Applet : Why Weblogic RMI is so huge ???
Hi,
I'm using Weblogic RMI in an applet, and the applet startup time is unacceptable.
In order to find out what files are actually needed by the applet , instead of
using a JAR file, I uncompressed weblogic.jar and looked at my web server log
file as the applet was coming up. The log file is attached, so please take a look.
Is there a way to load less stuff ?
Thanks,
Jarek
[applet_startup.log]
Okay, you obviously don't understand how the String class works.
Your code is slow because the "+" operator for String objects doesn't really concat to the string, it creates a new String. Object creation takes time. Try using a StringBuffer instead.
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I am having a applet which is signed and loaded from the web application. When i am accessing the remote functions from RMI server, it works fine.
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Hi,
<b>I am trying to access EJB from an applet thro' ejb-client.jar. It works fine if I include weblogic.jar in the applet archive but it throws a corba exception if I use wlclient.jar and wljmsclient.jar instead of weblogic.jar in the archive. As weblogic.jar is too huge <b>I want to use thin clients</b>. Could someone help me with this exception. I am using WLS8.1_sp4; jdk 1.4.2_05 and ie6 with latest jvm. Both applet and ejb are deployed in same localhost</b>
com.sun.corba.se.internal.iiop.ConnectionTable(Thread[thread applet-informatics.inventory.plates.editor.PlateMapEditor.class,
4,file:/C:/projects/perforce/java/PlateMapViewer/-threadGroup]): Client get called: host = localhost port = 7001
com.sun.corba.se.internal.iiop.ConnectionTable(Thread[thread applet-informatics.inventory.plates.editor.PlateMapEditor.class,
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te_host=localhost remote_port=7001 state=ESTABLISHED]
com.sun.corba.se.internal.iiop.MessageMediator(Thread[JavaIDL Reader for localhost:7001,4,ORB ThreadGroup]): Creating message
from stream
com.sun.corba.se.internal.iiop.ConnectionTable(Thread[thread applet-informatics.inventory.plates.editor.PlateMapEditor.class,
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com.sun.corba.se.internal.iiop.MessageMediator(Thread[JavaIDL Reader for localhost:7001,4,ORB ThreadGroup]): Reading the mess
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com.sun.corba.se.internal.iiop.MessageMediator(Thread[JavaIDL Reader for localhost:7001,4,ORB ThreadGroup]): Handling GIOP 1.
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com.sun.corba.se.internal.iiop.IIOPInputStream(Thread[JavaIDL Reader for localhost:7001,4,ORB ThreadGroup]): Constructing IIO
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com.sun.corba.se.internal.iiop.IIOPInputStream(Thread[JavaIDL Reader for localhost:7001,4,ORB ThreadGroup]): Setting the time
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com.sun.corba.se.internal.iiop.MessageMediator(Thread[JavaIDL Reader for localhost:7001,4,ORB ThreadGroup]): Creating message
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com.sun.corba.se.internal.iiop.MessageMediator(Thread[JavaIDL Reader for 172.16.65.14:7001,4,ORB ThreadGroup]): Creating mess
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com.sun.corba.se.internal.iiop.ConnectionTable(Thread[thread applet-informatics.inventory.plates.editor.PlateMapEditor.class,
