Migration from Weblogic 6.1 to 8.1

[Saurabh Agrawal]

Hi everyone,

I am having a sample web application which comprises of JSP , EJB etc. It was orginally meant to run on weblogic 6.1.

Now we want to migrate the same to Weblogic 8.1. So can anyone tell me what steps needs to be performed to attain the same?

Is it a long process of just some start up script modification? If anyone can cite some steps to attain the same then it will be of great help to me.

Thanks in advance,
Saurabh

[Saurabh Agrawal]

Hi,

I have tried to install Weblogic 8.1 and made some script changes in my application to deploy it on 8.1.

But when i am trying to run my weblogic 8.1, it gives the following error:

Unable to deploy EJB: emailautomation.jar from emailautomation.jar:


Compiler class: 'com.sun.tools.javac.Main', not found

at weblogic.ejb20.ejbc.EJBCompiler.doCompile(EJBCompiler.java:274)
at weblogic.ejb20.ejbc.EJBCompiler.compileEJB(EJBCompiler.java:476)
at weblogic.ejb20.ejbc.EJBCompiler.compileEJB(EJBCompiler.java:407)
at weblogic.ejb20.deployer.EJBDeployer.runEJBC(EJBDeployer.java:493)
at weblogic.ejb20.deployer.EJBDeployer.compileJar(EJBDeployer.java:784)
at weblogic.ejb20.deployer.EJBDeployer.compileIfNecessary(EJBDeployer.java:700)
at weblogic.ejb20.deployer.EJBDeployer.prepare(EJBDeployer.java:1339)
at weblogic.ejb20.deployer.Deployer.deploy(Deployer.java:267)
at weblogic.j2ee.EJBComponent.deploy(EJBComponent.java:83)
at weblogic.j2ee.Application.addComponent(Application.java:322)
at weblogic.j2ee.J2EEService.addDeployment(J2EEService.java:162)
at weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(DeploymentTarget.java:337)
at weblogic.management.mbeans.custom.DeploymentTarget.addDeployments(DeploymentTarget.java:597)
at weblogic.management.mbeans.custom.DeploymentTarget.updateServerDeployments(DeploymentTarget.java:575)
at weblogic.management.mbeans.custom.DeploymentTarget.updateDeployments(DeploymentTarget.java:241)
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 weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl.java:754)
at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:733)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBeanImpl.java:509)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1560)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1528)
at weblogic.management.internal.RemoteMBeanServerImpl.private_invoke(RemoteMBeanServerImpl.java:988)
at weblogic.management.internal.RemoteMBeanServerImpl.invoke(RemoteMBeanServerImpl.java:946)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:954)
at weblogic.management.internal.MBeanProxy.invokeForCachingStub(MBeanProxy.java:481)
at weblogic.management.configuration.ServerMBean_Stub.updateDeployments(ServerMBean_Stub.java:7691)
at weblogic.management.deploy.slave.SlaveDeployer.updateServerDeployments(SlaveDeployer.java:1304)
at weblogic.management.deploy.slave.SlaveDeployer.resume(SlaveDeployer.java:347)
at weblogic.management.deploy.DeploymentManagerServerLifeCycleImpl.resume(DeploymentManagerServerLifeCycleImpl.java:229)
at weblogic.t3.srvr.SubsystemManager.resume(SubsystemManager.java:131)
at weblogic.t3.srvr.T3Srvr.resume(T3Srvr.java:966)
at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:361)
at weblogic.Server.main(Server.java:32)


Can anyone tell me what can be the possible cause of this error?? Do i need to make changes somewhere or am i missing one something?

Thanks in advance,
Saurabh

[Purushoth Thambu]

It looks more like a classpath setup issue. check to see if tools.jar is in the classpath.