Weblogic startup problem

Hi,
I am getting following error while starting weblogic server
Unexpected Signal : 11 occurred at PC=0x40170bc5
Function name=fill_in_stack_trace__19java_lang_ThrowableG6HandleP6Thread
Library=/bea/jdk131/jre/lib/i386/client/libjvm.so
Current Java thread:
at java.lang.Throwable.fillInStackTrace(Native Method)
at java.lang.Throwable.<init>(Throwable.java:78)
at java.lang.Error.<init>(Error.java:37)
at java.lang.LinkageError.<init>(LinkageError.java:29)
at
java.lang.IncompatibleClassChangeError.<init>(IncompatibleClassChangeError.java:29)
at java.lang.AbstractMethodError.<init>(AbstractMethodError.java:30)
Environment : Weblogic 6.0 Sp2 on Linux Red hat 7.1
Please reply [email protected]
TIA
Ashwani

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