EJB call in infinet loop

Hi,
I am using Oracle 10g Application server with 64 bit JVM. Sometimes EJB call is falling down in infinet loop. Please help me.
Regds,
Balu

hi,
INFINITE LOOP AND OC4J ABORT WHEN DUPLICATE PK ENTERED IN THE CREATEPAGE.
AUTOMATIC PAGE FORWARD CONVERSION HANGS IN INFINITE LOOP.
INFINITE LOOP OF ADDING ATTRIBUTES VISITING ATTRIBUTE MAPPINGS PANEL
http://download-uk.oracle.com/docs/cd/B25016_07//doc/dl/release_notes/B16010_05/B16010_05.pdf

Similar Messages

EJB Store called in a loop

I am having a problem porting our application from weblogic5.1 (EJB1.1) to weblogic8.1 (EJB2.0)
My current problem is an ejbStore called in a loop during a finder method call of a BMP entity bean.
The outer session bean calls entity beans in a transaction context, session bean has a transaction attribute of 'required'. This method uses a BMP home interface to do a finder method call on one BMP Entity Beans. It then does a set for just one column in the first entity. Then it does a finder method call on the second BMP entity bean, as soon as we call finder method on second entity bean, ejbStore method of first entity bean is called . All the BMP entity bean methods have a 'required' transaction attribute.
On calling the second finder method Weblogic has decided that it needs to update the first BMP entity bean. I.e. it calls ejbStore on the bean. I'm not sure why it should feel the need to do this but it does. But logically speaking ejbStore method should be called when we commit the transaction. I am using Transaction begin() and commit() in the session bean. The problem is that it then calls ejbStore in a loop.
All the methods for these two BMP beans are 'required' transaction attributes.

No. But I have older versions of the program on the boot drive. I also have older versions of GB and QuickTime on there too. I don't want to get rid of them. The older stuff are in folders. I guess Apple will figuar out some way of denoteing one from the other.

How to call in a loop AdfCustomEven.queue to send data in pieces

Hi
I need to call in a loop AdfCustomEven.queue to send data in pieces to a managed bean in the server

You can try using an af:poll and call the queue from the pollListener
Timo

"Multicast" support for EJB-EJB calls to cluster

What I have to work with:
+ WebLogic Server 5.1 cluster
+ Stateless session EJBs
What I want to do:
+ Be able to know list of available servers in the cluster
and use this list to broadcast same information to all EJBs
with same name in cluster
+ I understand that the cluster-aware EJB stub has this list
when a client gets a home reference to the EJB Object
+ I have not seen any specific WebLogic API to get this list
either by accessing the cluster-aware JNDI table or the
cluster-aware EJB stub.
+ Othwerwise, I would then need to implement my own server
list manager to get this list. Such task should not be that difficult.
Why I want to do the above:
+ I would like to implement a EJB sendAll() method that will
send the same request to all EJBs of the same JNDI name in the cluster.
+ Please correct me if I am wrong but I have not seen anywhere
in the WebLogic 5.1 documentation regarding the automatic multicast
ability of broadcasting EJBs calls via EJB-to-EJB communication to a
cluster.
+ I understand that multicasting is only used internally, ie,
heartbeats.
Plus, I believe that RMI does not support multicasting.

I'd like to hear a bit more about what you are trying to do. (at a
higher level)
RMI / EJB is a point-to-point model. A client is making an RMI call to
a server. Granted, in our clustering solution, there may not be one
physical server, but the idea is to give the appearance of one big,
reliable server.
-- Rob
Ren Bitonio wrote:
>
What I have to work with:
+ WebLogic Server 5.1 cluster
+ Stateless session EJBs
What I want to do:
+ Be able to know list of available servers in the cluster
and use this list to broadcast same information to all EJBs
with same name in cluster
+ I understand that the cluster-aware EJB stub has this list
when a client gets a home reference to the EJB Object
+ I have not seen any specific WebLogic API to get this list
either by accessing the cluster-aware JNDI table or the
cluster-aware EJB stub.
+ Othwerwise, I would then need to implement my own server
list manager to get this list. Such task should not be that difficult.
Why I want to do the above:
+ I would like to implement a EJB sendAll() method that will
send the same request to all EJBs of the same JNDI name in the cluster.
+ Please correct me if I am wrong but I have not seen anywhere
in the WebLogic 5.1 documentation regarding the automatic multicast
ability of broadcasting EJBs calls via EJB-to-EJB communication to a
cluster.
+ I understand that multicasting is only used internally, ie,
heartbeats.
Plus, I believe that RMI does not support multicasting.--
Coming Soon: Building J2EE Applications & BEA WebLogic Server
by Michael Girdley, Rob Woollen, and Sandra Emerson
http://learnweblogic.com

