PK15242: JDK APAR: OUTOFMEMORY ERROR IN JAVA.IO.BYTEARRAYOUTPUTSTREAM

APAR status

• Closed as program error.

Error description

• Java throws an OutOfMemory error when federation of a node
  is done using addNode.sh script in a WAS environment. The
  stack trace looks like this:
  JVMST105: Unable to allocate an array object, Array
  element exceedes IBM JDK limit of 268435455 elements
  Exception in thread "main" java.lang.OutOfMemoryError:
  JVMCI156:OutOfMemoryError, IBMJVM_ResizeArray -
  stAllocArray for new array failed
  at com.ibm.jvm.ExtendedSystem.resizeArray
  at java.io.ByteArrayOutputStream.write
  at sun.net.www.http.PosterOutputStream.write
  at java.io.DataOutputStream.write
  at java.util.zip.DeflaterOutputStream.deflate
  at java.util.zip.DeflaterOutputStream.write
  at java.util.zip.GZIPOutputStream.write
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: WebSphere Application Server version 6.02    *
  *                 users                                        *
  ****************************************************************
  * PROBLEM DESCRIPTION: OutofMemory error using AddNode.sh to   *
  *                      federate a node                         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Java program throws an OutOfMemory error when federation
  of a node is done using addNode.sh script in the WebSphere
  Application Server environment. The stack trace looks like
  this:
  JVMST105: Unable to allocate an array object, Array
  element exceedes IBM JDK limit of 268435455 elements
  Exception in thread "main" java.lang.OutOfMemoryError:
  JVMCI156:OutOfMemoryError, IBMJVM_ResizeArray -
  stAllocArray for new array failed
  at com.ibm.jvm.ExtendedSystem.resizeArray
  at java.io.ByteArrayOutputStream.write
  at sun.net.www.http.PosterOutputStream.write
  at java.io.DataOutputStream.write
  at java.util.zip.DeflaterOutputStream.deflate
  at java.util.zip.DeflaterOutputStream.write
  at java.util.zip.GZIPOutputStream.write
  

Problem conclusion

• addNode operation with the includeapps option performs
  transfer of application files that have very large EAR
  files of size of almost running into 150MB being
  deployed. This happens due to improper algorithm in
  ByteArrayOutputStream that doubles the size of the
  allocation request and sends the request down to the
  JVM. The size after the doubling, will be greater than
  256MB in size and a byte array of size greater than
  256MB is not supported on a 1.4.2 32-bit JVM.
  .
  To obtain the fix:
  - Install build 20051108 or later
  - Upgrade WebSphere 5.1.x to 5.1.1.8 when available.
  - Upgrade WebSphere Application Server 6.0.X to 6.0.2.5 when
  available.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  PK14592

• APAR is sysrouted TO one or more of the following:

Modules/Macros

•    JDK
  

Fix information

• Fixed component name

  WEBSPH APP SERV

• Fixed component ID

  5724J0800

Applicable component levels

• R60A PSY

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