PI54230: ClassNotFoundException when using generic RA in Liberty

Fixes are available

APAR status

Closed as program error.

Error description

A Generic RA needs to be used to wrap a simple JMS client
(the
JMS provider does not supply an RA) so that it can be
activated
in Liberty 8.5.5.6.  However, an issue has
been identified in Liberty's third-party JMS RA support,
which
means the specified in the element is not
available when the MDB is activated.

For example, (wrapping the MQ JMS client as though it had no
RA) a configuration like this...

<resourceAdapter id="GenericRA"
location="${shared.resource.dir}
/genericra.rar" autoStart="true">


<fileset dir="${shared.resource.dir}/mqlib"
includes="*.jar"/>


<properties.GenericRA
RMPolicy="OnePerPhysicalConnection"
ProviderIntegrationMode="jndi"
SupportsXA="true"
LogLevel="ALL"

JndiProperties="java.naming.factory.url.pkgs=com.ibm.mq.jms.
nami
ng,
java.naming.factory.initial=com.sun.jndi.fscontext.RefFSCont
extF
actory,
java.naming.provider.url=file:${shared.resource.dir}/jndicon
text
"
/>



<properties.GenericRA
DestinationJndiName="InboundJMSDestination"
DestinationType="javax.jms.Queue"

ConnectionFactoryJndiName="InboundJMSConnectionFactory" />


...results in an ClassNotFoundException when the activation
specification is applied...

Exception = java.lang.ClassNotFoundException
Source =
com.ibm.ws.jndi.internal.WASInitialContextFactoryBuilder
probeid = 57
Stack Dump = java.lang.ClassNotFoundException:
com.sun.jndi.fscontext.
RefFSContextFactory
at
com.ibm.ws.classloading.internal.UnifiedClassLoader.findClas
s
(UnifiedClassLoader.java:118)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at
com.ibm.ws.classloading.internal.UnifiedClassLoader.loadClas
s0
(UnifiedClassLoader.java:106)
at
com.ibm.ws.classloading.internal.UnifiedClassLoader$Delegati
on.
loadClass(UnifiedClassLoader.java:77)
at
com.ibm.ws.classloading.internal.UnifiedClassLoader.loadClas
s
(UnifiedClassLoader.java:101)
at
com.ibm.ws.classloading.internal.ThreadContextClassLoader.lo
adCl
ass
(ThreadContextClassLoader.java:110)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at com.ibm.ws.jndi.internal.WASInitialContextFactoryBuilder.
createInitialContextFactory(WASInitialContextFactoryBuilder.
java
:55)
at
org.apache.aries.jndi.ContextHelper.getInitialContextUsingBu
ilde
r
(ContextHelper.java:233)
at org.apache.aries.jndi.ContextHelper.getContextProvider
(ContextHelper.java:208)
at
org.apache.aries.jndi.ContextHelper.getInitialContext(Contex
tHel
per.
java:141)
at org.apache.aries.jndi.OSGiInitialContextFactoryBuilder.
getInitialContext(OSGiInitialContextFactoryBuilder.java:51)
at
javax.naming.spi.NamingManager.getInitialContext(NamingManag
er.j
ava:
684)
at
javax.naming.InitialContext.getDefaultInitCtx(InitialContext
.jav
a:
313)
at javax.naming.InitialContext.init(InitialContext.java:244)
at javax.naming.InitialContext.(InitialContext.java:216)
at
com.sun.genericra.util.ObjectBuilderFactory$JndiObjectBuilde
r.
createObject(ObjectBuilderFactory.java:95)
at
com.sun.genericra.util.ObjectBuilder.build(ObjectBuilder.jav
a:10
0)
at com.sun.genericra.inbound.AbstractConsumer.
initializeAdministeredObjects(AbstractConsumer.java:95)
.....

&#160;

Local fix

This issue can be worked around by adding an additional
<classloader> element to the <application> containing the MDB

Problem summary

****************************************************************
* USERS AFFECTED:  All users of IBM WebSphere Application      *
*                  Server Liberty Profile using third party    *
*                  JMS resource adapters                       *
****************************************************************
* PROBLEM DESCRIPTION: Message driven bean is not receiving    *
*                      messages or connection factory is       *
*                      unable to create connections.           *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
The server.xml is configured for to use the "Generic JMS
provider" resource adapter with MQ libraries.

ClassNotFound Exceptions are seen even though the MQ libraries
are configured on the classloader for the resource adapter.

For problems with MDB receiving messages the console.log
contains:
  [WARNING ] CNTR4015W: The message endpoint for the [name of
bean here] message-driven bean cannot be activated because the
[activation spec for the MDB] activation specification is not
available. The message endpoint will not receive messages until
the activation specification becomes available.

