Toplink JPA with Coherence deployment to Weblogic 10.3

Question

Hi,
I have created an EJB application using Toplink JPA and Coherence. I would like to deploy this application to Weblogic 10.3.
During the startup of Weblogic I have specified the Java option as
-Dtangosol.coherence.cacheconfig=D:/JDEV_11g/jdeveloper/jdev/mywork/CoherenceApp/CoherenceProject/src/META-INF/coherence-cache-config.xml.
Persistence.xml and coherence-cache-config.xml are palced inside the jar file.
When I execute the ejb client program, during the method call, I can see that coherence is started but it uses the cache-config from the coherence.jar file instaed of the value I have set during startup. How can I make weblogic use my cache-config.xml? I have included the log file entries from server:
[EL Finest]: 2009.04.17 05:33:48.625--UnitOfWork(1777337)--Thread(Thread[[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)',5,Pooled Threads])--Execute query ReadObjectQuery(coherenceproject.MetadataType)
2009-04-17 05:33:54.547/258.954 Oracle Coherence 3.4.2/411 <Info> (thread=[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)', member=n/a): Loaded operational configuration from resource "zip:D:/JDEV_11g/jdeveloper/jdev/mywork/CoherenceApp/lib/coherence.jar!/tangosol-coherence.xml"
2009-04-17 05:33:54.562/258.969 Oracle Coherence 3.4.2/411 <Info> (thread=[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)', member=n/a): Loaded operational overrides from resource "zip:D:/JDEV_11g/jdeveloper/jdev/mywork/CoherenceApp/lib/coherence.jar!/tangosol-coherence-override-dev.xml"
2009-04-17 05:33:54.562/258.969 Oracle Coherence 3.4.2/411 <D5> (thread=[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)', member=n/a): Optional configuration override "/tangosol-coherence-override.xml" is not specified
2009-04-17 05:33:54.578/258.985 Oracle Coherence 3.4.2/411 <D5> (thread=[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)', member=n/a): Optional configuration override "/custom-mbeans.xml" is not specified
Oracle Coherence Version 3.4.2/411
Grid Edition: Development mode
Copyright (c) 2000-2009 Oracle. All rights reserved.
*2009-04-17 05:33:55.750/260.157 Oracle Coherence GE 3.4.2/411 <Info> (thread=[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)', member=n/a): Loaded cache configuration from resource "zip:D:/JDEV_11g/jdeveloper/jdev/mywork/CoherenceApp/lib/coherence.jar!/coherence-cache-config.xml"*
2009-04-17 05:34:17.390/281.797 Oracle Coherence GE 3.4.2/411 <D5> (thread=Cluster, member=n/a): Service Cluster joined the cluster with senior service member n/a
2009-04-17 05:34:21.890/286.297 Oracle Coherence GE 3.4.2/411 <Info> (thread=Cluster, member=n/a): Created a new cluster "cluster:0x2FFB" with Member(Id=1, Timestamp=2009-04-17 05:34:09.203, Address=141.144.90.113:8088, MachineId=18289, Location=site:sg.oracle.com,machine:rajerama-sg,process:3816, Role=WeblogicServer, Edition=Grid Edition, Mode=Development, CpuCount=2, SocketCount=1) UID=0x8D905A7100000120B0D9DD3347711F98
2009-04-17 05:34:27.000/291.407 Oracle Coherence GE 3.4.2/411 <D5> (thread=DistributedCache, member=1): Service DistributedCache joined the cluster with senior service member 1
[EL Finer]: 2009.04.17 05:34:28.343--ServerSession(32927169)--Thread(Thread[[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)',5,Pooled Threads])--Coherence(MetadataType)::Get: 2
[EL Fine]: 2009.04.17 05:34:28.703--ServerSession(32927169)--Thread(Thread[[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)',5,Pooled Threads])--Coherence(MetadataType)::Get: 2 result: null
[EL Finer]: 2009.04.17 05:34:28.703--ServerSession(32927169)--Thread(Thread[[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)',5,Pooled Threads])--Coherence(MetadataType)::Get: 2
*[EL Fine]: 2009.04.17 05:34:28.703--ServerSession(32927169)--Thread(Thread[[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)',5,Pooled Threads])--Coherence(MetadataType)::Get: 2 result: null*
null
Eventhough the method is called correctly, it does not return the value. Is there any other setup that has to be done?
Regards
Raji

Answer 1

Hi Raji,
You mentioned:
>
-Dtangosol.coherence.cacheconfig=D:/JDEV_11g/jdeveloper/jdev/mywork/CoherenceApp/CoherenceProject/src/META-INF/coherence-cache-config.xml
>
and
>
Persistence.xml and coherence-cache-config.xml are palced inside the jar file.
>
It appears that these are conflicting; as the system property indicates that the config should be read from a file, whereas the file is actually deployed in a jar.
That being said, I would suggest double checking that the system property is actually being set in the JVM. In my testing, if I specify a cache config that does not exist, an exception will be thrown:
java -Dtangosol.coherence.cacheconfig=foo.xml  com.tangosol.net.CacheFactory
Oracle Coherence Version 3.4.2/411p3
Grid Edition: Development mode
Copyright (c) 2000-2009 Oracle. All rights reserved.
Map (?): cache test
2009-04-22 15:33:15.310/6.917 Oracle Coherence GE 3.4.2/411p3 <Error> (thread=main, member=1):
(Wrapped: Failed to load the factory) java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
        at com.tangosol.util.ClassHelper.newInstance(ClassHelper.java:662)
        at com.tangosol.net.CacheFactory.getConfigurableCacheFactory(CacheFactory.java:602)
        at com.tangosol.coherence.component.application.console.Coherence.doCache(Coherence.CDB:9)
        at com.tangosol.coherence.component.application.console.Coherence.processCommand(Coherence.CDB:209)
        at com.tangosol.coherence.component.application.console.Coherence.run(Coherence.CDB:39)
        at com.tangosol.coherence.component.application.console.Coherence.main(Coherence.CDB:3)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at com.tangosol.net.CacheFactory.main(CacheFactory.java:1308)
Caused by: (Wrapped: Failed to load configuration resource: foo.xml) java.io.IOException: Configuration is missing: "foo.xml", loader=null
        at com.tangosol.net.DefaultConfigurableCacheFactory.loadConfigAsResource(DefaultConfigurableCacheFactory.java:386)
        at com.tangosol.net.DefaultConfigurableCacheFactory.loadConfig(DefaultConfigurableCacheFactory.java:337)
        at com.tangosol.net.DefaultConfigurableCacheFactory.loadConfig(DefaultConfigurableCacheFactory.java:309)
        at com.tangosol.net.DefaultConfigurableCacheFactory.<init>(DefaultConfigurableCacheFactory.java:137)
        ... 15 moreThanks,
Patrick