Trying to debug Worklist app with JDeveloper

Question

We managed to get the worklistapp compiling under JDeveloper. Now, I'd like to debug it.
In order to debug (by running in the OC4J container within JDeveloper), it looks like I have to run the worklistapp as a remote client (specifying REMOTE_CLIENT or SOAP_CLIENT in the BaseServlet's init function). I used REMOTE_CLIENT. I also updated wf_client_config.xml and included the ORACLE_HOME/bpel/system/services/config directory in the classpath.
When I try to run the worklist app from JDeveloper, I get a null ptr exception (the line 'wfSvcClient.getAuthorizationService(idCtx);' is returning a null value for the authorization service):
Source breakpoint occurred at line 660 of TaskList.java.
07/01/30 16:57:37 java.lang.NullPointerException
07/01/30 16:57:37      at worklistapp.servlets.TaskList.checkTabsToDisplay(TaskList.java:669)
07/01/30 16:57:37      at worklistapp.servlets.TaskList.handleRequest(TaskList.java:122)
07/01/30 16:57:37      at worklistapp.servlets.BaseServlet.doGet(BaseServlet.java:144)
07/01/30 16:57:37      at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
07/01/30 16:57:37      at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
07/01/30 16:57:37      at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:711)
07/01/30 16:57:37      at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:368)
07/01/30 16:57:37      at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:866)
07/01/30 16:57:37      at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:448)
07/01/30 16:57:37      at com.evermind.server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:216)
07/01/30 16:57:37      at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:117)
07/01/30 16:57:37      at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:110)
07/01/30 16:57:37      at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
07/01/30 16:57:37      at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
07/01/30 16:57:37      at java.lang.Thread.run(Thread.java:595)
I also tried to use the soap client (SOAP_CLIENT in BaseServlet's init()), and I get this exception even before logging into the worklistapp:
<2007-01-30 17:05:18,001> <ERROR> <oracle.bpel.services.workflow> <::>
java.lang.NullPointerException
     at oracle.bpel.services.workflow.verification.impl.VerificationService.getWorkflowContextJAXBObject(VerificationService.java:1952)
     at oracle.bpel.services.workflow.verification.impl.VerificationService.getWorkflowContextElement(VerificationService.java:1972)
     at oracle.bpel.services.workflow.user.client.AbstractDOMUserMetadataServiceClient.createBaseType(AbstractDOMUserMetadataServiceClient.java:675)
     at oracle.bpel.services.workflow.user.client.AbstractDOMUserMetadataServiceClient.getPublicPreferences(AbstractDOMUserMetadataServiceClient.java:620)
     at worklistapp.servlets.BaseServlet.initApplicationPreferences(BaseServlet.java:555)
     at worklistapp.servlets.BaseServlet.validateSession(BaseServlet.java:185)
     at worklistapp.servlets.BaseServlet.doGet(BaseServlet.java:142)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
     at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:711)
     at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:368)
     at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:866)
     at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:448)
     at com.evermind.server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:216)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:117)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:110)
     at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
     at oracle.oc4j.network.ServerSocketAcceptHandler.procClientSocket(ServerSocketAcceptHandler.java:239)
     at oracle.oc4j.network.ServerSocketAcceptHandler.access$700(ServerSocketAcceptHandler.java:34)
     at oracle.oc4j.network.ServerSocketAcceptHandler$AcceptHandlerHorse.run(ServerSocketAcceptHandler.java:880)
     at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:298)
     at java.lang.Thread.run(Thread.java:595)
<::> ORABPEL-30721
<::>
<::> Error in invoking user metadata service operation.
<::> An client side error occured in invoking the user metadata service operation getPublicPreferences.
<::> Please check the exception error stack to identify the error. Contact oracle support if error is not fixable.
<::>
I did start up the user metadata services and runtime config services(I can see all the soap endpoints for the workflow services from a browser). But the worklist app doesn't seem to connect to the remote server. I did update my wf_client_config.xml to point to the remote server on which BPEL is located. And the wf_client_config.xml file is in the classpath.
If I deploy the worklist app on the server with bpel (specifying the parent as 'orabpel', it all works fine). I just can't get it working as a remote client.
So, any suggestions? I've been looking at threads on this forum to get to this point, but now I'm stuck.
Thanks,
Sachin

Answer 1

I thought I'd ping this thread to see if anyone has been able to debug the Worklist application with JDeveloper. We are trying to customize the worklist application, and being able to use JDeveloper to debug would greatly help out.
