Java application "java.lang.OutOfMemoryError: Java heap space"

Solution Verified - Updated -

Issue

  • JBoss Application server stops accepting incoming requests.
  • The following message appears in the JBoss server.log  file :

        ERROR [STDERR] java.lang.OutOfMemoryError: Java heap space 
    
  • The following log message appears in the JBoss Operations Network (JON) server log:

            Caused by: java.lang.OutOfMemoryError: Java heap space
            ERROR [STDERR] Exception in thread "RMI TCP Connection(44627)-127.0.0.1"
            ERROR [STDERR] java.lang.OutOfMemoryError: Java heap space
  • We would like to root cause analysis of the heap dump generated by one of our application (GRCC) and would like to get some recommendation on heap size parameter setting.

Environment

  • Java (all vendors)

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