I am using McKoi as an embedded database in JBoss-3.2.3.
The mckoidb.jar is bundled in the application's ear file and uses the
following in application.xml to deploy it.
<application>
<module>
<java>mckoidb.jar</java>
</module>
</application>
McKoi is registered via -ds.xml file and all code acquires a connection from
the pool.
<datasources>
<local-tx-datasource>
<jndi-name>McKoiDS</jndi-name>
<connection-url>jdbc:mckoi:local://../server/workflowengine/data/mckoi/db.co
nf?create_or_boot=true</connection-url>
<driver-class>com.mckoi.JDBCDriver</driver-class>
<user-name>user</user-name>
<password>password</password>
<min-pool-size>5</min-pool-size>
<idle-timeout-minutes>0</idle-timeout-minutes>
</local-tx-datasource>
</datasources>
For the most part, it works fine. However, there are occasions where I get
the following exception in JBoss.
2004-01-14 14:50:30,210 WARN [org.jboss.tm.TransactionImpl] XAException:
tx=TransactionImpl:XidImpl [FormatId=257, GlobalId=6x23jygzt041//41,
BranchQual=] errorCode=XA_UNKNOWN(0)
org.jboss.resource.connectionmanager.JBossLocalXAException: Error trying to
start local tx: ; - nested throwable:
(org.jboss.resource.JBossResourceException: SQLException; - nested
throwable: (com.mckoi.database.jdbc.MSQLException))
at
org.jboss.resource.connectionmanager.TxConnectionManager$LocalXAResource.sta
rt(TxConnectionManager.java:708)
at
org.jboss.tm.TransactionImpl.startResource(TransactionImpl.java:1148)
at
org.jboss.tm.TransactionImpl.enlistResource(TransactionImpl.java:636)
at
org.jboss.resource.connectionmanager.TxConnectionManager$TxConnectionEventLi
stener.enlist(TxConnectionManager.java:455)
at
org.jboss.resource.connectionmanager.TxConnectionManager.managedConnectionRe
connected(TxConnectionManager.java:343)
at
org.jboss.resource.connectionmanager.BaseConnectionManager2.allocateConnecti
on(BaseConnectionManager2.java:483)
at
org.jboss.resource.connectionmanager.BaseConnectionManager2$ConnectionManage
rProxy.allocateConnection(BaseConnectionManager2.java:814)
at
org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(WrapperDataS
ource.java:102)
at
com.nielsenmedia.wfe.persistence.WFEPersistence.openConnection(WFEPersistenc
e.java:52)
at
com.nielsenmedia.wfe.persistence.destination.McKoiWFESpecDestination.setup(M
cKoiWFESpecDestination.java:51)
at
com.nielsenmedia.persistence.PersistenceFactory.registerDestination(Persiste
nceFactory.java:105)
at
com.nielsenmedia.wfe.persistence.McKoiWFEPersistence.registerSpecDestination
(McKoiWFEPersistence.java:209)
at
com.nielsenmedia.wfe.ejb.inbound.ProcessSpecBean.getPersistenceFactory(Proce
ssSpecBean.java:311)
at
com.nielsenmedia.wfe.ejb.inbound.ProcessSpecBean.submitSpec(ProcessSpecBean.
java:161)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39
)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at
org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(Stateles
sSessionContainer.java:683)
at
org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(Cach
edConnectionInterceptor.java:185)
at
org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSe
ssionInstanceInterceptor.java:72)
at
org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor
.java:84)
at
org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.
java:267)
at
org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:128)
at
org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:11
8)
at
org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:191)
at
org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinde
rInterceptor.java:122)
at
org.jboss.ejb.StatelessSessionContainer.internalInvoke(StatelessSessionConta
iner.java:331)
at org.jboss.ejb.Container.invoke(Container.java:700)
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:324)
at
org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispat
cher.java:284)
at
org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:546)
at
org.jboss.invocation.local.LocalInvoker.invoke(LocalInvoker.java:101)
at
org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:90)
at
org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:46
)
at
org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:45)
at
org.jboss.proxy.ejb.StatelessSessionInterceptor.invoke(StatelessSessionInter
ceptor.java:100)
at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:85)
at $Proxy160.submitSpec(Unknown Source)
at
com.nielsenmedia.wfe.WorkFlowEngineCactus.doTestSpecs(WorkFlowEngineCactus.j
ava:745)
at
com.nielsenmedia.wfe.WorkFlowEngineCactus.testSpec2(WorkFlowEngineCactus.jav
a:137)
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:324)
at
org.apache.cactus.AbstractTestCase.runServerTest(AbstractTestCase.java:332)
at
org.apache.cactus.AbstractTestCase.runBareServerTest(AbstractTestCase.java:2
35)
at
org.apache.cactus.server.AbstractWebTestCaller.doTest(AbstractWebTestCaller.