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com.sun.corba.se.internal.iiop.GIOPImpl(Thread[thread applet-informatics.inventory.plates.editor.PlateMapEditor.class,4,file:
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com.sun.corba.se.internal.iiop.GIOPImpl(Thread[thread applet-informatics.inventory.plates.editor.PlateMapEditor.class,4,file:
/C:/projects/perforce/java/PlateMapViewer/-threadGroup]): createListener( socketType = IIOP_CLEAR_TEXT port = 0 )
javax.naming.NamingException: Unhandled exception in lookup [Root exception is org.omg.CORBA.MARSHAL: vmcid: SUN minor cod
e: 217 completed: Maybe]
at weblogic.corba.j2ee.naming.Utils.wrapNamingException(Utils.java:81)
at weblogic.corba.j2ee.naming.ContextImpl.lookup(ContextImpl.java:237)
at weblogic.corba.j2ee.naming.ContextImpl.lookup(ContextImpl.java:171)
at javax.naming.InitialContext.lookup(InitialContext.java:347)
at informatics.inventory.plates.editor.EJBPlateMapDAO.<init>(Unknown Source)
at informatics.inventory.plates.editor.PlateMapEditor.init(Unknown Source)
at sun.applet.AppletPanel.run(AppletPanel.java:353)
at java.lang.Thread.run(Thread.java:534)
Caused by: org.omg.CORBA.MARSHAL: vmcid: SUN minor code: 217 completed: Maybe
at com.sun.corba.se.internal.iiop.CDROutputStream_1_0.write_wstring(CDROutputStream_1_0.java:464)
at com.sun.corba.se.internal.iiop.CDROutputStream.write_wstring(CDROutputStream.java:189)
at weblogic.corba.cos.naming.NamingContextAnyPackage.WNameComponentHelper.write(WNameComponentHelper.java:79)
at weblogic.corba.cos.naming.NamingContextAnyPackage.WNameHelper.write(WNameHelper.java:59)
at weblogic.corba.cos.naming._NamingContextAnyStub.resolve_any(_NamingContextAnyStub.java:79)
at weblogic.corba.j2ee.naming.ContextImpl.lookup(ContextImpl.java:213)
... 6 moreHi,
<b>I am trying to access EJB from an applet thro' ejb-client.jar. It works fine if I include weblogic.jar in the applet archive but it throws a corba exception if I use wlclient.jar and wljmsclient.jar instead of weblogic.jar in the archive. As weblogic.jar is too huge <b>I want to use thin clients</b>. Could someone help me with this exception. I am using WLS8.1_sp4; jdk 1.4.2_05 and ie6 with latest jvm. Both applet and ejb are deployed in same localhost</b>
com.sun.corba.se.internal.iiop.ConnectionTable(Thread[thread applet-informatics.inventory.plates.editor.PlateMapEditor.class,
4,file:/C:/projects/perforce/java/PlateMapViewer/-threadGroup]): Client get called: host = localhost port = 7001
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4,file:/C:/projects/perforce/java/PlateMapViewer/-threadGroup]): Creating new connection Connection[type=IIOP_CLEAR_TEXT remo
te_host=localhost remote_port=7001 state=ESTABLISHED]
com.sun.corba.se.internal.iiop.MessageMediator(Thread[JavaIDL Reader for localhost:7001,4,ORB ThreadGroup]): Creating message
from stream
com.sun.corba.se.internal.iiop.ConnectionTable(Thread[thread applet-informatics.inventory.plates.editor.PlateMapEditor.class,
4,file:/C:/projects/perforce/java/PlateMapViewer/-threadGroup]): Succesfully created socket for new connection
com.sun.corba.se.internal.iiop.MessageMediator(Thread[JavaIDL Reader for localhost:7001,4,ORB ThreadGroup]): Reading the mess
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com.sun.corba.se.internal.iiop.MessageMediator(Thread[JavaIDL Reader for localhost:7001,4,ORB ThreadGroup]): Handling GIOP 1.
