PI57463: OUTOFMEMORY GENERATED WITH 64K "COM.IBM.XML.XLXP2.SCAN.UTIL.DATABUFFER" OBJECTS

8.5.5.10: WebSphere Application Server V8.5.5 Fix Pack 10
8.5.5.11: WebSphere Application Server V8.5.5 Fix Pack 11
8.0.0.13: WebSphere Application Server V8.0 Fix Pack 13
8.5.5.12: WebSphere Application Server V8.5.5 Fix Pack 12
8.0.0.14: WebSphere Application Server V8.0 Fix Pack 14
8.5.5.13: WebSphere Application Server V8.5.5 Fix Pack 13
8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
8.5.5.21: WebSphere Application Server V8.5.5.21

APAR status

• Closed as program error.

Error description

• An OutOfMemory is generated and the heapdump will show that the
  largest memory user is
  "com.ibm.xml.xlxp2.jaxb.unmarshal.impl.JAXBDocumentScanner"
  which contains "com.ibm.xml.xlxp2.scan.util.DataBuffer"
  objects.
  
  
  The problem does not affect UTF-8 encoding, but affects ASCII
  and others. The problem occurs when CRLF sequence is split in
  between two buffers.
  
  Smaller buffer sizes (64k default) is likely to increase
  chances of problem occurring.
  
  The issue was identified on WebSpere Application Server
  Network Deployment edition, V8.5.5
  The fix will be included in both V8.5 and V8.0 releases
  

Local fix

• Use UTF-8 instead of ASCII OR
  If using ASCII increase the buffer size to larger than 64k
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server. The problem does not affect UTF-8   *
  *                  encoding, but affects ASCII and others      *
  ****************************************************************
  * PROBLEM DESCRIPTION: Out of memory error with large number   *
  *                      of                                      *
  *                      com.ibm.xml.xlxp2.scan.util.DataBuffer  *
  *                      objects using XLXP parser               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The problem does not affect UTF-8 encoding, but affects ASCII
  and others. Problem occurs when CRLF line breaks are used in
  some circumstances.
  

Problem conclusion

• Code was modified to correctly handle CRLF line breaks with
  ASCII and other encodings.
  
  The fix for this APAR is currently targeted for inclusion in
  fix packs 8.0.0.13 and 8.5.5.10.  Please refer to the
  Recommended Updates page for delivery information:
  http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
  

Temporary fix

• 1. Do not use CRLF line endings (convert to LF or CR only)
  2. Setting
  com.ibm.xml.xlxp2.api.util.encoding.DataSourceFactory.bufferLeng
  
  to larger number may reduce occurrences of the problem.
  

Comments

APAR Information

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

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

Fix information

• Fixed component name

  WEBS APP SERV N

• Fixed component ID

  5724H8800

Applicable component levels

• R800 PSY

     UP

• R850 PSY

     UP