java:149)
at
org.apache.cactus.server.AbstractWebTestController.dispatch87_handleRequest(
AbstractWebTestController.java;org/apache/cactus/util/log/LogAspect.aj(1k):1
25)
at
org.apache.cactus.server.AbstractWebTestController.around87_handleRequest(Ab
stractWebTestController.java;org/apache/cactus/util/log/LogAspect.aj(1k):114
9)
at
org.apache.cactus.server.AbstractWebTestController.handleRequest(AbstractWeb
TestController.java;org/apache/cactus/util/log/LogAspect.aj(1k):101)
at
org.apache.cactus.server.ServletTestRedirector.dispatch113_doPost(ServletTes
tRedirector.java;org/apache/cactus/util/log/LogAspect.aj(1k):123)
at
org.apache.cactus.server.ServletTestRedirector.around113_doPost(ServletTestR
edirector.java;org/apache/cactus/util/log/LogAspect.aj(1k):1149)
at
org.apache.cactus.server.ServletTestRedirector.doPost(ServletTestRedirector.
java;org/apache/cactus/util/log/LogAspect.aj(1k):109)
at
org.apache.cactus.server.ServletTestRedirector.dispatch112_doGet(ServletTest
Redirector.java;org/apache/cactus/util/log/LogAspect.aj(1k):96)
at
org.apache.cactus.server.ServletTestRedirector.around112_doGet(ServletTestRe
director.java;org/apache/cactus/util/log/LogAspect.aj(1k):1149)
at
org.apache.cactus.server.ServletTestRedirector.doGet(ServletTestRedirector.j
ava;org/apache/cactus/util/log/LogAspect.aj(1k):92)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.java:247)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:193)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
va:256)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
va:191)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
at
org.jboss.web.tomcat.security.JBossSecurityMgrRealm.invoke(JBossSecurityMgrR
ealm.java:220)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
at
org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:2
46)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
at
org.jboss.web.tomcat.tc4.statistics.ContainerStatsValve.invoke(ContainerStat
sValve.java:76)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2417)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180
)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.
java:171)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172
)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
at
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssoci
ationValve.java:65)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:577)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
:174)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:197)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:781)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConne
ction(Http11Protocol.java:549)
at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:605)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav
a:677)
at java.lang.Thread.run(Thread.java:534)
Caused by: org.jboss.resource.JBossResourceException: SQLException; - nested
throwable: (com.mckoi.database.jdbc.MSQLException)
at
org.jboss.resource.adapter.jdbc.BaseWrapperManagedConnection.checkException(
BaseWrapperManagedConnection.java:546)
at
org.jboss.resource.adapter.jdbc.local.LocalManagedConnection.begin(LocalMana
gedConnection.java:156)
at
org.jboss.resource.connectionmanager.TxConnectionManager$LocalXAResource.sta
rt(TxConnectionManager.java:704)
... 100 more
Caused by: com.mckoi.database.jdbc.MSQLException
at
com.mckoi.database.jdbcserver.AbstractJDBCDatabaseInterface.handleExecuteThr
owable(AbstractJDBCDatabaseInterface.java:289)
at
com.mckoi.database.jdbcserver.AbstractJDBCDatabaseInterface.execQuery(Abstra
ctJDBCDatabaseInterface.java:479)
at
com.mckoi.database.jdbcserver.JDBCDatabaseInterface.execQuery(JDBCDatabaseIn
terface.java:251)
at
com.mckoi.database.jdbc.MConnection.executeQuery(MConnection.java:442)
at
com.mckoi.database.jdbc.MConnection.executeQueries(MConnection.java:425)
at
com.mckoi.database.jdbc.MStatement.executeQueries(MStatement.java:190)
at
com.mckoi.database.jdbc.MStatement.executeQuery(MStatement.java:164)
at
com.mckoi.database.jdbc.MStatement.executeQuery(MStatement.java:219)
at
com.mckoi.database.jdbc.MConnection.setAutoCommit(MConnection.java:599)
at
org.jboss.resource.adapter.jdbc.local.LocalManagedConnection.begin(LocalMana
gedConnection.java:149)
... 101 more
At first, I thought it was a transaction issue, but on further analysis I
found the following in the McKoi database debug log.
