IBM Support

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

Subscribe

You can track all active APARs for this component.

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 number

    PI75106

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-01-18

  • Closed date

    2017-04-05

  • Last modified date

    2017-04-05

  • 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



Document information

More support for: WebSphere Application Server
General

Software version: 7.0

Reference #: PI75106

Modified date: 05 April 2017