However, I have still been unable to get the worklist application to be able to connect to the workflow services remotely via the SOAP_CLIENT:
wfSvcClient = WorkflowServiceClientFactory.getWorkflowServiceClient(
WorkflowServiceClientFactory.SOAP_CLIENT);
I've played around with the classpath to make sure I have all the jars (based on other similar threads in this forum), but have not had any luck yet.
From a web browser, I can specify the SOAP endpoint to the Workflow services, and am able to call the service in the browser.
I updated my wf_client_config.xml file to point to the endpoints. e.g:
<taskQueryService>
<soapEndPoint>http://myserver:8888/integration/services/TaskQueryService/TaskQueryService</soapEndPoint>
</taskQueryService>
Thanks for any help,
Sachin
The debug output:
[Starting OC4J using the following ports: HTTP=8988, RMI=23891, JMS=9227.]
C:\jdev\jdev\system\oracle.j2ee.10.1.3.40.66\embedded-oc4j\config>
C:\jdev\jdk\bin\javaw.exe -client -Xdebug -Xrunjdwp:transport=dt_socket,server=y,address=1690 -classpath C:\jdev\j2ee\home\oc4j.jar;C:\jdev\jdev\lib\jdev-oc4j-embedded.jar -Xverify:none -XX:MaxPermSize=256m -DcheckForUpdates=adminClientOnly -Doracle.application.environment=development -Doracle.j2ee.dont.use.memory.archive=true -Doracle.j2ee.http.socket.timeout=500 -Doc4j.jms.usePersistenceLockFiles=false oracle.oc4j.loader.boot.BootStrap -config C:\jdev\jdev\system\oracle.j2ee.10.1.3.40.66\embedded-oc4j\config\server.xml
[waiting for the server to complete its initialization...]
Listening for transport dt_socket at address: 1690
Debugger connected to local process.
Jun 1, 2007 5:22:29 PM com.evermind.server.jms.JMSMessages log
INFO: JMSServer[]: OC4J JMS server recovering transactions (commit 0) (rollback 0) (prepared 0).
Jun 1, 2007 5:22:29 PM com.evermind.server.jms.JMSMessages log
INFO: JMSServer[]: OC4J JMS server recovering local transactions Queue[jms/Oc4jJmsExceptionQueue].
Ready message received from Oc4jNotifier.
Embedded OC4J startup time: 21594 ms.
Target URL -- http://192.168.89.52:8988/BPEL%20Samples-WorkListApplication-context-root/login.jsp
07/06/01 17:22:40 Oracle Containers for J2EE 10g (10.1.3.1.1) initialized
WARNING: Code-source C:\work\ProjectLaguna\ThirdParty\Oracle\SOA\10.1.3.1\j2ee\home\jazncore.jar (from <classpath> in C:\work\ProjectLaguna\dev\WorkItemList\WorkListApplcation\public_html) has the same filename but is not identical to /C:/jdev/j2ee/home/jazncore.jar (from <code-source> in META-INF/boot.xml in C:\jdev\j2ee\home\oc4j.jar). If it contains different versions of the same classes, it will be masked as the latter is already visible in the search path of loader current-workspace-app.web.BPEL Samples-WorkListApplication-webapp:0.0.0.
WARNING: Code-source C:\work\ProjectLaguna\ThirdParty\Oracle\SOA\10.1.3.1\diagnostics\lib\ojdl.jar (from manifest of /C:/work/ProjectLaguna/ThirdParty/Oracle/SOA/10.1.3.1/j2ee/home/jazncore.jar) has the same filename but is not identical to /C:/jdev/diagnostics/lib/ojdl.jar (from <code-source> (ignore manifest Class-Path) in META-INF/boot.xml in C:\jdev\j2ee\home\oc4j.jar). If it contains different versions of the same classes, it will be masked as the latter is already visible in the search path of loader current-workspace-app.web.BPEL Samples-WorkListApplication-webapp:0.0.0.
WARNING: Code-source C:\work\ProjectLaguna\ThirdParty\Oracle\SOA\10.1.3.1\lib\dms.jar (from manifest of /C:/work/ProjectLaguna/ThirdParty/Oracle/SOA/10.1.3.1/j2ee/home/jazncore.jar) has the same filename but is not identical to /C:/jdev/lib/dms.jar (from <code-source> (ignore manifest Class-Path) in META-INF/boot.xml in C:\jdev\j2ee\home\oc4j.jar). If it contains different versions of the same classes, it will be masked as the latter is already visible in the search path of loader current-workspace-app.web.BPEL Samples-WorkListApplication-webapp:0.0.0.
