PI75106: DATASOURCE CONNECTION LEAK ISSUE DUE TO NULLPOINTEREXCEPTION IN COM.IBM.EJS.J2C.FREEPOOL$EQUALS.RUN

7.0.0.43: WebSphere Application Server V7.0 Fix Pack 43
7.0.0.45: WebSphere Application Server V7.0 Fix Pack 45
7.0.0.45: Java SDK 1.6 SR16 FP60 Cumulative Fix for WebSphere Application Server
7.0.0.43: Java SDK 1.6 SR16 FP41 Cumulative Fix for WebSphere Application Server

APAR status

• Closed as program error.

Error description

• When WAS.j2c trace is enabled and a sharable connection is
  used, you might see the following NPE in SystemErr.log.
  
  SystemErr     R   java.lang.NullPointerException
  SystemErr     R    at
  com.ibm.ejs.j2c.FreePool$Equals.run(FreePool.java:2739)
  
  And if you check the connection pool, "Total number of
  connections" will increase every time when the NPE is
  thrown although the total of in-use and free does not
  increase.
  

Local fix

• disable WAS.j2c trace.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server                                      *
  ****************************************************************
  * PROBLEM DESCRIPTION: A connection leak issue can occur       *
  *                      when using shared connections with      *
  *                      WAS.j2c trace enabled.                  *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  With WAS.j2c trace enabled and shared connections being used,
  a NullPointerException can occur, causing the total number of
  connections to increase even though the total of in-use and
  free connections does not increase.
  

Problem conclusion

• This was previously fixed in V8.0 and beyond to check for and
  properly handle the NullPointerException. This fix has been
  backported to V7.0.
  
  The fix for this APAR is currently targeted for inclusion in
  fix pack 7.0.0.43.  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

  WEBS APP SERV N

• Fixed component ID

  5724H8800

Applicable component levels

• R700 PSY

     UP