Toomany files open on high load

We have a app with MDB's and stateles EJB's
Under lower load it works fine. When the load increases, we get the following exception
on the weblogic trace.
java.io.FileNotFoundException: ./config.xml (Too many open files)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(Unknown Source)
at weblogic.management.internal.AdminMBeanHomeImpl.getDigest(AdminMBeanHomeImpl.java:846)
at weblogic.management.internal.AdminMBeanHomeImpl.updateManagedServerMSIFile(AdminMBeanHomeImpl.java:754)
at weblogic.management.internal.SaveDomainTrigger.trigger(SaveDomainTrigger.java:55)
at weblogic.time.common.internal.ScheduledTrigger$1.run(ScheduledTrigger.java:174)
at weblogic.security.service.SecurityServiceManager.runAs(SecurityServiceManager.java:721)
at weblogic.time.common.internal.ScheduledTrigger.executeLocally(ScheduledTrigger.java:171)
at weblogic.time.common.internal.ScheduledTrigger.execute(ScheduledTrigger.java:161)
at weblogic.time.server.ScheduledTrigger.execute(ScheduledTrigger.java:38)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:152)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:133)
<Jul 12, 2002 1:26:27 PM PDT> <Error> <kernel> <000802> <ExecuteRequest failed
java.lang.NullPointerException
java.lang.NullPointerException
at weblogic.security.MessageDigestUtils.isEqual(MessageDigestUtils.java:42)
at weblogic.management.internal.AdminMBeanHomeImpl.updateManagedServerMSIFile(AdminMBeanHomeImpl.java:755)
at weblogic.management.internal.SaveDomainTrigger.trigger(SaveDomainTrigger.java:55)
at weblogic.time.common.internal.ScheduledTrigger$1.run(ScheduledTrigger.java:174)
at weblogic.security.service.SecurityServiceManager.runAs(SecurityServiceManager.java:721)
at weblogic.time.common.internal.ScheduledTrigger.executeLocally(ScheduledTrigger.java:171)
at weblogic.time.common.internal.ScheduledTrigger.execute(ScheduledTrigger.java:161)
at weblogic.time.server.ScheduledTrigger.execute(ScheduledTrigger.java:38)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:152)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:133)
We are using HP-UX 11.0 and the value for ulimit is unlimited

Hi Everyone,
Just thought I would give an update on this.
While we're still deploying http://support.microsoft.com/kb/2733363/en-us to
the remainder of our Windows 7 SP1 fleet, according to some Network Traces and XPerf that were sent to MS Support, it looks as though the issu with the Offline Files is now resolved.
However, we are still having some issues with High CPU with the System Process in particular. Upon review of the traces, they have found a lot of ABE related traffic, leading them to believe that the issue may also be caused by ABE Access on our File Cluster.
We already have the required hotfix for ABE on 2008 R2 installed (please see
http://support.microsoft.com/kb/2732618/en-us), although we have it set to a certain value that MS believe may be too high. Our current value is set to "5", as that is the lowest level of any type of permission is set (i.e. where the lowest level of inheritance
is broken).
I think I will mark this as resolved regarding the Offline Files issue (as it did resolve the problem with the Offline Files)...
Fingers crossed we can identify the rest of the high load within the System Process!!!

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