0 LocateReply
com.sun.corba.se.internal.iiop.IIOPInputStream(Thread[JavaIDL Reader for localhost:7001,4,ORB ThreadGroup]): Constructing IIO
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com.sun.corba.se.internal.iiop.MessageMediator(Thread[JavaIDL Reader for localhost:7001,4,ORB ThreadGroup]): Creating message
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com.sun.corba.se.internal.iiop.ConnectionTable(Thread[thread applet-informatics.inventory.plates.editor.PlateMapEditor.class,
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4,file:/C:/projects/perforce/java/PlateMapViewer/-threadGroup]): Creating new connection Connection[type=IIOP_CLEAR_TEXT remo
te_host=172.16.65.14 remote_port=7001 state=ESTABLISHED]
com.sun.corba.se.internal.iiop.MessageMediator(Thread[JavaIDL Reader for 172.16.65.14:7001,4,ORB ThreadGroup]): Creating mess
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com.sun.corba.se.internal.iiop.ConnectionTable(Thread[thread applet-informatics.inventory.plates.editor.PlateMapEditor.class,
4,file:/C:/projects/perforce/java/PlateMapViewer/-threadGroup]): Succesfully created socket for new connection
com.sun.corba.se.internal.iiop.GIOPImpl(Thread[thread applet-informatics.inventory.plates.editor.PlateMapEditor.class,4,file:
/C:/projects/perforce/java/PlateMapViewer/-threadGroup]): getEndpoint(IIOP_CLEAR_TEXT, 0, null)
com.sun.corba.se.internal.iiop.GIOPImpl(Thread[thread applet-informatics.inventory.plates.editor.PlateMapEditor.class,4,file:
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javax.naming.NamingException: Unhandled exception in lookup [Root exception is org.omg.CORBA.MARSHAL: vmcid: SUN minor cod
e: 217 completed: Maybe]
at weblogic.corba.j2ee.naming.Utils.wrapNamingException(Utils.java:81)
at weblogic.corba.j2ee.naming.ContextImpl.lookup(ContextImpl.java:237)
at weblogic.corba.j2ee.naming.ContextImpl.lookup(ContextImpl.java:171)
at javax.naming.InitialContext.lookup(InitialContext.java:347)
at informatics.inventory.plates.editor.EJBPlateMapDAO.<init>(Unknown Source)
at informatics.inventory.plates.editor.PlateMapEditor.init(Unknown Source)
at sun.applet.AppletPanel.run(AppletPanel.java:353)
at java.lang.Thread.run(Thread.java:534)
Caused by: org.omg.CORBA.MARSHAL: vmcid: SUN minor code: 217 completed: Maybe
at com.sun.corba.se.internal.iiop.CDROutputStream_1_0.write_wstring(CDROutputStream_1_0.java:464)
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at weblogic.corba.cos.naming.NamingContextAnyPackage.WNameComponentHelper.write(WNameComponentHelper.java:79)
at weblogic.corba.cos.naming.NamingContextAnyPackage.WNameHelper.write(WNameHelper.java:59)
at weblogic.corba.cos.naming._NamingContextAnyStub.resolve_any(_NamingContextAnyStub.java:79)
at weblogic.corba.j2ee.naming.ContextImpl.lookup(ContextImpl.java:213)
... 6 more -
Problem in Loading Applet using WebLogic 4.5
Hi!
When I try this Hello example of weblogic in 4.5 I am getting the following error.
How to resolve this?
Very Urgent.
thanks in advance.
regards,
jai
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--------------- nested within: ------------------
weblogic.rmi.UnknownHostException: Could not init server [T3://sanjay:7001/HelloServer]
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at com/ms/applet/AppletPanel.run
at java/lang/Thread.runUse the plugin for your browser that corresponds to the version of the JDK that the server is running, ie 1.2 plugin for 1.2 server.
jairag wrote:
Hi!
When I try this Hello example of weblogic in 4.5 I am getting the following error.
How to resolve this?
Very Urgent.
thanks in advance.
