Support Article
Pega-ProCom default SLA agent goes down repeatedly.
SA-2424
Summary
You notice in your logs and in System Management Application (agents tab) that the Pega-Procom ProcessServiceLevelEvents(SLA) agent is throwing an exception. After restart the agent, goes down again. This is an out of the box SLA agent that has not been customized.
Error Messages
Caught exception: java.lang.NullPointerException
com.pega.pegarules.engine.dictionary.ClassInfoImpl.getRuleSet(ClassInfoImpl.java:2658)
com.pega.pegarules.authorization.Authorization.getAccessGroupsForClass(Authorization.java:980)
com.pega.pegarules.authorization.Authorization.determineAccessGroupToUse(Authorization.java:1364)
com.pegarules.generated.pega_procom_pegaprocomutilities.ServiceLevelEvent205_04_02(pega_procom_pegaprocomutilities.java:3284)
com.pegarules.generated.pega_procom_pegaprocomutilities.ServiceLevelEvent2(pega_procom_pegaprocomutilities.java:3786)
com.pegarules.generated.activity.sh_action_checksla_44e18e1038b15f6a6f172c0d164985d3.step5_circum0(sh_action_checksla_44e18e1038b15f6a6f172c0d164985d3.java:427)
com.pegarules.generated.activity.sh_action_checksla_44e18e1038b15f6a6f172c0d164985d3.perform(sh_action_checksla_44e18e1038b15f6a6f172c0d164985d3.java:108)
com.pega.pegarules.engine.runtime.Executable.doActivity(Executable.java:3121)
com.pegarules.generated.activity.ra_action_executemaystartactivity_aa9c3015e95f63a3484681bc5833e528.step3_circum0(ra_action_executemaystartactivity_aa9c3015e95f63a3484681bc5833e528.java:450)
com.pegarules.generated.activity.ra_action_executemaystartactivity_aa9c3015e95f63a3484681bc5833e528.perform(ra_action_executemaystartactivity_aa9c3015e95f63a3484681bc5833e528.java:118)
com.pega.pegarules.engine.runtime.Executable.doActivity(Executable.java:3121)
com.pega.pegarules.engine.context.base.ThreadRunner.runActivitiesAlt(ThreadRunner.java:571)
com.pega.pegarules.engine.context.PRThreadImpl.runActivitiesAlt(PRThreadImpl.java:569)
com.pega.pegarules.services.HttpAPI.runActivities(HttpAPI.java:1775)
com.pega.pegarules.services.EngineAPI.processRequestInner(EngineAPI.java:326)
sun.reflect.GeneratedMethodAccessor113.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:619)
com.pega.pegarules.engine.context.PREnvironment.doWithRequestorLocked(PREnvironment.java:912)
com.pega.pegarules.engine.context.PREnvironment.doWithRequestorLocked(PREnvironment.java:677)
com.pega.pegarules.services.EngineAPI.processRequest(EngineAPI.java:260)
com.pega.pegarules.services.HttpAPI.invoke(HttpAPI.java:499)
com.pega.pegarules.etier.impl.EngineImpl._invokeEngine_privact(EngineImpl.java:280)
com.pega.pegarules.etier.impl.EngineImpl.invokeEngine(EngineImpl.java:231)
com.pega.pegarules.etier.ejb.EngineBean.invokeEngine(EngineBean.java:224)
sun.reflect.GeneratedMethodAccessor58.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:619)
com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethod(PRBootstrap.java:254)
com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethodPropagatingThrowable(PRBootstrap.java:295)
com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethodPropagatingException(PRBootstrap.java:317)
com.pega.pegarules.internal.etier.ejb.EngineBeanBoot.invokeEngine(EngineBeanBoot.java:162)
com.pega.pegarules.internal.etier.interfaces.EJSLocalStatelessEngineBMT_f2439d86.invokeEngine(Unknown Source)
com.pega.pegarules.priv.context.JNDIEnvironment.invokeEngineInner(JNDIEnvironment.java:274)
com.pega.pegarules.priv.context.JNDIEnvironment.invokeEngine(JNDIEnvironment.java:219)
com.pega.pegarules.web.impl.WebStandardImpl.makeEtierRequest(WebStandardImpl.java:308)
com.pega.pegarules.web.impl.WebStandardImpl.doPost(WebStandardImpl.java:202)
sun.reflect.GeneratedMethodAccessor112.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:619)
com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethod(PRBootstrap.java:254)
com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethodPropagatingThrowable(PRBootstrap.java:295)
com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethod(PRBootstrap.java:344)
com.pega.pegarules.internal.web.servlet.WebStandardBoot.doPost(WebStandardBoot.java:93)
com.pega.pegarules.internal.web.servlet.WebStandardBoot.doGet(WebStandardBoot.java:83)
javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1213)
com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:658)
com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:526)
com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:90)
com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:777)
com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1478)
com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:133)
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:457)
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:515)
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:300)
