setting the hidden parameter
_optim_peek_user_binds to 'FALSE'.  There are also several events you should
have set (depending on your version of Oracle and SAP) to 'assist' Oracle in
executing a correct plan when confronted with SAP generated code.

Check the differences between your active parameters and events in QA and
PRD.

On Fri, Dec 12, 2008 at 3:48 PM, Allen, Brandon
<Brandon.Allen@xxxxxxxxxxx>wrote:

> I think that's pretty common and not necessarily a bug.  I'm not 100%
> positive, but I seem to remember reading somewhere that v$sql_shared_cursor
> by design only shows some, but not all, of the reasons for not sharing
> cursors.
>
> Regards,
> Brandon
>
> -----Original Message-----
> From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]
> On Behalf Of Rich Jesse
>
> Beware that there is also what I believe to be a bug where all values for
> the columns in v$sql_shared_cursor are "N", despite multiple children.
>
>
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