An error was encountered getting the attribute DatabaseProductVersion

<Warning> <JMX> <[ACTIVE] ExecuteThread: '41' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <BEA-149515> <An error was encountered getting the attribute DatabaseProductVersion on the MBean com.bea:ServerRuntime=ms1,Name=PIPPODataSourceASIA,Type=JDBCDataSourceRuntime during a call to getAttributes
since a few days we are getting this Warning in the logs.... no clue why... investigating.

With WLST:

wls:/mydomain/serverRuntime/JDBCServiceRuntime/ms1/JDBCDataSourceRuntimeMBeans/PIPPODataSourceASIA> ls
dr-- JDBCDriverRuntime
dr-- LastTask
dr-- WorkManagerRuntimes


Traceback (innermost last):
File "", line 1, in ?
File "", line 707, in ls
File "", line 1848, in raiseWLSTException
WLSTException: Error occured while performing ls : Error while retrieving attribute names and values : javax.management.RuntimeMBeanException: MBean getAttribute failed: java.lang.NullPointerException
Use dumpStack() to view the full stacktrace




dumpStack()

This Exception occurred at Wed Nov 14 17:47:00 CET 2012.
javax.management.RuntimeMBeanException: javax.management.RuntimeMBeanException: MBean getAttribute failed: java.lang.NullPointerException
        at weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:234)
        at weblogic.rmi.internal.BasicRemoteRef.invoke(BasicRemoteRef.java:223)
        at javax.management.remote.rmi.RMIConnectionImpl_1035_WLStub.getAttribute(Unknown Source)
        at weblogic.management.remote.common.RMIConnectionWrapper$12.run(ClientProviderBase.java:769)
        at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)
        at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:146)
        at weblogic.security.Security.runAs(Security.java:61)
        at weblogic.management.remote.common.RMIConnectionWrapper.getAttribute(ClientProviderBase.java:767)
        at javax.management.remote.rmi.RMIConnector$RemoteMBeanServerConnection.getAttribute(RMIConnector.java:878)
        at weblogic.management.scripting.InformationHandler.la(InformationHandler.java:653)
        at weblogic.management.scripting.InformationHandler.ls(InformationHandler.java:604)
        at weblogic.management.scripting.WLScriptContext.ls(WLScriptContext.java:280)
        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:597)
        at org.python.core.PyReflectedFunction.__call__(Unknown Source)
        at org.python.core.PyMethod.__call__(Unknown Source)
        at org.python.core.PyObject.__call__(Unknown Source)
        at org.python.core.PyObject.invoke(Unknown Source)
        at org.python.pycode._pyx52.ls$43(:696)
        at org.python.pycode._pyx52.call_function()
        at org.python.core.PyTableCode.call(Unknown Source)
        at org.python.core.PyTableCode.call(Unknown Source)
        at org.python.core.PyTableCode.call(Unknown Source)
        at org.python.core.PyFunction.__call__(Unknown Source)
        at org.python.pycode._pyx126.f$0(:1)
        at org.python.pycode._pyx126.call_function()
        at org.python.core.PyTableCode.call(Unknown Source)
        at org.python.core.PyCode.call(Unknown Source)
        at org.python.core.Py.runCode(Unknown Source)
        at org.python.core.Py.exec(Unknown Source)
        at org.python.util.PythonInterpreter.exec(Unknown Source)
        at org.python.util.InteractiveInterpreter.runcode(Unknown Source)
        at org.python.util.InteractiveInterpreter.runsource(Unknown Source)
        at org.python.util.InteractiveInterpreter.runsource(Unknown Source)
        at weblogic.management.scripting.WLST.main(WLST.java:173)
        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:597)
        at weblogic.WLST.main(WLST.java:29)
Caused by: javax.management.RuntimeMBeanException: MBean getAttribute failed: java.lang.NullPointerException
        at weblogic.management.jmx.modelmbean.WLSModelMBean.getAttribute(WLSModelMBean.java:553)
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:666)
        at com.sun.jmx.mbeanserver.JmxMBeanServer.getAttribute(JmxMBeanServer.java:638)
        at weblogic.management.jmx.mbeanserver.WLSMBeanServerInterceptorBase$12.run(WLSMBeanServerInterceptorBase.java:326)
        at java.security.AccessController.doPrivileged(Native Method)
        at weblogic.management.jmx.mbeanserver.WLSMBeanServerInterceptorBase.getAttribute(WLSMBeanServerInterceptorBase.java:324)
        at weblogic.management.mbeanservers.internal.JMXContextInterceptor.getAttribute(JMXContextInterceptor.java:157)
        at weblogic.management.jmx.mbeanserver.WLSMBeanServerInterceptorBase$12.run(WLSMBeanServerInterceptorBase.java:326)
        at java.security.AccessController.doPrivileged(Native Method)
        at weblogic.management.jmx.mbeanserver.WLSMBeanServerInterceptorBase.getAttribute(WLSMBeanServerInterceptorBase.java:324)
        at weblogic.management.mbeanservers.internal.SecurityInterceptor.getAttribute(SecurityInterceptor.java:299)
        at weblogic.management.jmx.mbeanserver.WLSMBeanServer.getAttribute(WLSMBeanServer.java:279)
        at weblogic.management.mbeanservers.internal.JMXConnectorSubjectForwarder$5$1.run(JMXConnectorSubjectForwarder.java:326)
        at java.security.AccessController.doPrivileged(Native Method)
        at weblogic.management.mbeanservers.internal.JMXConnectorSubjectForwarder$5.run(JMXConnectorSubjectForwarder.java:324)
        at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)
        at weblogic.management.mbeanservers.internal.JMXConnectorSubjectForwarder.getAttribute(JMXConnectorSubjectForwarder.java:319)
        at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1404)
        at javax.management.remote.rmi.RMIConnectionImpl.access$200(RMIConnectionImpl.java:72)
        at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1265)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1367)
        at javax.management.remote.rmi.RMIConnectionImpl.getAttribute(RMIConnectionImpl.java:600)
        at javax.management.remote.rmi.RMIConnectionImpl_WLSkel.invoke(Unknown Source)
        at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:667)
        at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:522)
        at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)
        at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:146)
        at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:518)
        at weblogic.rmi.internal.wls.WLSExecuteRequest.run(WLSExecuteRequest.java:118)
        at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
        at weblogic.work.ExecuteThread.run(ExecuteThread.java:178)
Caused by: java.lang.NullPointerException
        at weblogic.jdbc.sqlserverbase.BaseDatabaseMetaData.getDatabaseProductName(Unknown Source)
        at weblogic.jdbc.common.internal.DataSourceRuntimeMBeanImpl.getDatabaseProductName(DataSourceRuntimeMBeanImpl.java:773)
        at sun.reflect.GeneratedMethodAccessor18308.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at weblogic.management.jmx.modelmbean.WLSModelMBean.getAttribute(WLSModelMBean.java:525)
        ... 31 more
javax.management.RuntimeMBeanException: javax.management.RuntimeMBeanException: MBean getAttribute failed: java.lang.NullPointerException