RE: CURSOR_SHARING in 9i: FORCE vs. SIMILAR

From: Jesse, Rich <Rich.Jesse_at_quadtechworld.com>
Date: Wed, 19 May 2004 10:01:45 -0500
Message-ID: <FBE1FCA40ECAD41180400050DA2BC54004E939A2@qtiexch2.qgraph.com>

I was checking the explain plan with EXPLAIN via TOAD. Once I fired up = a 10046 trace, I clearly saw the diffs between the two executions in the = STAT lines. And, as a bonus, the trace has the updating of = SYS.OBJECT_USAGE after the query that used the index. :)

Prepare to change CS=3DF to CS=3DS...

Thanks, Jonathan!

Rich

Rich Jesse                        System/Database Administrator
rich.jesse_at_quadtechworld.com      QuadTech, Sussex, WI USA

> From: oracle-l-bounce_at_freelists.org
> Sent: Wednesday, May 19, 2004 7:04 AM
> Subject: Re: CURSOR_SHARING in 9i: FORCE vs. SIMILAR

>=20

> How are you checking the execution plan ?

>=20

> If you use autotrace, you WILL be told about
> two different plans, because Oracle does not
> use cursor_sharing for explain plan.

>=20


> e.g.

>     set autotrace on

>     select * from t1 where id =3D 88

>=20


> Two rows appear in v$sql

>     EXPLAIN PLAN SET STATEMENT_ID=3D'PLUS701' FOR select * from=20

> t1 where id =3D
> 88
> select * from t1 where id =3D :"SYS_B_0"

>=20
>=20

> Regards

>=20
> Jonathan Lewis

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Received on Wed May 19 2004 - 10:02:16 CDT