PI29073: OUT OF MEMORY ERROR USING COM.IBM.XLTXE.MM1MFCG.BEL.FCGMETHODGENBCEL

8.0.0.10: WebSphere Application Server V8.0 Fix Pack 10
8.5.5.5: WebSphere Application Server V8.5.5 Fix Pack 5
8.5.5.6: WebSphere Application Server V8.5.5 Fix Pack 6
8.0.0.11: WebSphere Application Server V8.0 Fix Pack 11
8.5.5.7: WebSphere Application Server V8.5.5 Fix Pack 7
8.5.5.8: WebSphere Application Server V8.5.5 Fix Pack 8
8.0.0.12: WebSphere Application Server V8.0 Fix Pack 12
8.5.5.9: WebSphere Application Server V8.5.5 Fix Pack 9
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
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
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

• The com.ibm.xltxe.mm1mfcg.bel.FcgMethodGenBCEL object occupies
  a large amount of heap.
  
  This happens when there are many match statements in the
  stylesheet that apply to the templates method that get
  generated, this can exceed the Java method size limit when
  using the compileXSLT method from XCompilationFactory in order
  to pass in compilation parameters (XCompilationParameters).
  The 'compileXSLT' method always uses the compiler, since only
  the compiler can generate bytecodes/classes. The 'prepareXSLT'
  method will return an executable that could be cached and
  re-used and whether interpreter or compiler is to be used to
  create the executable can be controlled by XStaticContext's
  setUseCompiler method.
  

Local fix

• Customers can use the interpreter by not setting the use
  compiler setting or setting it to false:
  XStaticContext sc = factory.newStaticContext();
  sc.setUseCompiler(false);
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server                                      *
  ****************************************************************
  * PROBLEM DESCRIPTION: Out of memory error when compiling a    *
  *                      stylesheet with many match statements.  *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  An out of memory error can occur when compiling a stylesheet
  that contains many match statements using either the
  XCompilationFactory or XFactory.prepareXSLT where the
  XStaticContext passed in has setUseCompiler set to true.  If
  setUseCompiler is false (the default) then the interpreter is
  used and this problem does not occur.
  

Problem conclusion

• The problem is fixed under a new system property.  To enable
  the fix set the
  com.ibm.xltxe.rnm1.xtq.processor.alternateApplyTemplatesHandling
   system property to true, for example:
  -Dcom.ibm.xltxe.rnm1.xtq.processor.alternateApplyTemplatesHandli
  ng=true.  The fix may have a minor effect on the performance
  of the compiled stylesheet so only use when necessary.
  
  The fix for this APAR is currently targeted for inclusion in
  fix packs 8.0.0.10 and 8.5.5.5.  Please refer to the
  Recommended Updates page for delivery information:
  http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
  

Temporary fix

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

  WEBSPHERE APP S

• Fixed component ID

  5724J0800

Applicable component levels

• R800 PSY

     UP

• R850 PSY

     UP