on 05-07-2008 1:43 PM
Hi there,
playing around some more with MAT I ran into the following error with some of my dumps. All were taken on 1.5 SUN JVMs (running on either Solaris or Linux).
org.eclipse.mat.snapshot.SnapshotException: Error: 0x8d776450 is used as class and object simultaneously. Are you using a beta DLL for Sun JDK 1.4.2 to write the heap dump?
at org.eclipse.mat.hprof.HprofParserHandlerImpl.createRequiredFakeClasses(HprofParserHandlerImpl.java:191)
at org.eclipse.mat.hprof.HprofParserHandlerImpl.beforePass2(HprofParserHandlerImpl.java:89)
at org.eclipse.mat.hprof.HprofIndexBuilder.fill(HprofIndexBuilder.java:76)
at org.eclipse.mat.parser.internal.SnapshotFactoryImpl.parse(SnapshotFactoryImpl.java:183)
at org.eclipse.mat.parser.internal.SnapshotFactoryImpl.openSnapshot(SnapshotFactoryImpl.java:101)
at org.eclipse.mat.snapshot.SnapshotFactory.openSnapshot(SnapshotFactory.java:77)
at org.eclipse.mat.ui.internal.ParseHeapDumpJob.run(ParseHeapDumpJob.java:52)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
Since the suggested problem (usage of JDK 1.4.2) is not the case: What else can I do to find out what is going on? Do I need any special switches for jmap? The dumps all were taken with the same command:
jmap -heap:format=b <pid>
Still, some work, some do not. Any suggestions?
bye, Michael
Hi Michael,
this smells like a bug. The easiest way again is to have a look at the dump. If you zip it, it should become smaller. I could also provide upload space. Right now, I am at the J1 in San Francisco so it might not be as easy for me to fix this.
Andreas.
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