PI97372: INTERMITTENT J2CA0046E/NULLPOINTEREXCEPTION WHEN OBTAINING A CONNECTION FROM DATASOURCE

8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
9.0.0.9: WebSphere Application Server traditional V9.0 Fix Pack 9
9.0.0.10: WebSphere Application Server traditional V9.0 Fix Pack 10
8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
9.0.0.11: WebSphere Application Server traditional V9.0 Fix Pack 11
9.0.5.0: WebSphere Application Server traditional Version 9.0.5 Refresh Pack
9.0.5.1: WebSphere Application Server traditional Version 9.0.5 Fix Pack 1
9.0.5.2: WebSphere Application Server traditional Version 9.0.5 Fix Pack 2
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
9.0.5.3: WebSphere Application Server traditional Version 9.0.5 Fix Pack 3
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
8.5.5.21: WebSphere Application Server V8.5.5.21

APAR status

• Closed as program error.

Error description

• When application tries to get a connection from datasource, it
  might fail intermittently with the following error:
  [16.04.18. 15:30:49:211 CEST] 000002ae FreePool      E
  J2CA0046E: Method createManagedConnectionWithMCWrapper caught
  an exception during creation of the ManagedConnection for
  resource xxxxxx, throwing ResourceAllocationException. Original
  exception: <=================================>Exception Message
  -> null
  java.lang.NullPointerException
   at
  com.ibm.ws.rsadapter.spi.WSManagedConnectionFactoryImpl.createMa
  nagedConnection(WSManagedConnectionFactoryImpl.java:1507)
   at
  com.ibm.ws.rsadapter.spi.WSManagedConnectionFactoryImpl.createMa
  nagedConnection(WSManagedConnectionFactoryImpl.java:1113)
   at
  com.ibm.ejs.j2c.FreePool.createManagedConnectionWithMCWrapper(Fr
  eePool.java:2161)
   at
  com.ibm.ejs.j2c.FreePool.createOrWaitForConnection(FreePool.java
  :1839)
   at
  com.ibm.ejs.j2c.PoolManager.reserve(PoolManager.java:3818)
   at
  com.ibm.ejs.j2c.PoolManager.reserve(PoolManager.java:3094)
   at
  com.ibm.ejs.j2c.ConnectionManager.allocateMCWrapper(ConnectionMa
  nager.java:1548)
   at
  ....
  com.ibm.ejs.j2c.ConnectionManager.allocateConnection(ConnectionM
  anager.java:1031)
   at
  com.ibm.ws.rsadapter.jdbc.WSJdbcDataSource.getConnection(WSJdbcD
  ataSource.java:644)
   at
  com.ibm.ws.rsadapter.jdbc.WSJdbcDataSource.getConnection(WSJdbcD
  ataSource.java:611)
  

Local fix

• Restart the jvm
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server using jdbc resource adapter          *
  ****************************************************************
  * PROBLEM DESCRIPTION: Null point exception occurs on a        *
  *                      transient object that was not           *
  *                      initialized when resource               *
  *                      adapter object is serialized.           *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When application tries to get a connection from datasource, it
  might fail intermittently with the following error:
  [16.04.18. 15:30:49:211 CEST] 000002ae FreePool      E
  J2CA0046E: Method createManagedConnectionWithMCWrapper caught
  an exception during creation of the ManagedConnection for
  resource xxxxxx, throwing ResourceAllocationException. Original
  exception: <=================================>Exception Message
  -> null
  java.lang.NullPointerException
  at
  com.ibm.ws.rsadapter.spi.WSManagedConnectionFactoryImpl.createMa
  nagedConnection(WSManagedConnectionFactoryImpl.java:1507)
  at
  com.ibm.ws.rsadapter.spi.WSManagedConnectionFactoryImpl.c
  

Problem conclusion

• Transient object is now initialized avoiding the null pointer
  exception.
  
  The fix for this APAR is currently targeted for inclusion in
  fix pack 8.5.5.14 and 9.0.0.9.  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

  WEBSPHERE APP S

• Fixed component ID

  5724J0800

Applicable component levels

• R850 PSY

     UP

• R900 PSY

     UP