Simplest way to restrict access to remote EJB calls

I'm using weblogic 10.3 and I'm new to security in weblogic. I was looking at the documentation at http://docs.oracle.com/cd/E13222_01/wls/docs103/ConsoleHelp/taskhelp/security/ManageSecurityForDD.html
but got a little overwhelmed by the many options on how to implement security. Plus, I am getting confused between JDNI security and EJB Layer security (they're not the same thing, right?)
Can someone explain what the simplest way would be to prevent an "unauthorized" client to make remote EJB calls? For example, I know of the ConnectionFilters that you can implement, which can prevent remote callers from making T3 or IIOP calls if they're not from an authorized IP, etc. This is a good start but ideally I would want to password protect the EJBs, and any EJB client would have to provide this username/password somehow. Or possibly use two-way SSL for t3? The client app would have to provide a certificate to prove that it's trusted.
To be clear, I don't think I need weblogic to handle any fine-grained access control. I just want to make sure that the client (e.g., a webapp) is a trusted one. Once the EJB container is satisfied that the client is trusted (preferably by user/pass) then the client is free to execute any EJB methods.
Thanks in advance.
Edited by: user10123426 on Mar 14, 2012 10:26 AM

I'm don't think you can do a posture check by MAC address. If you're using SSLVPN, and you're running Windows, you can do a Host Scan check for the following registry key:
HKLM\System\CurrentControlSet\Services\Tcpip\Parameters\Domain
Then set up a Pre-Login policy that goes Windows->Registry Check->Success->RegCheckOK
|->Fail->RegCheckFail
At this point you've just verified that you can read that key and the value is stored for later use. You're not making an allow/deny decision yet.
Then in your Dynamic Access policy you do a Policy check for Location=RegCheckFail, that says "Unable to read registry". The following DAP policy check looks for Location=RegCheckOK, and validates that the value is your AD domain.
Alternatively, you could put a NAC box (ISE or Clean Access) 'behind/after' the VPN box, so although anyone can connect only domain machines (and/or whatever other posture checks you want to make, e.g. Antivirus status) make it through to the rest of the network.

Webcenter content service call in a loop.

Can you please let me know how i will call a service in loop like 'workflow_approve'. When i call service in loop it thows exception, first document will approved but for other document it throws service exception 'document revision is not latest revision' but document is not having other document.
Please help me i am stuck on this problem for a long time.
Regards,
Deepak Parmar

Hi ,
Can you share the RIDC code which you are trying to use for this requirement ?
You can check for loop example from the following link : http://jonathanhult.com/blog/2013/07/delete-content-ridc/
Thanks,
Srinath

How to map sync EJB call to async JMS req/resp pair

Folks,
Basically, we have the situation our session bean synchronous
transactions map to asynchronous JMS transactions.
In other words, a session bean method call would have the
following implementation logic:
1. marshall params and send async JMS message.
2. wait around for a reply message to be ready
3. receive a reply JMS message, unmarshall response.
4. return.
The problem, clearly, is that we can't do step 2 in the EJB method itself for fear
of tying up threads.
This seems like a classic problem of mapping synchronous EJB calls to asynchronous
backends.
Any suggestions how to do this?
Thanks,
Jabir

I don't know if there are any great solutions, short of making everything
async
(even to the EJB client) which should be considered if possible. E.g., EJB
sends
JMS message and immediately returns. Then an MDB gets the JMS response,
and calls back the client. If you can't modify the client, maybe you can
write a
"proxy" service between the client and the EJB layer.
Otherwise you'll need to bump the number of threads, knowing that a certain
amount of them will be sleeping.
regards,
-Ade
"Jabir" <[email protected]> wrote in message
news:3d2d14aa$[email protected]..
>
Folks,
Basically, we have the situation our session bean synchronous
transactions map to asynchronous JMS transactions.
In other words, a session bean method call would have the
following implementation logic:
1. marshall params and send async JMS message.
2. wait around for a reply message to be ready
3. receive a reply JMS message, unmarshall response.
4. return.
The problem, clearly, is that we can't do step 2 in the EJB method itselffor fear
of tying up threads.
This seems like a classic problem of mapping synchronous EJB calls toasynchronous
backends.
Any suggestions how to do this?
Thanks,
Jabir