regards,
jai
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[Root exception is weblogic.rmi.UnmarshalException: Unmarshalling return
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[java.io.EOFException]]javax.naming.CommunicationException
at weblogic/jndi/toolkit/ExceptionTranslator.toNamingException
at weblogic/jndi/toolkit/ExceptionTranslator.toNamingException
at weblogic/jndi/WLInitialContextFactory.toNamingException
at weblogic/jndi/WLInitialContextFactory.newContext
at weblogic/jndi/WLInitialContextFactory.getInitialContext
at weblogic/jndi/Environment.getContext
at weblogic/jndi/Environment.getInitialContext
at weblogic/rmi/Naming.getContext
at weblogic/rmi/Naming.lookup
at HelloAppletLocal.init
at com/ms/applet/AppletPanel.securedCall0
at com/ms/applet/AppletPanel.securedCall
at com/ms/applet/AppletPanel.processSentEvent
at com/ms/applet/AppletPanel.processSentEvent
at com/ms/applet/AppletPanel.run
at java/lang/Thread.run
--------------- nested within: ------------------
weblogic.rmi.UnknownHostException: Could not init server [T3://sanjay:7001/HelloServer]
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[[Root exception is weblogic.rmi.UnmarshalException: Unmarshalling return
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[java.io.EOFException]]javax.naming.CommunicationException]
at weblogic/rmi/Naming.getContext
at weblogic/rmi/Naming.lookup
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at com/ms/applet/AppletPanel.securedCall0
at com/ms/applet/AppletPanel.securedCall
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at com/ms/applet/AppletPanel.processSentEvent
at com/ms/applet/AppletPanel.run
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Urgent help: how to create data source for Weblogic RMI driver
Hi,
Please let me how to create data source for Weblogic RMI driver using Administrator
console.
I understand that the following steps are required:
1.Create connection pool for the RMI driver by specfiying URL as
jdbc:weblogic:rmi and Driver as weblogic.jdbc.rmi.Driver. Now
comes the problem.. what do put in properties text area? I am
talking about key/value pairs required?
2. Having done step 1 ( which I was not able to do) , create a new DataSource
mapping to the connection pool created from step 1.
How to accomplish step 1 ? I want to finally connect to Oracle
database. Please help me.
pradeep bhatDataSource will internally do that for you (It will use RMI internaly) . You
dont have to worry about the details of using RMI driver. Thats what is a
DataSource is for.
sree
"pradeep bhat" <[email protected]> wrote in message
news:[email protected]...
Hi Sree,
What u have written is abt configuting Datasource for type 2 and
4 drivers.
But I want to know how to create data source for RMI driver. If
I map this datasource to connection pool that is created for
type 2 or 4 drivers, i don't understand why RMI drivers are
required in first place. If i do map the data source to connection pool
created
for type 2 or 4 drivers then where i
would not have used the URL as jdbc:weblogic:rmi and Driver as
weblogic.jdbc.rmi.Driver.
Hope u will help me.
pradeep bhat
"Sree Bodapati" <[email protected]> wrote:
Hi Pradeep
To create a connection pool you have to use a database driver not RMI
driver. So use a thin driver or the WebLogic jDriver for Oracle to setup
your connection pool. Once the connection pool is created you can create
a
DataSource and use this datasource to connect to the database.
The RMI driver can be used to get connections from the database via the
connection pool and in that case you dont need a datasource. Recommended
approach is to use a DataSource.
hth
sree
"PRADEEP BHAT" <[email protected]> wrote in message
news:[email protected]...
Hi,
Please let me how to create data source for Weblogic RMI driver using
Administrator
console.
I understand that the following steps are required:
1.Create connection pool for the RMI driver by specfiying URL as
jdbc:weblogic:rmi and Driver as weblogic.jdbc.rmi.Driver. Now
comes the problem.. what do put in properties text area? I am
talking about key/value pairs required?
2. Having done step 1 ( which I was not able to do) , create a new
DataSource
mapping to the connection pool created from step 1.
How to accomplish step 1 ? I want to finally connect to Oracle
database. Please help me.
pradeep bhat -
Hi
I've a few questions on WL RMI that I couldn't figure out from the
documentation.
Suppose I have a cluster containing Weblogic servers server1 and server2.
Server1 hosts an RMI object o1 that is bind to the cluster wide JNDI tree.
O1 implements remote interface i1 that has a method m1 which takes as an
argument an object o2 implementing remote interface i2. That is:
public class o1 implements i1 {...}
public interface i1 extends weblogic.rmi.Remote {
public void m1 (i2 _o2);
public class o2 implements i2 {...}
public interface i2 extends weblogic.rmi.Remote {...}
Now if inside server2 I create o2 using the default constructor, lookup a
reference to o1 and call method m1, will o2 get passed by value or by
reference? Is there any way to control this? What if I don't use the
constructor to create the object but the object is hosted in server2 and I
get a reference to the object using JNDI lookup? In short, how does WL RMI
decide when to pass an object by reference and when by value.