FFDC will contain:
Stack Dump = java.lang.ClassNotFoundException:
com.sun.jndi.fscontext.RefFSContextFactory
	at java.lang.Class.forNameImpl(Native Method)
	at java.lang.Class.forName(Class.java:219)
	at
com.ibm.ws.jndi.internal.WASInitialContextFactoryBuilder.createI
nitialContextFactory(WASInitialContextFactoryBuilder.java:55)
	at
org.apache.aries.jndi.ContextHelper.getInitialContextUsingBuilde
r(ContextHelper.java:233)
	at
org.apache.aries.jndi.ContextHelper.getContextProvider(ContextHe
lper.java:208)
	at
org.apache.aries.jndi.ContextHelper.getInitialContext(ContextHel
per.java:141)
	at
org.apache.aries.jndi.OSGiInitialContextFactoryBuilder.getInitia
lContext(OSGiInitialContextFactoryBuilder.java:51)
	at
javax.naming.spi.NamingManager.getInitialContext(NamingManager.j
ava:695)
	at
javax.naming.InitialContext.getDefaultInitCtx(InitialContext.jav
a:318)
	at javax.naming.InitialContext.init(InitialContext.java:253)
	at javax.naming.InitialContext.<init>(InitialContext.java:227)
	at
com.sun.genericra.util.ObjectBuilderFactory$JndiObjectBuilder.cr
eateObject(ObjectBuilderFactory.java:95)
	at
com.sun.genericra.util.ObjectBuilder.build(ObjectBuilder.java:10
0)
	at
com.sun.genericra.inbound.AbstractConsumer.initializeAdministere
dObjects(AbstractConsumer.java:95)
	at
com.sun.genericra.inbound.AbstractConsumer.<init>(AbstractConsum
er.java:63)
	at
com.sun.genericra.inbound.async.EndpointConsumer.<init>(Endpoint
Consumer.java:57)
	at
com.sun.genericra.inbound.EndpointConsumerFactory.createEndpoint
Consumer(EndpointConsumerFactory.java:45)
	at
com.sun.genericra.GenericJMSRA.endpointActivation(GenericJMSRA.j
ava:215)
	at
com.ibm.ws.jca.service.EndpointActivationService.activateEndpoin
t(EndpointActivationService.java:508)
       ...

For problems with connections the application will receive
javax.jms.JMSException: Unable to find the InitialContextFactory
com.sun.jndi.fscontext.RefFSContextFactory.
	at
com.sun.genericra.util.ExceptionUtils.newJMSException(ExceptionU
tils.java:67)
	at
com.sun.genericra.outbound.ConnectionFactory.createConnection(Co
nnectionFactory.java:80)
FFDC will contain:
Stack Dump = javax.resource.ResourceException: Unable to find
the InitialContextFactory
com.sun.jndi.fscontext.RefFSContextFactory.
	at
com.sun.genericra.util.ExceptionUtils.newResourceException(Excep
tionUtils.java:73)
	at
com.sun.genericra.outbound.AbstractManagedConnectionFactory.crea
teManagedConnection(AbstractManagedConnectionFactory.java:128)
	at
com.ibm.ejs.j2c.FreePool.createManagedConnectionWithMCWrapper(Fr
eePool.java:1744)
	at
com.ibm.ejs.j2c.FreePool.createOrWaitForConnection(FreePool.java
:1488)
	at com.ibm.ejs.j2c.PoolManager.reserve(PoolManager.java:2992)
	at com.ibm.ejs.j2c.PoolManager.reserve(PoolManager.java:2333)
	at
com.ibm.ejs.j2c.ConnectionManager.allocateMCWrapper(ConnectionMa
nager.java:1122)
	at
com.ibm.ejs.j2c.ConnectionManager.allocateConnection(ConnectionM
anager.java:689)
	at
com.sun.genericra.outbound.ConnectionFactory.createConnection(Co
nnectionFactory.java:75)
       ...

Problem conclusion

The code has been updated to resolve the ClassNotFoundException
that may occur for some resource adapters when a library is
configured on its classloader.

The fix for this APAR is currently targeted for inclusion in fix
pack 8.5.5.9.  Please refer to the Recommended Updates page for
delivery information:
http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980

Temporary fix

The problem may be worked around by adding the MQ libraries to
the classloader for the application.

Comments

APAR Information

APAR number
PI54230
Reported component name
WAS LIBERTY COR
Reported component ID
5725L2900
Reported release
855
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2015-12-15
Closed date
2016-02-23
Last modified date
2016-02-23

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
WAS LIBERTY COR
Fixed component ID
5725L2900

Applicable component levels

R855 PSY
UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSD28V","label":"WebSphere Application Server Liberty Core"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"855","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
27 April 2022

Tips

PI54230: ClassNotFoundException when using generic RA in Liberty

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

R855 PSY

Document Information

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