RE: "No bind buffers allocated" and "_optim_peek_user_binds = true"
- From: <Joel.Patterson@xxxxxxxxxxx>
- To: <sacrophyte@xxxxxxxxx>, <breitliw@xxxxxxxxxxxxx>
- Date: Wed, 13 Sep 2006 14:24:18 -0400
This does sound similar to what my developer is talking about... the
_optim_peek_user_binds is hidden no? I've never used it.
My statistics_level is typical. And the version is 10.2.0.1
Joel Patterson
Database Administrator
joel.patterson@xxxxxxxxxxx
x72542
904 727-2542
________________________________
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Charles Schultz
Sent: Wednesday, September 13, 2006 9:46 AM
To: Wolfgang Breitling
Cc: Oracle-L Freelists
Subject: Re: "No bind buffers allocated" and "_optim_peek_user_binds =
true"
I filed a bug with Oracle. Apparently, bind buffers are not peeked when
you set statistics_level = ALL in 10.2.0.2. At least, not for my simple
tests.
I was using statistics_level = all because it makes Cardinality Feedback
so much simpler (query 2 dictionary tables, as opposed to ripping apart
10046 and 10053 traces). So much for that idea....
On 9/12/06, Charles Schultz <sacrophyte@xxxxxxxxx> wrote:
This is straight pl/sql issued via sqlplus from the command line on the
same host.
On 9/12/06, Wolfgang Breitling < breitliw@xxxxxxxxxxxxx
<mailto:breitliw@xxxxxxxxxxxxx> > wrote:
What is the application which shows that? It is possible to for an
application
to issue a parse call without supplying bind values. There was a problem
with a
version of JDBC which it didn't send bind info, but I believe that is
fixed in
10.2 - assuming the client also has been upgraded to 10.2.
Christian Antognini will know more details about this.
Quoting Charles Schultz <sacrophyte@xxxxxxxxx >:
> Under which circumstances will a bind buffer not be allocated? I was
> diagnosing a 10053 trace and even though it looks like the bind
variables
> should be peeked, I get empty buffers. The query plan seems to reflect
this,
--
regards
Wolfgang Breitling
Oracle 7,8,8i,9i OCP DBA
Centrex Consulting Corporation
www.centrexcc.com
--
Charles Schultz
--
Charles Schultz
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