EJB call from one domain to another, authentication problem

Two Weblogic servers. WLS A and WLS B. Different domains. Trust relationship between the domains can't be established.
I have an EJB in WLS B and there is a Web Application deployed to WLS A. There are method-permission declarations in the EJB descriptor xml.
Step 1. User authenticates to Servlet in Web Application (WLS A). Authentication is done with Http Basic Authentication.
Step 2. Servlet makes a JNDI lookup to get a handle to the EJB. Handle can not be fetched with the authentication information which was provided by user to servlet. This means that I need to specify a different username and password, which should be used for authentication at WLS B.
Step 3. After getting a handle to the EJB Servlet calls a method of the EJB.
Everything seems extremely simple. And it should be. But no.
At step 2 servlet propagates authentication information from WLS A to WLS B. This authentication information is valid only inside WLS A, not in WLS B. Result: SecurityException: Invalid Subject.
Setting SECURITY_PRINCIPAL and SECURITY_CREDENTIALS to InitialContext while creating it still results in propagation of authentication information. Same exception.
So I tried something else.
Tthe code doing the JNDI lookups and EJB calls was wrapped inside Security.runAs(new Subject(), ....) -block. Authentication information is no longer propagated to WLS B. So JNDI lookup succeeds, excellent!
But we only got one step further. Now we still need to make the call to EJB method at step 3.
Now that EJB method call results in Security Violation: User: <anonymous> has insufficient permission to access my method.
It's a bit strange, because username and password (for WLS B) were provided for InitialContext while creating it. If the password is invalid, the InitialContext can't be created. So it seems that atleast the username and password ARE checked at WLS B.
Any help and/or suggestions would be highly appreciated.
Here is a misc list of some misc wondering:
-Step 2. Should we make the JNDI lookup to JNDI tree of WLS A instead of WLS B. If we do so, then we should use ejb-ref's at web.xml. This was also quickly tested with no results.
-Would run-as-identity (or some similar element) help? Maybe we could set up some Credential Mapper to WLS A, which would provide username/password when making calls to EJB's of WLS B. Documentation about Credential Mappers seems to be quite useless.

There was a time, and it was quite some time ago when something similar was tried and it didn't meet with much success. Sure, it may not have been Domain files, it may have been something more like, say, rocks, but the general principle still applies. If you look at the XML and media parts that make up a Domain file, you can think of those pieces as analogous to the atoms in your average run-of-the-mill rock. Though the atoms in two given average run-of-the-mill rocks may seem quite similar, and cracking them open reveals innards that are almost entirely, but not quite, the same, it's still quite difficult to make one whole rock out of the two.
Now, some say alchemists might be able to accomplish this quite daunting task, but, until a study of use for Domain files (perhaps XMLchemy?) is initiated and studied most earnestly, we shall probably remain unable to bring about the union of one Domain file and another. Or were we talking about the rocks? (You can't melt Domain files, can you? The thought just hit me is all...)
How's that for a long answer?

ADF 11, USING EJB, CALL STORE PROCEDURE, A PROBLEAM?

ADF 11, USING EJB, CALL STORE PROCEDURE, A PROBLEAM?
I have a store procedure:
CREATE OR REPLACE PACKAGE BODY PK_HR1
IS
FUNCTION FUNC04
RETURN CUR_RESULT
IS
X_CUR CUR_RESULT;
BEGIN
OPEN X_CUR FOR
select mako, tenko, diachiko from kho;
RETURN X_CUR;
EXCEPTION
WHEN OTHERS THEN
RAISE;
END FUNC04;
END PK_HR1;
In the entities class, I have a NamedStoredProcedureQuery:
@Entity
@NamedStoredProcedureQuery(name="Kho.FUNC04",
          resultClass=Kho.class,
          procedureName="PK_HR1.FUNC04" )
public class Kho implements Serializable {
In session bean, i have a method
public class SessionEJBBean implements SessionEJB, SessionEJBLocal
public void test() throws Exception{
try {
//code here ...
List<Kho> listKho = em.createNamedQuery("Kho.FUNC04").getResultList();
System.out.println("aaaa");
} catch (Exception ex) {
ex.printStackTrace();
} finally {
I try running, but always show errror
this errors:
Internal Exception: java.sql.SQLException: ORA-06550: line 1, column 7:
PLS-00221: 'FUNC04' is not a procedure or is undefined
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
Error Code: 6550
Call: BEGIN PK_HR1.FUNC04(); END;
Query: ReadAllQuery(jp.co.mfr.sgs.bean.Kho)
help help me?