WARNING: Code-source C:\work\ProjectLaguna\ThirdParty\Oracle\SOA\10.1.3.1\webservices\lib\orasaaj.jar (from <classpath> in C:\work\ProjectLaguna\dev\WorkItemList\WorkListApplcation\public_html) has the same filename but is not identical to /C:/jdev/webservices/lib/orasaaj.jar (from <code-source> (ignore manifest Class-Path) in META-INF/boot.xml in C:\jdev\j2ee\home\oc4j.jar). If it contains different versions of the same classes, it will be masked as the latter is already visible in the search path of loader current-workspace-app.web.BPEL Samples-WorkListApplication-webapp:0.0.0.
WARNING: Code-source C:\work\ProjectLaguna\ThirdParty\Oracle\SOA\10.1.3.1\j2ee\home\lib\pcl.jar (from manifest of /C:/work/ProjectLaguna/ThirdParty/Oracle/SOA/10.1.3.1/j2ee/home/oc4j.jar) has the same filename but is not identical to /C:/jdev/j2ee/home/lib/pcl.jar (from system property java.class.path). If it contains different versions of the same classes, it will be masked as the latter is already visible in the search path of loader current-workspace-app.web.BPEL Samples-WorkListApplication-webapp:0.0.0.
07/06/01 17:22:42 Classpath: C:\jdev\jdk\jre\lib\rt.jar;C:\jdev\jdk\jre\lib\jsse.jar;C:\jdev\jdk\jre\lib\jce.jar;C:\jdev\jdk\jre\lib\charsets.jar;C:\jdev\jdk\jre\lib\ext\dnsns.jar;C:\jdev\jdk\jre\lib\ext\localedata.jar;C:\jdev\jdk\jre\lib\ext\sunjce_provider.jar;C:\jdev\jdk\jre\lib\ext\sunpkcs11.jar;C:\jdev\j2ee\home\oc4j-api.jar;C:\jdev\j2ee\home\lib\oc4j-unsupported-api.jar;C:\jdev\j2ee\home\lib\activation.jar;C:\jdev\j2ee\home\lib\mail.jar;C:\jdev\j2ee\home\lib\persistence.jar;C:\jdev\j2ee\home\lib\ejb30.jar;C:\jdev\j2ee\home\lib\ejb.jar;C:\jdev\j2ee\home\lib\javax77.jar;C:\jdev\j2ee\home\lib\javax88.jar;C:\jdev\j2ee\home\lib\servlet.jar;C:\jdev\j2ee\home\lib\jms.jar;C:\jdev\j2ee\home\lib\jta.jar;C:\jdev\j2ee\home\lib\jacc-api.jar;C:\jdev\j2ee\home\lib\connector.jar;C:\jdev\j2ee\home\lib\jmx_remote_api.jar;C:\jdev\j2ee\home\lib\jax-qname-namespace.jar;C:\jdev\webservices\lib\jaxr-api.jar;C:\jdev\webservices\lib\jaxrpc-api.jar;C:\jdev\webservices\lib\saaj-api.jar;C:\jdev\webservices\lib\jws-api.jar;C:\jdev\j2ee\home\lib\oc4j-internal.jar;C:\jdev\j2ee\home\lib\oems-jms-oc4j.jar;C:\jdev\j2ee\home\lib\oems-jms-client.jar;C:\jdev\j2ee\home\lib\oems-jms-server.jar;C:\jdev\j2ee\home\lib\oc4j-schemas.jar;C:\jdev\j2ee\home\lib\ojsp.jar;C:\jdev\j2ee\home\lib\oc4j_orb.jar;C:\jdev\j2ee\home\lib\iiop_support.jar;C:\jdev\j2ee\home\lib\orbbase.jar;C:\jdev\j2ee\home\iiop_gen_bin.jar;C:\jdev\j2ee\home\lib\jmxcluster.jar;C:\jdev\j2ee\home\jaccprovider.jar;C:\jdev\javavm\lib\jasper.zip;C:\jdev\j2ee\home\lib\adminclient.jar;C:\jdev\opmn\lib\optic.jar;C:\jdev\j2ee\home\jacc-spi.jar;C:\jdev\j2ee\home\jazncore.jar;C:\jdev\j2ee\home\jazn.jar;C:\jdev\jlib\ospnego.jar;C:\jdev\jlib\ldapjclnt10.jar;C:\jdev\webservices\lib\wsserver.jar;C:\jdev\webservices\lib\wsif.jar;C:\jdev\webservices\lib\orawsmetadata.jar;C:\jdev\webservices\lib\orajaxr.jar;C:\jdev\jlib\jssl-1_1.jar;C:\jdev\jlib\ojmisc.jar;C:\jdev\toplink\jlib\toplink-oc4j.jar;C:\jdev\diagnostics\lib\ojdl2.jar;C:\jdev\xqs\lib\xqs-api.jar;C:\jdev\xqs\lib\xds.jar