PM19992: CONCURRENTMODIFICATIONEXCEPTION AFTER USING ITERATOR.REMOVE() METHOD ON SDO/X LISTS

APAR status

• Closed as program error.

Error description

• ConcurrentModificationException after using Iterator.remove()
  method on SDO/X Lists
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  Users of IBM WebSphere Application Server   *
  *                  v7 Feature Pack for Service Component       *
  *                  Architecture (SCA) Refresh Pack v1.0.1 and  *
  *                  WebSphere Process Server v7.0               *
  ****************************************************************
  * PROBLEM DESCRIPTION: ConcurrentModificationException after   *
  *                      using Iterator.remove() method          *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  A ConcurrentModificationException may occur after using the
  Iterator.remove() on an Iterator for an SDO/X List when the
  Iterator.hasNext() or Iterator.next() method is used.
  

Problem conclusion

• The exception occurred because the Iterator.remove() method
  triggered additional structural changes (beyond the removal of
  a single element) to the List such that the Iterator observed
  more modifications than expected and raised the exception. The
  SDO/X List implementations have been updated such that these
  additional structural changes are no longer necessary and the
  Iterator.remove() method can be used safely.
  
  APAR PM19992 is currently targeted for inclusion in Service
  Level (Fix Pack) 1.0.1.7 of WebSphere Application Server v7
  Feature Pack for Service Component Architecture (SCA) Refresh
  Pack. 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

  WAS SCA FEATURE

• Fixed component ID

  5724J0854

Applicable component levels

• R700 PSY

     UP