Can't deploy a SINGLE bean in weblogic 6.1 SP2 w/o application reload

Anyone know how to update a single bean in an application without
redeploying the entire application?
We have a project containing 101 beans (session and entity) and 372
jsps which we are deploying on weblogic 6.1, SP2 as a single
application. The project is deployed in an exploded directory format
as follows:
trader/
META-INF/application.xml
lib/
third-party.jar
third-party.jar (etc.)
SessionBean.jar
EntityBean.jar (etc.)
trader/
WEB-INF/web.xml
META-INF/MANIFEST.MF (contains Class-Path: entry to lib dir)
jsp/html/gif's reside below this point.
Each bean jar has a META-INF/MANIFEST.MF to resolve third-party
library dependencies through the use of the Class-Path entry.
When we we try to update a single bean's implementation, the
entire application reloads, which can take between 10 - 30 minutes.
We have tried using the weblogic.deploy tool as well as undeploying
and redeploying the bean from the console. In both cases, the
entire application reloads.
When we use weblogic.deploy, we've tried the following:
weblogic.deploy
-url T3://localhost:7001
update weblogicpwd trader ~/trader/build/SessionBean.jar
and
weblogic.deploy
-url T3://localhost:7001
-component SessionBean:srvr1
update weblogicpwd trader ~/trader/build/SessionBean.jar

Anyone know how to update a single bean in an application without
redeploying the entire application?
We have a project containing 101 beans (session and entity) and 372
jsps which we are deploying on weblogic 6.1, SP2 as a single
application. The project is deployed in an exploded directory format
as follows:
trader/
META-INF/application.xml
lib/
third-party.jar
third-party.jar (etc.)
SessionBean.jar
EntityBean.jar (etc.)
trader/
WEB-INF/web.xml
META-INF/MANIFEST.MF (contains Class-Path: entry to lib dir)
jsp/html/gif's reside below this point.
Each bean jar has a META-INF/MANIFEST.MF to resolve third-party
library dependencies through the use of the Class-Path entry.
When we we try to update a single bean's implementation, the
entire application reloads, which can take between 10 - 30 minutes.
We have tried using the weblogic.deploy tool as well as undeploying
and redeploying the bean from the console. In both cases, the
entire application reloads.
When we use weblogic.deploy, we've tried the following:
weblogic.deploy
-url T3://localhost:7001
update weblogicpwd trader ~/trader/build/SessionBean.jar
and
weblogic.deploy
-url T3://localhost:7001
-component SessionBean:srvr1
update weblogicpwd trader ~/trader/build/SessionBean.jar

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  • WebLogic 6.1 SP2 stateful EJB handle serialization problem

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    The test code:
    try {
    InitialContext context = new InitialContext();
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    infSession1 = sessionHome.create();
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    ObjectOutputStream objector = new ObjectOutputStream(byteStream);
    objector.writeObject(infSession1.getHandle());
    objector.flush();
    objector.close();
    byte[] ejbKeyBytes = byteStream.toByteArray();
    // deserialize
    ByteArrayInputStream byteInStream = new
    ByteArrayInputStream(ejbKeyBytes);
    ObjectInputStream objStream = new ObjectInputStream(byteInStream);
    Handle ejbHandle = (Handle) objStream.readObject();
    objStream.close();
    InfSession infSession2 = (InfSession) ejbHandle.getEJBObject();
    if (!infSession2.equals(infSession1)) {
    throw new IllegalStateException("not equal: " + infSession2);
    } catch (Exception e) {
    e.printStackTrace();
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    at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1221)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:386)
    at java.io.ObjectInputStream.inputClassFields(ObjectInputStream.java:2263)
    at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:519)
    at weblogic.rmi.internal.StubInfo.readObject(StubInfo.java:73)
    at java.lang.reflect.Method.invoke(Native Method)
    at java.io.ObjectInputStream.invokeObjectReader(ObjectInputStream.java:2214)
    at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1411)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:386)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:236)
    at weblogic.ejb20.internal.HandleImpl.readExternal(HandleImpl.java:89)
    at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1212)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:386)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:236)
    I suppose that WebLogic uses a different handle on the server
    (LocalServerRef class, handle local to it's EJB) than on the client.
    I took the routine from Apache SOAP 2.2 StatefulEJBProvider. So I
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    Does anybody know of a workaround?
    Tom