;C:\jdev\jdev\lib\jdev-oc4j-embedded.jar;C:\jdev\j2ee\home\lib\pcl.jar;C:\jdev\j2ee\home\lib\ext;C:\jdev\j2ee\home\lib\ext\adfperfhandler.jar;C:\jdev\lib\dmsapp.jar;C:\jdev\jdev\system\oracle.j2ee.10.1.3.40.66\embedded-oc4j\applications\admin_ejb.jar;C:\jdev\j2ee\home\lib\scheduler.jar;C:\jdev\jdev\lib\jdev-rt.jar;C:\jdev\jdev\lib\ojc.jar;C:\jdev\jdev\system\oracle.j2ee.10.1.3.40.66\embedded-oc4j\connectors\datasources\datasources\datasources.jar;C:\jdev\BC4J\lib;C:\jdev\BC4J\lib\adfbinding.jar;C:\jdev\BC4J\lib\adfcm.jar;C:\jdev\BC4J\lib\adfm.jar;C:\jdev\BC4J\lib\adfmweb.jar;C:\jdev\BC4J\lib\adfs-jazn.jar;C:\jdev\BC4J\lib\adfs.jar;C:\jdev\BC4J\lib\adfshare.jar;C:\jdev\BC4J\lib\bc4jct.jar;C:\jdev\BC4J\lib\bc4jctejb.jar;C:\jdev\BC4J\lib\bc4jdomorcl.jar;C:\jdev\BC4J\lib\bc4jimdomains.jar;C:\jdev\BC4J\lib\bc4jmt.jar;C:\jdev\BC4J\lib\bc4jmtejb.jar;C:\jdev\BC4J\lib\bc4jsyscat.jar;C:\jdev\BC4J\lib\collections.jar;C:\jdev\jlib\commons-cli-1.0.jar;C:\jdev\mds\lib\concurrent.jar;C:\jdev\mds\lib\mdsrt.jar;C:\jdev\jlib\share.jar;C:\jdev\jlib\regexp.jar;C:\jdev\jlib\xmlef.jar;C:\jdev\BC4J\jlib\adfmtl.jar;C:\jdev\BC4J\jlib\adfui.jar;C:\jdev\BC4J\jlib\adf-connections.jar;C:\jdev\BC4J\jlib\dc-adapters.jar;C:\jdev\ord\jlib\ordim.jar;C:\jdev\ord\jlib\ordhttp.jar;C:\jdev\jlib\ojmisc.jar;C:\jdev\jlib\jdev-cm.jar;C:\jdev\lib\xsqlserializers.jar;C:\jdev\diagnostics\lib\ojdl.jar;C:\jdev\lib\dms.jar;C:\jdev\jdbc\lib\ojdbc14dms.jar;C:\jdev\opmn\lib\ons.jar;C:\jdev\jdbc\lib\ocrs12.jar;C:\jdev\rdbms\jlib\aqapi.jar;C:\jdev\j2ee\home\lib\ojms-provider.jar;C:\jdev\jdbc\lib\orai18n.jar;C:\jdev\lib\xmlparserv2.jar;C:\jdev\lib\xml.jar;C:\jdev\lib\xmlmesg.jar;C:\jdev\lib\xsu12.jar;C:\jdev\lib\xquery.jar;C:\jdev\jlib\osdt_core.jar;C:\jdev\jlib\osdt_cert.jar;C:\jdev\jlib\osdt_xmlsec.jar;C:\jdev\jlib\osdt_wss.jar;C:\jdev\jlib\osdt_saml.jar;C:\jdev\jlib\ojpse.jar;C:\jdev\jlib\oraclepki.jar;C:\jdev\toplink\jlib\toplink.jar;C:\jdev\toplink\jlib\antlr.jar;C:\jdev\toplink\jlib\toplink-essentials.jar;C:\jdev\webservices\lib\wsclient.jar;C:\jdev\webservices\lib\orasaaj.jar;C:\jdev\webservices\lib\xsdlib.jar;C:\jdev\webservices\lib\mdds.jar;C:\jdev\webservices\lib\relaxngDatatype.jar;C:\jdev\javacache\lib\cache.jar;C:\jdev\lib\xschema.jar;C:\jdev\webservices\lib\soap.jar;C:\jdev\sqlj\lib\runtime12.jar;C:\jdev\sqlj\lib\translator.jar;C:\jdev\webservices\lib\orawsdl.jar;C:\jdev\j2ee\home\applib;C:\jdev\j2ee\home\jsp\lib\taglib;C:\jdev\j2ee\home\jsp\lib\taglib\ojsputil.jar;C:\jdev\lib\dsv2.jar;C:\jdev\j2ee\home\lib\http_client.jar;C:\jdev\j2ee\home\lib\jgroups-core.jar;C:\work\ProjectLaguna\dev\WorkItemList\WorkListApplcation\public_html;C:\work\ProjectLaguna\dev\WorkItemList\WorkListApplcation\classes;C:\work\ProjectLaguna\ThirdParty\Oracle\SOA\10.1.3.1\bpel\lib\bpm-infra.jar;C:\work\ProjectLaguna\ThirdParty\Oracle\SOA\10.1.3.1\bpel\lib\orabpel-common.jar;C:\work\ProjectLaguna\ThirdParty\Oracle\SOA\10.1.3.1\bpel\lib\orabpel-thirdparty.jar;C:\work\ProjectLaguna\ThirdParty\Oracle\SOA\10.1.3.1\bpel\lib\orabpel.jar;C:\work\ProjectLaguna\ThirdParty\Oracle\SOA\10.1.3.1\j2ee\home\jazncore.jar;C:\work\ProjectLaguna\ThirdParty\Oracle\SOA\10.1.3.1\diagnostics\lib\ojdl.jar;C:\work\ProjectLaguna\ThirdParty\Oracle\SOA\10.1.3.1\lib\dms.jar;C:\work\ProjectLaguna\ThirdParty\Oracle\SOA\10.1.3.1\j2ee\home\oc4jclient.jar;C:\work\ProjectLaguna\ThirdParty\Oracle\SOA\10.1.3.1\bpel\lib\bicmn.jar;C:\work\ProjectLaguna\ThirdParty\Oracle\SOA\10.1.3.1\bpel\lib\bipres.jar;C:\work\ProjectLaguna\ThirdParty\Oracle\SOA\10.1.3.1\bpel\lib\uix2.jar;C:\work\ProjectLaguna\ThirdParty\Oracle\SOA\10.1.3.1\webservices\lib\orasaaj.jar;C:\work\ProjectLaguna\ThirdParty\Oracle\SOA\10.1.3.1\j2ee\home\oc4j.jar;C:\work\ProjectLaguna\ThirdParty\Oracle\SOA\10.1.3.1\j2ee\home\lib\pcl.jar;C:\product\10.1.3.1\OracleAS_1\bpel\system\services\config;C:\work\ProjectLaguna\ThirdParty\Oracle\SOA\10.1.3.1\bpel\system\services\lib\bpm-services.jar;C:\product\10.1.3.1\OracleAS_1\bpel\system\services\schema;C:\work\ProjectLaguna\ThirdParty\Oracle\SOA\10.1.3.1\webservices\client_lib\wsclient_extended.jar
07/06/01 17:22:48 log4j:WARN No appenders could be found for logger (collaxa.cube.services).
07/06/01 17:22:48 log4j:WARN Please initialize the log4j system properly.
<2007-06-01 17:22:48,504> <ERROR> <oracle.bpel.services.workflow> <::>
java.lang.NullPointerException
     at oracle.bpel.services.workflow.verification.impl.VerificationService.getWorkflowContextJAXBObject(VerificationService.java:1952)
     at oracle.bpel.services.workflow.verification.impl.VerificationService.getWorkflowContextElement(VerificationService.java:1972)
     at oracle.bpel.services.workflow.user.client.AbstractDOMUserMetadataServiceClient.createBaseType(AbstractDOMUserMetadataServiceClient.java:675)
     at oracle.bpel.services.workflow.user.client.AbstractDOMUserMetadataServiceClient.getPublicPreferences(AbstractDOMUserMetadataServiceClient.java:620)
     at worklistapp.servlets.BaseServlet.initApplicationPreferences(BaseServlet.java:556)
     at worklistapp.servlets.BaseServlet.validateSession(BaseServlet.java:183)
     at worklistapp.servlets.BaseServlet.doGet(BaseServlet.java:140)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
     at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:712)
     at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:369)
     at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:865)
     at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:447)
     at com.evermind.server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:215)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:117)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:110)
     at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
     at oracle.oc4j.network.ServerSocketAcceptHandler.procClientSocket(ServerSocketAcceptHandler.java:239)
     at oracle.oc4j.network.ServerSocketAcceptHandler.access$700(ServerSocketAcceptHandler.java:34)
     at oracle.oc4j.network.ServerSocketAcceptHandler$AcceptHandlerHorse.run(ServerSocketAcceptHandler.java:880)
     at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:298)
     at java.lang.Thread.run(Thread.java:595)
<::> ORABPEL-30721
<::>
<::> Error in invoking user metadata service operation.
