PM11539: ISSUE WITH THE JNDI CONFIGURATION FAILING WITH NULL POINTER EXCEPTION WHEN SETTING A PROPERTY.

Fixes are available

APAR status

Closed as program error.

Error description

Customer is trying  to interface the WebSphere Application
Server to a Cache2009 database management system. After the
application server creates the connection to the Cache DBMS, it
throws a NullPointerException when the application server then
tries to set a property.  This occurs after the connection has
been made successfully with the database.
.
The problem they see is:
.
E UOW=null
source=com.ibm.ejs.j2c.FreePool org=IBM prod=WebSphere
component=Application Server thread=[server.startup : 0]
          J2CA0046E: Method createManagedConnectionWithMCWrapper
caught
an exception during creation of the ManagedConnection for
resource
jdbc/cacheDataSource, throwing ResourceAllocationException.
Original
exception: <=================================>Exception Message
-> null
java.lang.NullPointerException
 at java.util.Hashtable.put(Unknown Source)
 at java.util.Properties.setProperty(Unknown Source)
.
They wrote their own datastore helper class; its name is:
com.med.database.helper.CacheDataStoreHelper.java
.
&#65530; When using the Cache 2007 driver with a Cache 2007 or 2009
database, and the CacheDataStoreHelper everything works
correctly.

&#65530; When using the Cache 2009 driver with a Cache 2009 database,
the CacheDataStoreHelper is loaded, but fails in WebSphere
InternalGenericDataStoreHelper with the nullpointer exception.
&#65530; When using the Cache 2009 driver with a Cache 2007 database,
Cache returns a specific error code and the two are not
compatible.
.
In this case, after L3 had a look at the traces sent, they made
the following
- The NullPointerException is thrown because, the
  DatabaseMetadata.getClientInfoProperties method
  is returning a resultset object that contains
  null references.

  The information on the getClientInfoProperties() is documented
  here at the following location..
 http://java.sun.com/javase/6/docs/api/java/sql/DatabaseMetaData
.ht
 ml#getClientInfoProperties(
 I would like to request customer to revisit the cache driver
 implementation and see that the resultset object holding
 ClientInfoProperties is held with proper(not null) data.
.
Customer made rebutle on the matter and the PMR sent back to L3.
L3 then requested APAR.

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  All users of IBM WebSphere Application Server
****************************************************************
* PROBLEM DESCRIPTION: Websphere Application Server throws     *
*                      NullPointerException when configured    *
*                      with Cache jdbc driver.                 *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
The Relational Resource Adapter(RRA) captures metadata as a
part of serving the getConnection(..) request. When it
reads few of the metadata properties as NULL and the same are
tried to store in a map, a NullPointerException will be thrown
as shown below.

java.lang.NullPointerException
at java.util.Hashtable.put(Unknown Source)
at java.util.Properties.setProperty(Unknown Source)
at
com.ibm.ws.rsadapter.spi.InternalGenericDataStoreHelper.gatherAn
dDisplayMetaDataInfo(InternalGenericDataStoreHelper.java:1123)
at
com.ibm.ws.rsadapter.spi.WSRdbDataSource.postGetConnectionHandli
ng(WSRdbDataSource.java:2526)

Problem conclusion

The problem is fixed by modifying the code that now handles
the case where metadata could be NULL.

The fix for this APAR is currently targeted for inclusion in
fix pack 7.0.0.13.  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
PM11539
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2010-04-05
Closed date
2010-05-25
Last modified date
2010-05-25

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

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
25 October 2021

Tips

PM11539: ISSUE WITH THE JNDI CONFIGURATION FAILING WITH NULL POINTER EXCEPTION WHEN SETTING A PROPERTY.

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

R700 PSY

Document Information

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