Java HotSpot Virtual Machine

Hi,
We are getting java.lang.OutOfMemoryError in our home grown application deployed on Weblogic 8.1. This error is occurring mainly during deployment and then the error line continues will we restart the managed server.
There are two managed servers in cluster where this application is deployed. Staging Mode: Stage.

The error lines are as follows:

<May 13, 2011 11:36:53 AM CDT> <Error> <Cluster> <BEA-000110> <Multicast socket receive error: java.lang.OutOfMemoryError
java.lang.OutOfMemoryError
>
<May 13, 2011 11:37:08 AM CDT> <Error> <HTTP> <BEA-101020> <[ServletContext(id=19152755,name=vspUsrTst,context-path=)] Servlet failed with Exception
java.lang.OutOfMemoryError
>
<May 13, 2011 11:37:27 AM CDT> <Error> <HTTP> <BEA-101020> <[ServletContext(id=19152755,name=vspUsrTst,context-path=)] Servlet failed with Exception
java.lang.OutOfMemoryError
>
<May 13, 2011 11:37:47 AM CDT> <Error> <HTTP> <BEA-101020> <[ServletContext(id=19152755,name=vspUsrTst,context-path=)] Servlet failed with Exception
java.lang.OutOfMemoryError

<May 13, 2011 11:39:43 AM CDT> <Info> <JDBC> <BEA-001068> <Connection for pool "IA1U" created.>
<May 13, 2011 11:39:43 AM CDT> <Info> <JDBC> <BEA-001132> <Initialized statement cache of size "10" for connection in pool "IA
1U".>
<May 13, 2011 11:39:46 AM CDT> <Info> <Common> <BEA-000628> <Created "1" resources for pool "IA1U", out of which "1" are avail
able and "0" are unavailable.>
javax.servlet.ServletException
<May 13, 2011 11:40:05 AM CDT> <Error> <HTTP> <BEA-101017> <[ServletContext(id=29757300,name=vsp,context-path=)] Root cause of
ServletException.
java.lang.OutOfMemoryError
>
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:469)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:28)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at com.opensymphony.oscache.web.filter.CacheFilter.doFilter(CacheFilter.java:175)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at com.supermedia.pprep.web.filter.PlatPrepOSCacheFilter.doFilter(PlatPrepOSCacheFilter.java:83)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at com.verizonis.main.filter.AccessFilter.doFilter(AccessFilter.java:419)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6724)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3764)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2644)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:219)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:178)
java.lang.OutOfMemoryError
2011-05-13 11:39:46,097 ERROR [ExecuteThread: '21' for queue: 'weblogic.kernel.Default'] (PlatPrepCacheKeyProvider.java:167) -
generatedKey = cid=1102756087
<May 13, 2011 11:40:22 AM CDT> <Error> <HTTP> <BEA-101020> <[ServletContext(id=19152755,name=vspUsrTst,context-path=)] Servlet
failed with Exception
java.lang.OutOfMemoryError
>
2011-05-13 11:39:46,098 ERROR [ExecuteThread: '19' for queue: 'weblogic.kernel.Default'] (PlatPrepCacheKeyProvider.java:167) -
generatedKey = cid=1102756087
About to set Account Team.
<May 13, 2011 11:40:58 AM CDT> <Error> <Cluster> <BEA-000110> <Multicast socket receive error: java.lang.OutOfMemoryError
java.lang.OutOfMemoryError
>
OutOfMemoryError occured on server
OutOfMemoryError occured on server
java.sql.SQLException: ORA-00942: table or view does not exist

<May 13, 2011 11:41:08 AM CDT> <Error> <Cluster> <BEA-000110> <Multicast socket receive error: java.lang.OutOfMemoryError
java.lang.OutOfMemoryError
>
OutOfMemoryError occured on server
OutOfMemoryError occured on server
<May 13, 2011 11:41:22 AM CDT> <Error> <Cluster> <BEA-000110> <Multicast socket receive error: java.lang.OutOfMemoryError
java.lang.OutOfMemoryError

This is our test environment and this is happening every day whenever application team is going to deploy the code. Till this is solved, we can't port it into production. We have investigated for 3 weeks on this, found no clue. So posting in this forum with the hope of some help.