Re: v$sql - executions vs loads vs invalidations
- From: Norman Dunbar <oracle@xxxxxxxxxxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Wed, 02 May 2012 08:49:45 +0100
Morning Gerry,
On 02/05/12 08:31, Gerry Miller wrote:
> As I mentioned in my reply to Carlos, there are over 6000 such queries in
> theshared pool, each with the structure:
> SELECT<schema_name>.<table_name>.*, rowid from<schema>.<table_name>
> WHERE1=0;
>
> I think I should quiz the developers as to what they are trying to do with
> these queries.
I've seen something like that before. I used to work in a software house
where Uniface was the development tool of choice. It was diabolical, but
excellent for "database agnostic" applications as it used the best of
each database.
Anyway, before a "table" could be used, it had to be "opened". The query
there was "select * from schema.table" which was parsed only, but never
executed. If the parse failed, then the table probably didn't exists and
the application would report a problem.
I suspect your queries above are something similar?
Cheers,
Norm.
--
Norman Dunbar
Dunbar IT Consultants Ltd
Registered address:
Thorpe House
61 Richardshaw Lane
Pudsey
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United Kingdom
LS28 7EL
Company Number: 05132767
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