ODBC and parsing

Hi all
I have an issue with a poorly written (imo) program that uses Oracle9204 drivers to connect to an Oracle 9204 db. This application does two things that are awful for performance.
First it does row at a time processing rather than set processing. I'll be talking to the suppliers about this.
Second, and this is the puzzle, for each row it sends a statement to the db
select * from tab where pk = 'pk_value';
which gets parsed but not executed.
immediately afterwards it sends
select rowid,* from tab where pk = 'pk_value';
which does get executed. (and indeed parsed - no bind variables here).
The app is suffering horribly on sqlnet traffic.
I'd like to get the sql rewritten to use set processing, but in the mean time if I can figure out why my second symptom happens I'd potentially cut 48% or so of the response time of the app. So the question is does anyone know what has been done that makes a C/ODBC app send a statement for parsing only followed by sending the same statement with rowid prepended to the select list (and can i do anything about it).
cheers
Niall

Do you have the ability to modify the source code? "Talking to the suppliers" may indicate that this is a delivered app that you can't modify-- that'll definitely limit your options.
The driver has to add ROWID to statements it sends to the database in order to allow for scrolling cursors (i.e. the ability to go back & forth). If the application can request forward-only cursors, that can simplify life, but that would be a code change.
Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

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Double post.
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ODBC and parsing

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