PI80822: NULLPOINTEREXCEPTION THROWN WHEN REQUESTING CONNECTIONS TO A RAR FROM SEVERAL THREADS

Fixes are available

APAR status

Closed as program error.

Error description

When 2 or more concurrent threads attempt to obtain connections
from a resource adapter (RAR), the following
NullPointerException error may be generated...

[4/18/17 3:18:54:905 CEST] 000000a8 BusinessExcep E
CNTR0019E: EJB threw an unexpected (non-declared) exception
during invocation of method "testMethod". Exception data:
com.ibm.websphere.csi.CSIException: ; nested exception is:
javax.resource.ResourceException: Reassociate call Failed
  at
com.ibm.ejs.container.BeanO.reAssociateHandleList(BeanO.java:194
7)
  at
com.ibm.ejs.container.EJBThreadData.pushCallbackBeanO(EJBThreadD
ata.java:215)
  at
com.ibm.ejs.container.EJSHome.createBeanO(EJSHome.java:1332)
  at
com.ibm.ejs.container.EJSHome.createBeanO(EJSHome.java:1373)
  at
com.ibm.ejs.container.activator.UncachedActivationStrategy.atAct
ivate(UncachedActivationStrategy.java:89)
  at
com.ibm.ejs.container.activator.Activator.preInvokeActivateBean(
Activator.java:324)
  at
com.ibm.ejs.container.EJSContainer.preInvokeActivate(EJSContaine
r.java:3733)
  at
com.ibm.ejs.container.EJSContainer.EjbPreInvoke(EJSContainer.jav
a:3047)
  at
test.mytest.adapter.core.EJSmylocaltestBean_39252874.testMethod(
EJSmylocaltestBean_39252874.java)
  at TestBean$MyThread.run(testBean.java:45)
Caused by: javax.resource.ResourceException: Reassociate call
Failed
  at com.ibm.ejs.j2c.HandleList.reAssociate(HandleList.java:306)
  at
com.ibm.ejs.container.BeanO.reAssociateHandleList(BeanO.java:194
3)
  ... 9 more
Caused by: java.lang.NullPointerException
  at
com.ibm.ejs.j2c.FreePool.getMCWrapperFromMatch(FreePool.java:202
0)
  at
com.ibm.ejs.j2c.FreePool.getFreeConnection(FreePool.java:919)
  at com.ibm.ejs.j2c.PoolManager.reserve(PoolManager.java:3539)
  at com.ibm.ejs.j2c.PoolManager.reserve(PoolManager.java:3095)
  at
com.ibm.ejs.j2c.ConnectionManager.allocateMCWrapper(ConnectionMa
nager.java:1548)
  at
com.ibm.ejs.j2c.ConnectionManager.reAssociate(ConnectionManager.
java:2226)
  at com.ibm.ejs.j2c.HandleList.reAssociate(HandleList.java:272)
  ... 10 more

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  All users of IBM WebSphere Application      *
*                  Server using connection management          *
*                  reAssociate                                 *
****************************************************************
* PROBLEM DESCRIPTION: A null pointer exception can occur in   *
*                      the connection manager reAssociate      *
*                      code path                               *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
For some application when associate and reassociate and being
used a null point expcetion can occur.
Caused by: java.lang.NullPointerException
at
com.ibm.ejs.j2c.FreePool.getMCWrapperFromMatch(FreePool.java:202
0)
at
com.ibm.ejs.j2c.FreePool.getFreeConnection(FreePool.java:919)
at com.ibm.ejs.j2c.PoolManager.reserve(PoolManager.java:3539)
at com.ibm.ejs.j2c.PoolManager.reserve(PoolManager.java:3095)
at
com.ibm.ejs.j2c.ConnectionManager.allocateMCWrapper(ConnectionMa
nager.java:1548)
at
com.ibm.ejs.j2c.ConnectionManager.reAssociate(ConnectionManager.
java:2226)
at com.ibm.ejs.j2c.HandleList.reAssociate(HandleList.java:272)

Problem conclusion

The null point has been fixed for this code path and will not
occur.

The fix for this APAR is currently targeted for inclusion in
fix pack 8.5.5.13 and 9.0.0.5.  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
PI80822
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
850
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2017-05-01
Closed date
2017-05-23
Last modified date
2017-05-23

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

R850 PSY
UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.5","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
04 May 2022

Tips

PI80822: NULLPOINTEREXCEPTION THROWN WHEN REQUESTING CONNECTIONS TO A RAR FROM SEVERAL THREADS

Fixes are available

Subscribe

APAR status

Closed as program error.

Error description

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

APAR number

Reported component name

Reported component ID

Reported release

Status

PE

HIPER

Special Attention

Submitted date

Closed date

Last modified date

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

Fixed component ID

Applicable component levels

R850 PSY

Document Information

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