Getting java.lang.OutOfMemoryError

Hi,
I am getting a java.lang.OutOfMemoryError in a created oa page. The suspected cause is running the same query for many times (> 12 times). But it's necessary to run them many times. So is there any solution to work the error out? like cleaning the JVM memory manually/programatically? Please advise.
thank you very much!

Hi Guys,
Thanks very much for the helpful inputs.
Updating the case:
1. vo.ClearCache() will not work. I think this one clear the VO cache but not memory
2. vo.reset() will work. that means this one will clear the memory?
3. System.gc() will work. I put this function every time I finished running the query
But I think Pratap is right. The right way to work this out is go through procedures.
And do you guys think vo.reset() will be good enough for this issue? (System.gc() is not recommended I think.)
thanks a lot.

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Hi,
Now as you can see that you are getting *"java.lang.OutOfMemoryError: PermGen space"* during the activation on an application it means that you are application needs more space in the non-heap part of the JVM which is PermGen to create the Classes, Class Structures, Methods and Reflection Objects of this applications hence you are getting this issue.
Now how to solve this issue you try the following check list which would help you resolve this issue and overcome same type of issue in future
Point-1). Make Sure that the PermGen Area is not set to a very less value.
Point-2). Usually if an Application has Many JSP Pages in that case every JSP will be converted to a *.class file before JSP Request Process. So a large number of JSPs causes generation of a Large number of *.class files all these classes gets loaded in the PermGen area.
Point-3). While allocating the -XX:MaxPermSize make sure that you follow a rough Formula… which works in most of the Application Servers.
MaxPermSize = (Xmx/3) —- Very Special Cases (One Third of maximum Heap Size)
MaxPermSize = (Xmx/4) —- Recommended (One Fourth Of maximum Heap Size
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Topic: OutOfMemory Causes and First Aid Steps?
http://middlewaremagic.com/weblogic/?p=4464
Regards,
Ravish Mody

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Message was edited by:
VenkateshSampoornam

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Hi JLK,
Now as you can see that you are getting "java.lang.OutOfMemoryError: PermGen space" during the activation on an application it means that you are application needs more space in the non-heap part of the JVM which is PermGen to create the Classes, Class Structures, Methods and Reflection Objects of this applications hence you are getting this issue.
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3). While allocating the -XX:MaxPermSize make sure that you follow a rough Formula… which works in most of the Application Servers.
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http://middlewaremagic.com/weblogic/?p=4464
Regards,
Ravish Mody

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