I'm trying to increase the scalability of a system by distributing its
modules as RMI objects to several machines running Weblogic server, and I
need to know the details on how WL RMI works. The documentation seems to be
rather inadequate...
Thanks for reading this far :)
- Juha
Actually, O2 will always be passed by reference because it is an RMI object
(i.e., it implements weblogic.rmi.Remote). If O2 were a non-RMI object, it would
be passed by value if O1 is in a different process and by reference if O1 and O2
are in the same process.
Edwin Marcial wrote:
> My 2 cents on this:
>
> I believe in this case, since O2 is a remote object, it will get passed by
> reference. If it were not a remote object, it would be passed by value.
>
> Edwin
>
> "Juha Lindström" wrote:
>
> > Hi
> >
> > I've a few questions on WL RMI that I couldn't figure out from the
> > documentation.
> > Suppose I have a cluster containing Weblogic servers server1 and server2.
> > Server1 hosts an RMI object o1 that is bind to the cluster wide JNDI tree.
> > O1 implements remote interface i1 that has a method m1 which takes as an
> > argument an object o2 implementing remote interface i2. That is:
> >
> > public class o1 implements i1 {...}
> >
> > public interface i1 extends weblogic.rmi.Remote {
> > public void m1 (i2 _o2);
> > }
> >
> > public class o2 implements i2 {...}
> >
> > public interface i2 extends weblogic.rmi.Remote {...}
> >
> > Now if inside server2 I create o2 using the default constructor, lookup a
> > reference to o1 and call method m1, will o2 get passed by value or by
> > reference? Is there any way to control this? What if I don't use the
> > constructor to create the object but the object is hosted in server2 and I
> > get a reference to the object using JNDI lookup? In short, how does WL RMI
> > decide when to pass an object by reference and when by value.
> >
> > I'm trying to increase the scalability of a system by distributing its
> > modules as RMI objects to several machines running Weblogic server, and I
> > need to know the details on how WL RMI works. The documentation seems to be
> > rather inadequate...
> >
> > Thanks for reading this far :)
> >
> > - Juha
-
Applet-Servlet or RMI - which is better
We are in the process of developing a swing-applet based system that requires regular interaction with multiple databases residing on more than one database server.
The options available before us, as we evaluate are:
a. Use "signed" applets ( as this is going to be essentially an intra-net application) and use JDBC connection to connect to more than one database ( which reside on servers other than the web server).
b. Use applet - servlet communication - basically, the servlet would establish connection to the databases, directly or through EJB, retrieve necessary database information and pass on the objects to the applet - the front end GUI would be controlled by the applet.
c. Use RMI
We would like to have your perspective of the three options, with your experience in this line.
The questions that come to us are:
a. If the system is essentially an intra-net application, is it okay to design with "signed" applet mechanism - how far is this method common in the market and acceptable to the clients? Is it true that the signed applet would be able to establish connection to various "identified servers" that are allowed permissions in the security file?
b. Between applet-servlet and RMI, which is a better method? What should be the factors that need to be considered? Is RMI being widely used or should we be thinking in terms of EJB, eventhough the current project is purely a Java based solution.
Your input is highly appreciated - thanking in advance for any suggestions and inputs that you may provide.
Thanks
DixieDixie,
1) IMHO signed applets are not widely used, but you can use
ordinary applets, which are accessing other resources through
redirector servlet on server side - I mean ordinary applets
are prohibited to establish connect to other than it's own server.
So you will be forced to have special servlet on your server,
which have access to other resources on other servers - this is a
way how to avoid applets limitation.
2) RMI is a heavy solution, because all parameters/objects should
be serialized over net and if network connection is unreliable
working with system will be just a nighmare.
