Hot deployment of servlet

hi
i have compiled the servlet in jdeveloper and set the path to oc4j../../web-inf/classes path;after compiling the class Is it neccassary to shutdown the oc4j container;
after shutdown the container only i am seeing the effect;without shutdown the container can we see the effect;we can do it Tomcat ;Is there any facility in OC4J ;
bye
chaitanya

          Hi, suppose you have the servlet called JoeServlet and registered as joeservlet with an argument, say, a file joe.txt. If you want to 'hot' deploy the JoeServlet you should make sure that a) the servlet's name must be unique b) the servlet's class must be in your servlet classpath (see the properties sheet aside) c) the initial argument, say: joeargument=./joe.txt, must match the the name expected by your servlet (eg. getInitParameter("joeargument")). If you have done correctly WLS must work.
          Joe
          "Jayesh Patel" <[email protected]> wrote:
          >
          >I am trying to hot deploy a simple servlet using weblogic console.
          >
          >I am getting error saying that
          >
          >"Property change error for property "RegisterNewServlet".
          >Servlet could not be loaded or instantiated"
          >
          >I am sure that servlet class I am trying to load is in servlet
          >class path.
          >
          >Any idea what is going wrong here.
          >
          >Thanks.
          >
          >
          >
          

Similar Messages

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    "M. Hammer" wrote:
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    Thanx,
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  • Servlet Hot-Deploy with a WebApp

    Hi everybody,
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    "M. Hammer" wrote:
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  • Hot Deploying Servlets from the command line

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  • Hot Deploy Servlet in JAR file problem

    I've been playing with hot deploying servlets in WLS 5.1. I have SP2
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              Does anyone know how I can cause the reload of updated servlets embedded
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    Hi,
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              Pan
              Subject: Re: Hot deploy Servlet in webapp
              > http://www.weblogic.com/docs51/classdocs/API_servlet.html#134798
              >
              > It even explains why you shouldn't use it in production environment.
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              > Dimitri
              

  • Hot deploy Servlet in webapp

    Can I hot deploy a servlet within a web application ?How should I do it?
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              work correctly(error 404))
              

    Hi,
              If I use weblogic.servlet.ServletServlet to try just the servlet , It
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              Thank you
              Pan
              Subject: Re: Hot deploy Servlet in webapp
              > http://www.weblogic.com/docs51/classdocs/API_servlet.html#134798
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              >
              > Dimitri
              

  • Problems trying to "hot-deploy" class files in iPlanet. Want to deploy a compiled class (i.e. servlet, jsp) without having to bounce the server. Known issue in iPlanet? How can I get around?

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  • Servlet hot-deployment

    Is there a way to deploy Servlets without shutingdown the server. I've
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              Kumar Allamraju a écrit :
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  • Hot deploying servlets without the admin tool

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  • Hot deployment of class files (non-EJB)

     

    Also posting to the servlet newsgroup.
    "Craig Ambrose" <[email protected]> wrote in message
    news:[email protected]..
    >
    I am using WebLogic 6.1 and am interested in using auto-deployment indevelopment
    mode of JSPs and class files that those JSPs rely on. I have a simpleWebLogic
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  • Hot deployment while running...

    Hi there!
    Does any body have experience HotDeployment while end user are using the application?
    For my self I got a real problem with HttpSession. After hot deployment all
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    Thanks!

    redeploying will invalidate a servlet session. this is not a bug, but rather the intended
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    if all you want to do is update content (jsp's, html, gif, jpeg, etc) you can use the
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    tracey
    "Thierry Giguère" wrote:
    Hi there!
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  • Previous unanswered Hot deploy of non EJB, non JSP classes

              Subject to my last post I've since seen my questions has appeared twice on this
              newsgroup, March 2001, and Nov 2000 and no responses to it those times. Aren't
              there BEA engineers reading this newsgroup who would know the answer to that question?
              http://newsgroups.bea.com/cgi-bin/dnewsweb?cmd=article&group=weblogic.developer.interest.jsp&item=3776&utag=
              http://newsgroups.bea.com/cgi-bin/dnewsweb?cmd=article&group=weblogic.developer.interest.jsp&item=5171&utag=
              

