Performance issue with Crystal when upgrading Oracle to 11g

Dear,
I am facing performance issue in crystal report and oracle 11g as below:
In ther report server, I have created a ODBC for connect to another Oracle 11g server. also in report server I have created and published a folder to content all of my crystal report. These report can connect to oracle 11g server via ODBC.
and I have a tomcat server to run my application in my application I refer to report folder in report server.
This way can work with SQL server and oracle 9 or 10g but it facing performance issue in oracle 11g.
please let me know the root cause.
Notes: report server, tomcate server are win 32bit, but oracle is in win 64bit, and i have upgraded DataDirect connect ODBC version 6.1 but the issue can not resolve.
Please help me to solve it.
Thanks so much,
Anh

Hi Anh,
Use a third party ODBC test tool now. SQL Plus will be using the Native Oracle client so you can't compare performance.
Download our old tool called SQLCON: https://smpdl.sap-ag.de/~sapidp/012002523100006252882008E/sqlcon32.zip
Connect and then click on the SQL tab and paste in the SQL from the report and time that test.
I believe the issue is because the Oracle client is 64 bit, you should install the 32 bit Oracle Client. If using the 64 bit client then the client must thunk ( convert 64 bit data to 32 bit data format ) which is going to take more time.
If you can use OLE DB or using the Oracle Server driver ( native driver ) should be faster. ODBC puts another layer on top of the Oracle client so it too takes time to communicate between the layers.
Thank you
Don

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ALTER PACKAGE pipeline_example COMPILE;Edited by: Earthlink on Nov 14, 2010 9:47 AM
Edited by: Earthlink on Nov 14, 2010 11:31 AM
Edited by: Earthlink on Nov 14, 2010 11:32 AM
Edited by: Earthlink on Nov 20, 2010 12:04 PM
Edited by: Earthlink on Nov 20, 2010 12:54 PM

Earthlink wrote:
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If you want to find out what's going on then use a TRACE with wait events.
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