3) If you think that your network connection is unreliable, you can use HTTP protocol between client and server instead of RMI. In this case
you will have following benefits:
i) You can still use all of powerness of thick client
ii) Network unreliability will be defeated
iii) Sometime if you would like to port your application to a thin
client it will be done much more easier than in case of RMI
4) If you would like to use thin client your only problem will
be poorness of UI - if you can go with it - go ahead! Otherwise
use thick client with RMI or HTTP depending on quality of network.
Paul -
I have a question about weblogic RMI , how can I resolve it.Thank you
I have a question about the weblogic RMI .
I have a program.web services+weblogic RMI +Data Sources When I run the program in the console application.it is ok.But When i run it with the web services(it 'is mean Get some parameter and run the different program).it's fail.The Exception is
cannot assign instance of yype weblogic.rmi.RMIServices_1033_WLStub to field demo.RMIServer_1033_WLStub.stubinfo of type weblogic.rmi.internal.StubInfo in instance of demo.RMIEsrver_1033_WLStub
how to resolve .Thank you.Hi Charles,
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I am trying to implement a basic RMI class, using the example in "Programming Weblogic RMI" book. I used java rmic instead of wls rmic.
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at java.security.AccessControlContext.checkPermission(AccessControlConte
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Please advise, what's going wrong here.I am trying to implement a basic RMI class, using the example in "Programming Weblogic RMI" book. I used java rmic instead of wls rmic.
The only difference from the book example is that I am tyring to bind remote object implementation from within a servlet GET/init. I am getting the following exception stack:
java.security.AccessControlException: access denied (java.io.FilePermission <path>\user_projects\domains\my_domain\servers\my_ms1\tmp\_WL_user\MyApp\6210pw\war\WEB-INF\lib\_wl_cls_gen.jar read)
at java.security.AccessControlContext.checkPermission(AccessControlConte
xt.java:323)
at java.security.AccessController.checkPermission(AccessController.java:
546)
I am not using a securitymanager explicitlty in my code, as adviced in the book.
Please advise, what's going wrong here. -
Java.lang.NoSuchMethodError: weblogic.rmi.extensions.WRMIOutputStream
Hi,
I'm trying to run examples.jdbc.datasource.simplesql with Weblogic 5.1sp8,
but am hitting this problem when it executes:
An exception was caught. javax.naming.NamingException [Root exception is
weblogic.rmi.ServerError: A Rem
oteException occurred in the server method
- with nested exception:
[java.lang.NoSuchMethodError: weblogic.rmi.extensions.WRMIOutputStream:
method writeObject(Ljava/lang/Ob
ject;)V not found]]
An exception was caught. java.lang.NullPointerException:
Any pointers would be appreciated.
Thanks,
-TrietHi..
I guess itzz more of the service pack problems.
Jars built on the later version won't work in the previous version (service packs) of weblogic.
Try building a jar on the oldest version (service pack) u have and then try deploying it to the later version , i think it won't give u any problems.
Try it out and let me know if u face any problems -
Weblogic.rmi.internal.LocalServerRefMissing
I am Attempting to serialize and deserialize a stateful session
bean. The deserialization seems to be the problem. I have
figured out that the line throwing the error is the "readObject"
line.
A similar problem was reported on Jan 31 2002, but the solution
suggested deals with the "getEJBObject" line. I have tryed to
implement this solution, as you can see below, but since the
error I am getting is thrown before getting to that line, it
makes no difference.
The Exception I am getting is an "InvalidClassException".
The message reads as follows = "weblogic.rmi.internal.
LocalServerRefMissing no-arg constructor for class".
As far as the "no-arg constructor" error goes, as I understand
it I should not be having that problem. My Session bean
implements the SessionBean interface and does not explicitly
extend anything, so by default it extends Object, right?!
Object has a no-args constructor, so there should be no problem.