    Just a small addition/clarification to what Cameron said on serialization.
    - The no argument constructor is required in the first non-serializable class in the object hierarchy for de-serialization process. If your class extends form Object class(which has a no arg constructor), you need not have a no-arg constructor. refere to http://64.49.216.133/faq/view.jsp?EID=251942 for more details.
    - Also I suggest using the api
    isIdentical(...)
    instead of equals method in the code if you are trying to establish whether the two objects represent the same EJBObject or not
    - Rajeev
    Cameron Purdy <[email protected]> wrote in message news:[email protected]...
    A no-argument constructor is required for a class to be deserialized. It
    sounds like a BEA bug from the stack trace, but make sure you don't have
    something extra that you are serializing on something of yours that should
    be transient. (It's hard to imagine how, but you never know ...)
    Peace,
    Cameron Purdy
    Tangosol, Inc.
    Clustering Weblogic? You're either using Coherence, or you should be!
    Download a Tangosol Coherence eval today at http://www.tangosol.com/
    "Tom Gerber" <[email protected]> wrote in message
    news:[email protected]...
    I try to serialize and later deserialize the handle of a stateful
    session bean in WebLogic 6.1 SP2. This works on the client, but not on
    the server. In WebLogic 6.1 SP1, it worked on both server and client.
    The test code:
    try {
    InitialContext context = new InitialContext();
    InfSessionHome sessionHome = (InfSessionHome)
    InfEJBUtil.getInfEJBHome
    (context, InfJNDINames.INFSESSION_EJBHOME,
    InfSessionHome.class);
    infSession1 = sessionHome.create();
    // serialize
    ObjectOutputStream objector = new ObjectOutputStream(byteStream);
    objector.writeObject(infSession1.getHandle());
    objector.flush();
    objector.close();
    byte[] ejbKeyBytes = byteStream.toByteArray();
    // deserialize
    ByteArrayInputStream byteInStream = new
    ByteArrayInputStream(ejbKeyBytes);
    ObjectInputStream objStream = new ObjectInputStream(byteInStream);
    Handle ejbHandle = (Handle) objStream.readObject();
    objStream.close();
    InfSession infSession2 = (InfSession) ejbHandle.getEJBObject();
    if (!infSession2.equals(infSession1)) {
    throw new IllegalStateException("not equal: " + infSession2);
    } catch (Exception e) {
    e.printStackTrace();
    I get the following stack trace in the readObject() call:
    java.io.InvalidClassException:
    weblogic.rmi.internal.LocalServerRefMissing no-arg constructor for
    class
    atjava.io.ObjectInputStream.inputObject(ObjectInputStream.java:1221)
    atjava.io.ObjectInputStream.readObject(ObjectInputStream.java:386)
    atjava.io.ObjectInputStream.inputClassFields(ObjectInputStream.java:2263)
    atjava.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:519)
    at weblogic.rmi.internal.StubInfo.readObject(StubInfo.java:73)
    at java.lang.reflect.Method.invoke(Native Method)
    atjava.io.ObjectInputStream.invokeObjectReader(ObjectInputStream.java:2214)
    atjava.io.ObjectInputStream.inputObject(ObjectInputStream.java:1411)
    atjava.io.ObjectInputStream.readObject(ObjectInputStream.java:386)
    atjava.io.ObjectInputStream.readObject(ObjectInputStream.java:236)
    atweblogic.ejb20.internal.HandleImpl.readExternal(HandleImpl.java:89)
    atjava.io.ObjectInputStream.inputObject(ObjectInputStream.java:1212)
    atjava.io.ObjectInputStream.readObject(ObjectInputStream.java:386)
    atjava.io.ObjectInputStream.readObject(ObjectInputStream.java:236)
    I suppose that WebLogic uses a different handle on the server
    (LocalServerRef class, handle local to it's EJB) than on the client.
    I took the routine from Apache SOAP 2.2 StatefulEJBProvider. So I
    suppose that more people are running into the same problem.
    Does anybody know of a workaround?
    Tom
    [att1.html]

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