>
com.mckoi.database.jdbcserver.DefaultLocalBootable$LocalJDBCDatabaseInterfac
e ( lvl: 20 )
Exception thrown during query processing on: [ Query:
[ SET AUTO COMMIT OFF ]
]
[ TIME: Wed Jan 14 14:50:30 EST 2004 ]
% java.lang.NullPointerException
at org.jboss.mx.loading.LoadMgr3.beginLoadTask(LoadMgr3.java:119)
at
org.jboss.mx.loading.UnifiedClassLoader3.loadClassImpl(UnifiedClassLoader3.j
ava:169)
at
org.jboss.mx.loading.UnifiedClassLoader3.loadClass(UnifiedClassLoader3.java:
123)
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:141)
at
com.mckoi.database.interpret.SQLQueryExecutor.execute(SQLQueryExecutor.java:
120)
at
com.mckoi.database.jdbcserver.AbstractJDBCDatabaseInterface.execQuery(Abstra
ctJDBCDatabaseInterface.java:461)
at
com.mckoi.database.jdbcserver.JDBCDatabaseInterface.execQuery(JDBCDatabaseIn
terface.java:251)
at
com.mckoi.database.jdbc.MConnection.executeQuery(MConnection.java:442)
at
com.mckoi.database.jdbc.MConnection.executeQueries(MConnection.java:425)
at
com.mckoi.database.jdbc.MStatement.executeQueries(MStatement.java:190)
at
com.mckoi.database.jdbc.MStatement.executeQuery(MStatement.java:164)
at
com.mckoi.database.jdbc.MStatement.executeQuery(MStatement.java:219)
at
com.mckoi.database.jdbc.MConnection.setAutoCommit(MConnection.java:599)
at
org.jboss.resource.adapter.jdbc.local.LocalManagedConnection.begin(LocalMana
gedConnection.java:149)
at
org.jboss.resource.connectionmanager.TxConnectionManager$LocalXAResource.sta
rt(TxConnectionManager.java:704)
at
org.jboss.tm.TransactionImpl.startResource(TransactionImpl.java:1148)
at
org.jboss.tm.TransactionImpl.enlistResource(TransactionImpl.java:636)
at
org.jboss.resource.connectionmanager.TxConnectionManager$TxConnectionEventLi
stener.enlist(TxConnectionManager.java:455)
at
org.jboss.resource.connectionmanager.TxConnectionManager.managedConnectionRe
connected(TxConnectionManager.java:343)
at
org.jboss.resource.connectionmanager.BaseConnectionManager2.allocateConnecti
on(BaseConnectionManager2.java:483)
at
org.jboss.resource.connectionmanager.BaseConnectionManager2$ConnectionManage
rProxy.allocateConnection(BaseConnectionManager2.java:814)
at
org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(WrapperDataS
ource.java:102)
at
com.nielsenmedia.wfe.persistence.WFEPersistence.openConnection(WFEPersistenc
e.java:52)
at
com.nielsenmedia.wfe.persistence.destination.McKoiWFESpecDestination.setup(M
cKoiWFESpecDestination.java:51)
at
com.nielsenmedia.persistence.PersistenceFactory.registerDestination(Persiste
nceFactory.java:105)
at
com.nielsenmedia.wfe.persistence.McKoiWFEPersistence.registerSpecDestination
(McKoiWFEPersistence.java:209)
at
com.nielsenmedia.wfe.ejb.inbound.ProcessSpecBean.getPersistenceFactory(Proce
ssSpecBean.java:311)
at
com.nielsenmedia.wfe.ejb.inbound.ProcessSpecBean.submitSpec(ProcessSpecBean.
java:161)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39
)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at
org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(Stateles
sSessionContainer.java:683)
at
org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(Cach
edConnectionInterceptor.java:185)
at
org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSe
ssionInstanceInterceptor.java:72)
at
org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor
.java:84)
at
org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.
