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Thread: java.lang.OutOfMemoryError

  1. #1
    Expert Oracle Administrator
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    java.lang.OutOfMemoryError

    APPS - java.lang.OutOfMemoryError

    ISSUE:

    ------ "OACoreGroup.0.stderr" ---------

    java.lang.OutOfMemoryError


    ------ OACoreGroup.0.stdout ---------

    [GC 112406K->59972K(128832K), 0.1090205 secs]
    [Full GC 66317K->48528K(140088K), 1.2714837 secs]
    [Full GC 51633K->48876K(140664K), 0.9914099 secs]
    [Full GC 48894K->48886K(140680K), 0.9736370 secs]
    [Full GC 48926K->48895K(140696K), 0.9765178 secs]


    SOLUTION:

    Increase JVM memory size to reduce Full GC (Garbage Collection)
    we now have one Full GC once a week from one every 10-15 minutes.

    midtier01.applmgr->vi /u01/app/applmgr/product/iAS_115102/Apache/Jserv/etc/jserv.properties

    wrapper.bin.parameters=-Xms1024M -Xmx1024M -XX:NewSize=128M -XX:MaxNewSize=128M -XX:PermSize=128M -XX:MaxPermSize=128M -verbose:gc

    Here's how to test the max heap size that your JVM can support:

    midtier01.applmgr->java -mx3000m -version
    java version "1.3.1_16"
    Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1_16-b06)
    Java HotSpot(TM) Client VM (build 1.3.1_16-b06, mixed mode)

    ## now note the error below
    ##
    midtier01.applmgr->java -mx6000m -version
    Invalid maximum heap size: -Xmx6000m
    Could not create the Java virtual machine.
    midtier01.applmgr->

    midtier01.applmgr->java -mx2000m -version
    java version "1.3.1_16"
    Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1_16-b06)
    Java HotSpot(TM) Client VM (build 1.3.1_16-b06, mixed mode)
    midtier01.applmgr->


    To Increase the JVM Memory , Refer to : 11i-R12-increase-JVM-Count-and-Memory
    Last edited by Hemant; 12-10-2011 at 01:35 AM.
    Regards,
    -Amit

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