Hi all,

Does any body know how to redeploy a web application in weblogic without restarting the server?

I have my application in the exploded file format...

I am using weblogic 8.1 and i want to know whether there is any Hot Deployment feature in 8.1.

I've gone thru the weblogic 7.0 documentation. It says that the server automatically reloads all the files every x secs. which we can specify in the console.

but doing so doesn;t reflect my changes......

is there any other way? (i've tried touching the REDEPLOY file too)..

Thanks,
Seshu

You certainly do not need to stop the app server to redeploy an application. For Weblogic, make sure you are running the server in "development" mode, which means that if you change any files in your web application, such as JSPs, the server will automatically pick up the changes.

You should also be able to perform a simple undeploy then redeploy of the web application in the event you changed class files, etc, and you need the latest class files to be loaded by the class loader.

Raffi

the server automatically recompiles the JSP pages. that is ok. but if i need my modified ejb/servlet classes to be deployed while the server is running what is the method to do it?

when i do undeploy/deploy thru the console....the server throws some exceptions when i access the files...

Try setting the following property in your weblogic.xml:

<container-descriptor>
    <servlet-reload-check-secs>1</servlet-reload-check-secs>
</container-descriptor>

This will reload any changed servlets every second. I don't know if this works for hot-deploying EJBs, but it seems to work with chaning classes with exploded web apps.

-dan

In startweblogic.cmd file set set STARTMODE parameter to false
i.e. put the command
set STARTMODE=false . This will start the server in development mode
hence your changes will be automatically reflected.

The server is running in development mode. The first time i touch the REDPLOY file it works fine...but the next time i do it....i get the following exception:

javax.ejb.NoSuchObjectLocalException: Bean is already undeployed.: java.rmi.NoSu
chObjectException: Bean is already undeployed.
        at weblogic.ejb20.manager.BaseEJBManager.preInvoke(BaseEJBManager.java:9
4)
        at weblogic.ejb20.manager.StatelessManager.preInvoke(StatelessManager.ja
va:124)
        at weblogic.ejb20.internal.BaseEJBLocalObject.preInvoke(BaseEJBLocalObje
ct.java:229)
        at weblogic.ejb20.internal.StatelessEJBLocalObject.preInvoke(StatelessEJ
BLocalObject.java:54)
        at era.user.UserManager_iq4580_ELOImpl.getAllUsers(UserManager_iq4580_EL
OImpl.java:838)
        at era.user.EditFacultyProfileAction.doExecute(Unknown Source)
        at webwork.action.ActionSupport.execute(ActionSupport.java:108)
        at webwork.view.taglib.ActionTag$1.getValue(ActionTag.java:82)
        at webwork.util.AbstractValueStack.findValue(AbstractValueStack.java:306
)
        at webwork.view.taglib.WebWorkBodyTagSupport.findValue(WebWorkBodyTagSup
port.java:57)
        at webwork.view.taglib.IteratorTag.doStartTag(IteratorTag.java:71)
        at jsp_servlet._staff.__add_faculty._jspService(__add_faculty.java:742)
        at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
        at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run
(ServletStubImpl.java:1053)
        at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:387)
        at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:305)
        at weblogic.servlet.internal.WebAppServletContext$ServletInvocationActio
n.run(WebAppServletContext.java:6291)
        at weblogic.security.acl.internal.AuthenticatedSubject.doAs(Authenticate
dSubject.java:317)
        at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:
97)
        at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
rvletContext.java:3575)
        at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
pl.java:2573)
        at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:178)
        at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:151)

        at weblogic.ejb20.internal.EJBRuntimeUtils.throwEJBException(EJBRuntimeU
tils.java:146)
        at weblogic.ejb20.internal.BaseEJBLocalHome.handleSystemException(BaseEJ
BLocalHome.java:228)
        at weblogic.ejb20.internal.BaseEJBLocalObject.preInvoke(BaseEJBLocalObje
ct.java:234)
        at weblogic.ejb20.internal.StatelessEJBLocalObject.preInvoke(StatelessEJ
BLocalObject.java:54)
        at era.user.UserManager_iq4580_ELOImpl.getAllUsers(UserManager_iq4580_EL
OImpl.java:838)
        at era.user.EditFacultyProfileAction.doExecute(Unknown Source)
        at webwork.action.ActionSupport.execute(ActionSupport.java:108)
        at webwork.view.taglib.ActionTag$1.getValue(ActionTag.java:82)
        at webwork.util.AbstractValueStack.findValue(AbstractValueStack.java:306
)
        at webwork.view.taglib.WebWorkBodyTagSupport.findValue(WebWorkBodyTagSup
port.java:57)
        at webwork.view.taglib.IteratorTag.doStartTag(IteratorTag.java:71)
        at jsp_servlet._staff.__add_faculty._jspService(__add_faculty.java:742)
        at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
        at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run
(ServletStubImpl.java:1053)
        at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:387)
        at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:305)
        at weblogic.servlet.internal.WebAppServletContext$ServletInvocationActio
n.run(WebAppServletContext.java:6291)
        at weblogic.security.acl.internal.AuthenticatedSubject.doAs(Authenticate
dSubject.java:317)
        at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:
97)
        at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
rvletContext.java:3575)
        at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
pl.java:2573)
        at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:178)
        at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:151)

Thanks,
Seshu

Looks like you are using utility classes that are not getting reloaded.
Try the weblogic.deploy
You can configure Ant to do it.

good luck

java.rmi.NoSuchObjectException: Bean is already undeployed

Below its mentioned about the problem. In our current application we do not use war/ear. We deploy it using jar directly using utility.

In console its displayed that bean is deployed but in application it throws this exception and states that bean is undeployed.

If we start the application again all the beans are deployed and working fine.

In cmd console this exception is thrown whenever it tries to access the application when domain is started for first time. Second time start it runs smoothly without errors.