<::> An client side error occured in invoking the user metadata service operation getPublicPreferences.
<::> Please check the exception error stack to identify the error. Contact oracle support if error is not fixable.
<::>
<::>      at oracle.bpel.services.workflow.user.client.AbstractDOMUserMetadataServiceClient.getPublicPreferences(AbstractDOMUserMetadataServiceClient.java:630)
<::>      at worklistapp.servlets.BaseServlet.initApplicationPreferences(BaseServlet.java:556)
<::>      at worklistapp.servlets.BaseServlet.validateSession(BaseServlet.java:183)
<::>      at worklistapp.servlets.BaseServlet.doGet(BaseServlet.java:140)
<::>      at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
<::>      at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
<::>      at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:712)
<::>      at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:369)
<::>      at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:865)
<::>      at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:447)
<::>      at com.evermind.server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:215)
<::>      at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:117)
<::>      at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:110)
<::>      at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
<::>      at oracle.oc4j.network.ServerSocketAcceptHandler.procClientSocket(ServerSocketAcceptHandler.java:239)
<::>      at oracle.oc4j.network.ServerSocketAcceptHandler.access$700(ServerSocketAcceptHandler.java:34)
<::>      at oracle.oc4j.network.ServerSocketAcceptHandler$AcceptHandlerHorse.run(ServerSocketAcceptHandler.java:880)
<::>      at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:298)
<::>      at java.lang.Thread.run(Thread.java:595)
<::> Caused by: java.lang.NullPointerException
<::>      at oracle.bpel.services.workflow.verification.impl.VerificationService.getWorkflowContextJAXBObject(VerificationService.java:1952)
<::>      at oracle.bpel.services.workflow.verification.impl.VerificationService.getWorkflowContextElement(VerificationService.java:1972)
<::>      at oracle.bpel.services.workflow.user.client.AbstractDOMUserMetadataServiceClient.createBaseType(AbstractDOMUserMetadataServiceClient.java:675)
<::>      at oracle.bpel.services.workflow.user.client.AbstractDOMUserMetadataServiceClient.getPublicPreferences(AbstractDOMUserMetadataServiceClient.java:620)
<::>      ... 18 more
<2007-06-01 17:22:48,536> <ERROR> <oracle.bpel.services.workflow> <::>
java.lang.NullPointerException
     at oracle.bpel.services.workflow.verification.impl.VerificationService.getWorkflowContextJAXBObject(VerificationService.java:1952)
     at oracle.bpel.services.workflow.verification.impl.VerificationService.getWorkflowContextElement(VerificationService.java:1972)
     at oracle.bpel.services.workflow.user.client.AbstractDOMUserMetadataServiceClient.createBaseType(AbstractDOMUserMetadataServiceClient.java:675)
     at oracle.bpel.services.workflow.user.client.AbstractDOMUserMetadataServiceClient.getPublicPreferences(AbstractDOMUserMetadataServiceClient.java:620)
     at worklistapp.servlets.BaseServlet.initApplicationPreferences(BaseServlet.java:556)
     at worklistapp.servlets.BaseServlet.validateSession(BaseServlet.java:183)
     at worklistapp.servlets.BaseServlet.doGet(BaseServlet.java:140)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
     at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:712)
     at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:369)
     at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:865)
     at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:447)
     at com.evermind.server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:215)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:117)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:110)
     at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
     at oracle.oc4j.network.ServerSocketAcceptHandler.procClientSocket(ServerSocketAcceptHandler.java:239)
     at oracle.oc4j.network.ServerSocketAcceptHandler.access$700(ServerSocketAcceptHandler.java:34)
     at oracle.oc4j.network.ServerSocketAcceptHandler$AcceptHandlerHorse.run(ServerSocketAcceptHandler.java:880)
     at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:298)
     at java.lang.Thread.run(Thread.java:595)