My code is as follows:
---SERIALIZATION---
Handle msaHandle = contributions.getHandle();
ObjectOutputStream toFile = new ObjectOutputStream(
new FileOutputStream(handleFile));
toFile.writeObject(msaHandle);
toFile.close();
---DESERIALIZATION---
ObjectInputStream fromFile = new ObjectInputStream(
new FileInputStream(handleFile));
Handle msaHandle = (Handle) fromFile.readObject();
//MsaSession contributions =
(MsaSession) msaHandle.getEJBObject();
MsaSession contributions = (MsaSession) javax.rmi.PortableRemote
Object.narrow(msaHandle.getEJBObject(), MsaSession.class);
fromFile.close();
I have tried to print "classname" (available in the
InvalidClassException class), but only get null as the value.
Anyone have any ideas?
MatthewI am Attempting to serialize and deserialize a stateful session
bean. The deserialization seems to be the problem. I have
figured out that the line throwing the error is the "readObject"
line.
A similar problem was reported on Jan 31 2002, but the solution
suggested deals with the "getEJBObject" line. I have tryed to
implement this solution, as you can see below, but since the
error I am getting is thrown before getting to that line, it
makes no difference.
The Exception I am getting is an "InvalidClassException".
The message reads as follows = "weblogic.rmi.internal.
LocalServerRefMissing no-arg constructor for class".
As far as the "no-arg constructor" error goes, as I understand
it I should not be having that problem. My Session bean
implements the SessionBean interface and does not explicitly
extend anything, so by default it extends Object, right?!
Object has a no-args constructor, so there should be no problem.
My code is as follows:
---SERIALIZATION---
Handle msaHandle = contributions.getHandle();
ObjectOutputStream toFile = new ObjectOutputStream(
new FileOutputStream(handleFile));
toFile.writeObject(msaHandle);
toFile.close();
---DESERIALIZATION---
ObjectInputStream fromFile = new ObjectInputStream(
new FileInputStream(handleFile));
Handle msaHandle = (Handle) fromFile.readObject();
//MsaSession contributions =
(MsaSession) msaHandle.getEJBObject();
MsaSession contributions = (MsaSession) javax.rmi.PortableRemote
Object.narrow(msaHandle.getEJBObject(), MsaSession.class);
fromFile.close();
I have tried to print "classname" (available in the
InvalidClassException class), but only get null as the value.
Anyone have any ideas?
Matthew -
Error when trying to acess a remote bean ??(weblogic.rmi.UnmarshalException
hi,
i have a component (with weblogic 5.1) one one system (say A).
I have an application on other systen (say B) which must connect to that component and insert data in the database.
when i am trying to acces
i get this error...
Exception javax.naming.CommunicationException [Root exception is weblogic.rmi.UnmarshalException: Unmarshalling return
- with nested exception:
[java.lang.ClassNotFoundException: class com.fn.trading.TDorderVettingSessionEJBHomeImpl_ServiceStub previously not found]]
My Bean class Name is TDorderVettingSessionEJB.class in a package com.fn.trading..
when i am running the application on the same system A the code is working. but giving priblem when accessed with system B.
i tried to copy the bean class files in the system B also and kept in classpath..but still it did not work...
regards
sowjanyaSet property weblogic.system.enableUnsafeClassloading=true
-
Java.lang.ClassCastException: Cannot narrow remote object weblogic.rmi.inte
Hi,
I am trying to deploy ejb3.0 on weblogic 10 server. I am able to find the JNDI name of the stateless session bean correctly, but getting an exception while narrowing it down. My ejb3.0 client is a standalone java client. I am trying to access the stateless session ejb3.0 bean.Please help me. i have been trying it for many days.
