PM62502: Multiple versions of some classes/jars running at the same time might cause profiling to fail

Rational Application Developer for WebSphere Software 8.5
Rational Software Architect Interim Fix 1 for 8.0.4.2
Rational Software Architect for WebSphere Software Interim Fix 1 for 8.0.4.2

APAR status

• Closed as program error.

Error description

• Abstract:
  
  Attempts to profile an application containing multiple versions
  of the same class might result in an exception; however, it does
  not give an error indicating there are duplicate classes.
  
  Problem:
  
  If you attempt to profile an application that contains multiple
  copies of the same class then the following exception might
  occur:
  
  java.lang.ArrayIndexOutOfBoundsException
          at
  com.ibm.rational.llc.engine.instrumentation.ServerFileStreamData
  Collector.executableUnitAccessed(ServerFileStreamDataCollector.j
  ava:242)
  ...
  
  Local fix:
  
  If you intend to be running multiple versions of the same class,
  the workaround is to iteratively filter the duplicated classes
  from the coverage set:
  
  1. Examine the stacktrace to determine the problematic class.
  2. Add a filter which excludes that class, and classes related
  to it.
  3. Try again. If a new exception occurs, repeat from step 1.
  
  For example if the stack trace points to mypackage.MyClass:
  
  java.lang.ArrayIndexOutOfBoundsException
          at
  com.ibm.rational.llc.engine.instrumentation.ServerFileStreamData
  Collector.executableUnitAccessed(ServerFileStreamDataCollector.j
  ava:242)
          at llc_probe$Probe_0._executableUnit(llc_probe.java:28)
          at mypackage.MyClass.put(OgnlContext.java:540) ????????
  THE PROBLEMATIC CLASS IS FOUND HERE
  
  For this class you can exclude all of mypackage.*.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Code Coverage engine does not handle ClassLoader scoped
  multiple conflicting definitions of the same class.
  

Problem conclusion

• A warning message will be logged to prevent the crash. The
  fix for this APAR is included in Rational Application
  Developer v8.0.4.1.
  

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

  RATL APP DEV WI

• Fixed component ID

  5724J1901

Applicable component levels

• R750 PSN

     UP