PH51659: INDEXOUTOFBOUNDSEXCEPTION CAN OCCUR DURING A RESOURCE OUTAGE

APAR status

• Closed as program error.

Error description

• java.lang.IndexOutOfBoundsException can occur during a back end
  resource outage. During an outage connections can be marked to
  be destroyed and should not be reused. The FreePool code is
  removing the bad connection, but its matching with the same
  connection. Since its a match, it tries to remove the connection
  again, resulting in the exception.
  
  java.lang.IndexOutOfBoundsException: Index: #, Size: #
  	at java.util.ArrayList.rangeCheck(ArrayList.java:670)
  	at java.util.ArrayList.remove(ArrayList.java:509)
  	at
  com.ibm.ejs.j2c.FreePool.getFreeConnection(FreePool.java:995)
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server using resource adapters              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Index out of bounds exception can       *
  *                      occur for connections marked to be      *
  *                      destroyed.                              *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  For some connections when they are marked to be destroyed and
  to be removed from the connection pool, the follow exception
  may occur.
  java.lang.IndexOutOfBoundsException: Index: #, Size: #
  at java.util.ArrayList.rangeCheck(ArrayList.java:670)
  at java.util.ArrayList.remove(ArrayList.java:509)
  at
  com.ibm.ejs.j2c.FreePool.getFreeConnection(FreePool.java:995)
  

Problem conclusion

• The code has been change to avoid the index out of bounds
  exception.
  
  The fix for this APAR is targeted for inclusion in fix pack
  8.5.5.24 and 9.0.5.15. For more information, see 'Recommended
  Updates for  WebSphere Application Server':
  https://www.ibm.com/support/pages/node/715553
  

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

  WEBS APP SERV N

• Fixed component ID

  5724H8800

Applicable component levels