              Firstly I already did call BEA support before coming here, this is my last resort.
              I can't get a definitive answer from support. They were the ones that actually
              suggested to me that I post here in the first place. I did search the BEA edocs
              and couldn't find anything on it.
              Secondly, I am using WL 6.1 SP1, and in the thread just beneath this one, which
              I referred to directly in my opening post on this thread, I do mention this in
              the opening paragraph, in fact I give considerable detail.
              Thirdly, I never implied there was an onus on any BEA engineer to answer anything
              here. What I did mean was that given that they do read these posts and they do
              answer posts, I was merely a bit concerned that as I'm third person to ask, it
              would be strange to still get no response given that they answer other questions.
              I mean if they don't know, then who does? It's a real simple yes/no answer, it
              would take 5 seconds.
              Paul
              Robert Patrick <[email protected]> wrote:
              >
              >
              >The answer is simple -- move to WLS 6.x and use enterprise applications
              >(or web applications or an EJB jar file)
              >to package everything up into a single deployment unit and hot deploy
              >the whole deployment unit. WLS 5.1 and
              >earlier do not support hot deployment of non-servlet/non-JSP/non-EJB
              >classes.
              >
              >Mike Reiche wrote:
              >
              >> You can always call BEA Support - 1.888.232.7878 to get the help you
              >need. This
              >> newsgroup is not official BEA Support. It is out of the goodness of
              >their hearts
              >> that BEA engineers help people out here.
              >>
              >> I don't really think you wanted everyone that read your email and didn't
              >know
              >> if such a feature was available, to send you an email saying 'No, I
              >don't know
              >> if such a feature is available'. That's why there were zero responses.
              >>
              >> None of the posts you listed mention what version of WL. That makes
              >a difference.
              >> Also read the online documentation at edocs.bea.com, search for 'hot
              >deploy'.
              >>
              >> Mike Reiche
              >>
              >> "Paul H" <[email protected]> wrote:
              >> >
              >> >Subject to my last post I've since seen my questions has appeared
              >twice
              >> >on this
              >> >newsgroup, March 2001, and Nov 2000 and no responses to it those times.
              >> >Aren't
              >> >there BEA engineers reading this newsgroup who would know the answer
              >> >to that question?
              >> >
              >> >http://newsgroups.bea.com/cgi-bin/dnewsweb?cmd=article&group=weblogic.developer.interest.jsp&item=3776&utag=
              >> >
              >> >http://newsgroups.bea.com/cgi-bin/dnewsweb?cmd=article&group=weblogic.developer.interest.jsp&item=5171&utag=
              >
              >
              ><!doctype html public "-//w3c//dtd html 4.0 transitional//en">
              ><html>
              >The answer is simple -- move to WLS 6.x and use enterprise applications
              >(or web applications or an EJB jar file) to package everything up into
              >a single deployment unit and hot deploy the whole deployment unit. 
              >WLS 5.1 and earlier do not support hot deployment of non-servlet/non-JSP/non-EJB
              >classes.
              ><p>Mike Reiche wrote:
              ><blockquote TYPE=CITE>You can always call BEA Support - 1.888.232.7878
              >to get the help you need.  This
              ><br>newsgroup is not official BEA Support. It is out of the goodness
              >of
              >their hearts
              ><br>that BEA engineers help people out here.
              ><p>I don't really think you wanted everyone that read your email and
              >didn't
              >know
              ><br>if such a feature was available, to send you an email saying 'No,
              >I
              >don't know
              ><br>if such a feature is available'. That's why there were zero responses.
              ><p>None of the posts you listed mention what version of WL. That makes
              >a difference.
              ><br> Also read the online documentation at edocs.bea.com, search
              >for
              >'hot deploy'.
              ><p>Mike Reiche
              ><p>"Paul H" <[email protected]> wrote:
              ><br>>
              ><br>>Subject to my last post I've since seen my questions has appeared
              >twice
              ><br>>on this
              ><br>>newsgroup, March 2001, and Nov 2000 and no responses to it those
              >times.
              ><br>>Aren't
              ><br>>there BEA engineers reading this newsgroup who would know the answer
              ><br>>to that question?
              ><br>>
              ><br>>http://newsgroups.bea.com/cgi-bin/dnewsweb?cmd=article&group=weblogic.developer.interest.jsp&item=3776&utag=
              ><br>>
              ><br>>http://newsgroups.bea.com/cgi-bin/dnewsweb?cmd=article&group=weblogic.developer.interest.jsp&item=5171&utag=</blockquote>
              ></html>
              >
              >
              