java:267)
at
org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:128)
at
org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:11
8)
at
org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:191)
at
org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinde
rInterceptor.java:122)
at
org.jboss.ejb.StatelessSessionContainer.internalInvoke(StatelessSessionConta
iner.java:331)
at org.jboss.ejb.Container.invoke(Container.java:700)
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:324)
at
org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispat
cher.java:284)
at
org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:546)
at
org.jboss.invocation.local.LocalInvoker.invoke(LocalInvoker.java:101)
at
org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:90)
at
org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:46
)
at
org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:45)
at
org.jboss.proxy.ejb.StatelessSessionInterceptor.invoke(StatelessSessionInter
ceptor.java:100)
at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:85)
at $Proxy160.submitSpec(Unknown Source)
at
com.nielsenmedia.wfe.WorkFlowEngineCactus.doTestSpecs(WorkFlowEngineCactus.j
ava:745)
at
com.nielsenmedia.wfe.WorkFlowEngineCactus.testSpec2(WorkFlowEngineCactus.jav
a:137)
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:324)
at
org.apache.cactus.AbstractTestCase.runServerTest(AbstractTestCase.java:332)
at
org.apache.cactus.AbstractTestCase.runBareServerTest(AbstractTestCase.java:2
35)
at
org.apache.cactus.server.AbstractWebTestCaller.doTest(AbstractWebTestCaller.
java:149)
at
org.apache.cactus.server.AbstractWebTestController.dispatch87_handleRequest(
AbstractWebTestController.java;org/apache/cactus/util/log/LogAspect.aj(1k):1
25)
at
org.apache.cactus.server.AbstractWebTestController.around87_handleRequest(Ab
stractWebTestController.java;org/apache/cactus/util/log/LogAspect.aj(1k):114
9)
at
org.apache.cactus.server.AbstractWebTestController.handleRequest(AbstractWeb
TestController.java;org/apache/cactus/util/log/LogAspect.aj(1k):101)
at
org.apache.cactus.server.ServletTestRedirector.dispatch113_doPost(ServletTes
tRedirector.java;org/apache/cactus/util/log/LogAspect.aj(1k):123)
at
org.apache.cactus.server.ServletTestRedirector.around113_doPost(ServletTestR
edirector.java;org/apache/cactus/util/log/LogAspect.aj(1k):1149)
at
org.apache.cactus.server.ServletTestRedirector.doPost(ServletTestRedirector.
java;org/apache/cactus/util/log/LogAspect.aj(1k):109)
at
org.apache.cactus.server.ServletTestRedirector.dispatch112_doGet(ServletTest
Redirector.java;org/apache/cactus/util/log/LogAspect.aj(1k):96)
at
org.apache.cactus.server.ServletTestRedirector.around112_doGet(ServletTestRe
director.java;org/apache/cactus/util/log/LogAspect.aj(1k):1149)
at
org.apache.cactus.server.ServletTestRedirector.doGet(ServletTestRedirector.j
ava;org/apache/cactus/util/log/LogAspect.aj(1k):92)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.java:247)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:193)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
va:256)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
va:191)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
at
org.jboss.web.tomcat.security.JBossSecurityMgrRealm.invoke(JBossSecurityMgrR
ealm.java:220)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
at
org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:2
46)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
at
org.jboss.web.tomcat.tc4.statistics.ContainerStatsValve.invoke(ContainerStat
sValve.java:76)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2417)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180
)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.
java:171)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172
)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
at
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssoci
ationValve.java:65)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:577)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
:174)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:197)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:781)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConne
ction(Http11Protocol.java:549)
at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:605)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav
a:677)
at java.lang.Thread.run(Thread.java:534)
I then when and looked at the LoadMgr3 class at line 119 and discovered that
the exception might actually be due to a classloading issue of some sort,
not a transactional problem.
>From ./jmx/src/main/org/jboss/mx/loading/LoadMgr3.java
public static boolean beginLoadTask(ClassLoadingTask task,
UnifiedLoaderRepository3 repository)
throws ClassNotFoundException
{
boolean trace = log.isTraceEnabled();
if( trace )
log.trace("Begin beginLoadTask, task="+task);
// Try the cache before anything else.
Class cls = repository.loadClassFromCache(task.classname); <--- this
is line 119 ******
if( cls != null )
{
task.loadedClass = cls;
task.state = ClassLoadingTask.FINISHED;
if( trace )
log.trace("End beginLoadTask, loadClassFromCache, classname:
"+task.classname);
return true;
}
It appears that either "repository" or "task" is null in this case. Since
there are no checks for null on these variables, I'm guessing that the
assumption was made that they never should be null.
Any suggestions on where to look next, or possible solutions?
Thanks,
Dustin
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