com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:102)
com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:136)
com.ibm.io.async.ResultHandler.complete(ResultHandler.java:196)
com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:751)
com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:881)
com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1595)
Which caused: com.pega.pegarules.pub.PRRuntimeError: PRRuntimeError
com.pega.pegarules.engine.context.base.ThreadRunner.runActivitiesAlt(ThreadRunner.java:635)
com.pega.pegarules.engine.context.PRThreadImpl.runActivitiesAlt(PRThreadImpl.java:569)
com.pega.pegarules.services.HttpAPI.runActivities(HttpAPI.java:1775)
com.pega.pegarules.services.EngineAPI.processRequestInner(EngineAPI.java:326)
sun.reflect.GeneratedMethodAccessor113.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:619)
com.pega.pegarules.engine.context.PREnvironment.doWithRequestorLocked(PREnvironment.java:912)
com.pega.pegarules.engine.context.PREnvironment.doWithRequestorLocked(PREnvironment.java:677)
com.pega.pegarules.services.EngineAPI.processRequest(EngineAPI.java:260)
com.pega.pegarules.services.HttpAPI.invoke(HttpAPI.java:499)
com.pega.pegarules.etier.impl.EngineImpl._invokeEngine_privact(EngineImpl.java:280)
com.pega.pegarules.etier.impl.EngineImpl.invokeEngine(EngineImpl.java:231)
com.pega.pegarules.etier.ejb.EngineBean.invokeEngine(EngineBean.java:224)
sun.reflect.GeneratedMethodAccessor58.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:619)
com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethod(PRBootstrap.java:254)
com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethodPropagatingThrowable(PRBootstrap.java:295)
com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethodPropagatingException(PRBootstrap.java:317)
com.pega.pegarules.internal.etier.ejb.EngineBeanBoot.invokeEngine(EngineBeanBoot.java:162)
com.pega.pegarules.internal.etier.interfaces.EJSLocalStatelessEngineBMT_f2439d86.invokeEngine(Unknown Source)
com.pega.pegarules.priv.context.JNDIEnvironment.invokeEngineInner(JNDIEnvironment.java:274)
com.pega.pegarules.priv.context.JNDIEnvironment.invokeEngine(JNDIEnvironment.java:219)
com.pega.pegarules.web.impl.WebStandardImpl.makeEtierRequest(WebStandardImpl.java:308)
com.pega.pegarules.web.impl.WebStandardImpl.doPost(WebStandardImpl.java:202)
sun.reflect.GeneratedMethodAccessor112.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:619)
com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethod(PRBootstrap.java:254)
com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethodPropagatingThrowable(PRBootstrap.java:295)
com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethod(PRBootstrap.java:344)
com.pega.pegarules.internal.web.servlet.WebStandardBoot.doPost(WebStandardBoot.java:93)
com.pega.pegarules.internal.web.servlet.WebStandardBoot.doGet(WebStandardBoot.java:83)
javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1213)
com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:658)
com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:526)
com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:90)
com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:777)
com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1478)
com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:133)
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:457)
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:515)
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:300)
com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:102)
com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:136)
com.ibm.io.async.ResultHandler.complete(ResultHandler.java:196)
com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:751)
com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:881)
com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1595)
Steps to Reproduce
- Create an entry in PC_ASSIGN_WORKBASKET table with all null fields
- Agent will throw exception processing said workbasket item
Root Cause
The root cause of this problem is a defect/misconfiguration in the PRPC operating environment. There is a erroneous object in the PC_ASSIGN_WORKBASKET table that requires correction or removal.
Resolution
The root cause of this problem is defect/misconfiguration in the PRPC operating environment.
To correct the erroneous object in the workbasket.(removal method)
- Please back up your database
- select * from (Your database prefix).PC_ASSIGN_WORKBASKET where pzInsKey = 'ASSIGN-WORKBASKET !'
- Review item
- Delete from from (Your database prefix).pc_assign_workbasket where pzInsKey = 'ASSIGN-WORKBASKET !'
- select * from (Your database prefix).PC_ASSIGN_WORKBASKET where pzInsKey = 'ASSIGN-WORKBASKET !'
- Review item
- Then restart your agents
Published January 31, 2016 - Updated October 8, 2020
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