  • Auto Deployment versus Hot Deployment

    Hi,
    Can anyone one please tell me what the real difference is between auto deployment versus hot deployment in WLS 8.1 SP4 as I am confused after reading the documentation.
    Can they both be individually enabled or disabled?
    Can I just disable Auto deployment and only use Hot deployment (or is hot deployment another name for manual deployment).
    I know in Jrun that you can add hot-deploy directories in Jrun console, where now when a developers put a new WAR file or an updated WAR file - the server automatically deploys/redeploys it at that moment (this hot deploy directory could be any directory on the server or even on a different NTFS drive on same server).
    Can this be achieved with WLS 8.1?
    Thanks
    J

    AutoDeployment automatically deploy/redeploy or undeploy the application when the application is put or removed from the applications folder under the wls domain directory. It is only available in Admin Server while it is running in development mode (default mode). It is not available if the Admin Server is running in Production mode.
    Hot deployment deals with updating the application modules like ejb or war inside an ear without redeploying the complete application. This is dependent on the classloader structure of the given application. So if a ear has a webapp and a ejb with default classloader structure, then only the webapp can be hot redeployed without complete application redeploy. It can be used for apps deployed on both Admin and Managed servers and is available for both production and development mode.
    Autodeployment is mainly to save the developer from running the deploy command every time while the app is being developed iteratively. Just copying the updated application in the applications folder will redeploy the app on the Admin server.
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  • Collaborative Development / Hot Deployment?

    We are a small development team (5-7 people) and have a need to develop collaboratively because each of us is working on small parts of a large application, and we have code dependencies upon eachother. We are looking for suggestions on how to develop collaboratively.
    We have attempted to use 9iAS to develop on - but every time we change any class files, we have to restart the OC4J container for them to be recognized error free. JDeveloper is out of the question because our current PC's cannot handle it (PII ~ 350mhz, 256RAM) and we cannot get new PC's for another year. We have attempted to run a standalone instance of OC4J on the server, but that still requires restarting the instance anytime classes are changed.
    Does anyone have any suggestions for collaborative development? Does anyone know of an environment that has a working hot deployment feature? We are not developing any EJB's, it is strictly a JSP/Servlet solution with Data Access classes for database interaction.

    Semi-speculation on my part follows:
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              "Josh Garcia" <[email protected]> wrote in message
              news:3e1deefc$[email protected]..
              >
              > As I understand, hot deployment should ONLY occur when server(s) are in
              development
              > mode. Are there any cases where hot deployment can occur even when
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              > in production mode?
              >
              > A little more detail:
              >
              > We are running a WLS 7 SP1 cluster, and, even though our administration
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              > servers when placed in the 'applications' directory. Should this be the
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              > I thought that I had to physically redeploy through the console if I was
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              >
              > Josh
              

  • Hot deployment and JMX

    Hi,
    I need to know how classes are loaded in hot deployment. my problem is that I'm using a JMX server that has some MBeans registered into it, but when I redeploy an application, and the JMX server is recreated as are the MBeans, the JMX agent clearly points to the old instances of the MBeans instead of the redployed ones. It seems that only restarting the OC4J would fix the pointers.
    Is there any way to fix this? or do I have to restart the server every time I deploy an application?

    What option are you using for deployment ? Are you choosing re-deploy ? We recommend Oracle9iAS install in a test/production environment when
    the application has stabilized.
    Also if you are in a development mode and constantly changing your applications you should consider deploying your apps in standalone OC4J. You can choose to do open-expanded directory deployment.
    If you are using OC4J standalone:
    1) you can replace the EAR file in applications directory and it redeploys
    2) you can replace a Servlet class and change the time stamp on web.xml and it redeploys the srvlets
    3) It automatically redeploys the JSP files
    4) If your EJBs are changed, replace your EJBs and change the timestamp on application.xml and it redeploys
    Some of these options are disabled in OC4J embedded in Oracle9iAS to provide a stable environment for production applications.
    If you still have problems in hot-deployment in OC4J please send me a test case at [email protected]
    thanks
    Debu

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