PM61500: External Installation of ant 1.8.2 installation fails intermittently on Rational Application Developer 8.0.x

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 use Ant 1.8.2 in Rational Application developer may
  cause sporadic failures.
  
  Problem:
  
  Configuring Rational Application Developer 8.0.x to use an
  external installation of Ant rather than the internally shipped
  version can result in intermittent occurrence of an error like
  the following and may prevent ant tasks execution:
  
  Java Model Exception: Java Model Status [MyProject does not
  exist]
      at org.eclipse.core.runtime.CoreException.?init?(Unknown
  Source)
   at org.eclipse.core.runtime.CoreException.?init?(Unknown
  Source)
   at org.eclipse.jdt.core.JavaModelException.?init?(Unknown
  Source)
   at
  org.eclipse.jdt.internal.core.JavaElement.newNotPresentException
  (Unknown
  Source)
   at
  org.eclipse.jdt.internal.core.JavaModelManager.getPerProjectInfo
  CheckExistence(Unknown
  Source)
   at
  org.eclipse.jdt.internal.core.JavaProject.getPerProjectInfo(Unkn
  own
  Source)
   at
  org.eclipse.jdt.internal.core.JavaProject.getRawClasspath(Unknow
  n
  Source)
   at
  com.ibm.rational.llc.internal.core.util.ProjectUtils.getInstrume
  ntedProjectsOnClassPath(Unknown
  Source)
   at
  com.ibm.rational.llc.internal.ui.util.LaunchConfigurationUtils.i
  sInstrumentedProjectInLaunch(Unknown
  Source)
   at
  com.ibm.rational.llc.internal.ui.launch.CoverageLaunchManager$Co
  verageLaunchesListener.launchesAdded(Unknown
  Source)
  ...
  
  Local fix:
  
  Restarting the workspace when this error occurs is the only
  work-around.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Configuring Rational Application Developer 8.0.x to use an
  external installation of Ant rather than the internally
  shipped version can result in intermittent Java Model
  exception.
  

Problem conclusion

• The cause of the Java model exception had been fixed.  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

• R803 PSN

     UP