thanks in advance,
Sanjeev
[sanpraka@localhost certEjb]$ java -cp ./:/usr/weblogic/bea/wlserver_10.0/server/lib/weblogic.jar:/usr/weblogic/bea/wlserver_10.0/server/lib/wlclient.jar com.titan.clients.Client
Object is weblogic.rmi.internal.BasicRemoteRef - hostID: '5337880647112897730S:127.0.0.1:[7001,7001,-1,-1,-1,-1,-1]:wl_server:examplesServer', oid: '302', channel: 'null'
java.lang.ClassCastException: Cannot narrow remote object weblogic.rmi.internal.BasicRemoteRef - hostID: '5337880647112897730S:127.0.0.1:[7001,7001,-1,-1,-1,-1,-1]:wl_server:examplesServer', oid: '302', channel: 'null' to com.titan.travelagent.TravelAgentRemote
at weblogic.corba.server.naming.ReferenceHelperImpl.narrow(ReferenceHelperImpl.java:206)
at weblogic.rmi.extensions.PortableRemoteObject.narrow(PortableRemoteObject.java:88)
at weblogic.iiop.PortableRemoteObjectDelegateImpl.narrow(PortableRemoteObjectDelegateImpl.java:32)
at javax.rmi.PortableRemoteObject.narrow(Unknown Source)
at com.titan.clients.Client.main(Client.java:24)
[sanpraka@localhost certEjb]$We have a similar problem. We have a web application (on server A) that invokes an EJB on a remote server (server B). This works fine, until we deploy another web application to server A at which point the existing web application starts to throw java.lang.ClassCastException when narrowing the remote EJB interface. The exception starts to be thrown at the moment the latter web application is deployed - start is not required.
The latter web application contains (actually in APP-INF/lib) the old version of the EJB remote interface, that somehow gets to be loaded into the classpath of the existing web application. The solution is to delete the old version of the EJB remote interface from APP-INF/lib of the latter web application (we didn't need it anyway), but it would be interesting to know in which circumstances classes can get mixed between enterprise applications.
I failed to reproduce the error in simple scenario, so this does not happen always. -
Failover when using weblogic rmi
does anyone that
if i keep some plain java objects in collections in a RMI server using
weblogic RMI.
will the java objects be available to me on the new server it fails over to?
iam using weblogic servber 6.0 sp 1
the collections hold plain old java objects(POJO)
Mridul PaliwalHi Giuseppe --
I would open a service request with Oracle support for this.
-steve- -
Getting :java.lang.ClassCastException: weblogic.rmi.internal.MethodDescript
Hi I am getting the following exception:
java.lang.ClassCastException: weblogic.rmi.internal.MethodDescriptor
at weblogic.rjvm.MsgAbbrevInputStream.readClassDescriptor(MsgAbbrevInputStream.java:186)
at weblogic.common.internal.ChunkedObjectInputStream$NestedObjectInputStream.readClassDescriptor(ChunkedObjectInputStream.java:300)
at java.io.ObjectInputStream.inputClassDescriptor(ObjectInputStream.java:901)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:361)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:231)
at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1181)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:381)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:231)
at weblogic.common.internal.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:110)
at weblogic.common.internal.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:123)
at weblogic.jndi.internal.RootNamingNode_WLSkel.invoke(Unknown Source)
at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:298)
at weblogic.rmi.cluster.ReplicaAwareServerRef.invoke(ReplicaAwareServerRef.java:93)
at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:267)
at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:22)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
can any body explain the Cause for this exception and what will be the impact on the server.
but if i restart the server the error is not comingHi I am getting the following exception:
java.lang.ClassCastException: weblogic.rmi.internal.MethodDescriptor
at weblogic.rjvm.MsgAbbrevInputStream.readClassDescriptor(MsgAbbrevInputStream.java:186)
at weblogic.common.internal.ChunkedObjectInputStream$NestedObjectInputStream.readClassDescriptor(ChunkedObjectInputStream.java:300)
at java.io.ObjectInputStream.inputClassDescriptor(ObjectInputStream.java:901)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:361)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:231)
at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1181)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:381)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:231)
at weblogic.common.internal.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:110)
at weblogic.common.internal.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:123)
at weblogic.jndi.internal.RootNamingNode_WLSkel.invoke(Unknown Source)
at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:298)
at weblogic.rmi.cluster.ReplicaAwareServerRef.invoke(ReplicaAwareServerRef.java:93)
at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:267)
at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:22)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
can any body explain the Cause for this exception and what will be the impact on the server.
but if i restart the server the error is not coming
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