You need to use a CallableStatement for this.
--olaf

[svn:osmf:] 17980: Fix FM-1092: Calling stop when loop is true breaks looping.

Revision: 17980
Revision: 17980
Author:   [email protected]
Date:     2010-09-30 17:42:23 -0700 (Thu, 30 Sep 2010)
Log Message:
Fix FM-1092: Calling stop when loop is true breaks looping.
Ticket Links:
    http://bugs.adobe.com/jira/browse/FM-1092
Modified Paths:
    osmf/trunk/framework/OSMF/org/osmf/media/MediaPlayer.as

Hi Experts,
After i tried a few times, i can successfully start prepare with upgrade asistant monitor - Administrator >> Start Prepare,
Thanks

Error when One EJB calls anothe EJB

Hi,
I got the following error when I use one EJB call another EJB in OAS 4.0.8.1, the code is developed in JDeveloper 3.0/Win NT 4.0/SP5.
Can anyone give me some ideas? or is there any samples in this case?
Thanks a lot!
Creating an initial context
Looking for the EJB published as 'APP/APPEJB'
Creating a new EJB instance
Calling APPEJB methods...
CORBA: org.omg.CORBA.BAD_OPERATION: ; nested exception is:
org.omg.CORBA.BAD_OPERATION:
java.rmi.ServerException: CORBA: org.omg.CORBA.BAD_OPERATION: ; nested exception is:
org.omg.CORBA.BAD_OPERATION:
at javax.rmi.oas.corba.CorbaRemoteExceptionHelperValue.OBVObjFrom(Compiled Code)
at TwoEJB._stub_APPEJB.callEJBMapping(Compiled Code)
at TwoEJB.TwoEJBClient.main(Compiled Code)
null

Home handle is an object that identifies an enterprise bean. A client may serialize the handle, and then later deserialize it to obtain a reference to the enterprise bean.
The javax.ejb.HomeHandle is similar to javax.ejb.Handle. Just as the Handle is used to store and retrieve reference to EJB objects, the HomeHandle is used to store and retrieve remote references to EJB homes. HomeHandle can be stored and later used to access an EJB home remote refrence the same way that a Handle can be serialized and later used to access an EJB object's remoe reference.
import java.io.*;
import javax.ejb.EJBHome;
import javax.ejb.HomeHandle;
public class WorkingWithEJBHandles {
public static void main( String[] args ) throws Exception {
EJBHome aHome = null;
// get hold of a home interface
HomeHandle handle = aHome.getHomeHandle();
ByteArrayOutputStream bos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream( bos );
oos.writeObject( handle );
byte[] handleAsBytes = bos.toByteArray();
// store in the database, on file. howwever you want
FileInputStream fis = new FileInputStream( "fileobj" );
ObjectInputStream ois = new ObjectInputStream( fis );
HomeHandle theHandle = (HomeHandle) ois.readObject();
// get back the EJBHome from the HomeHandle
aHome = theHandle.getEJBHome();
// the same kind of logic also holds for EJBHandles, as well as
// HomeHandles
Transfer Object is a Design pattern. Refer to Core J2EE Design Pattern.
http://java.sun.com/blueprints/corej2eepatterns/Patterns/TransferObject.html
Rgds,
Seetesh

EJB calls in clustered environment with load balancers

Hi,
I am using WebSphere 6.1 (WAS) as my AppServer.
Lets say I have two nodes, node A and node B, as my APPSERV nodes in a cluster.
From a shell script, present on a node (lets say node A), I am invoking a business method in my EJB (lets say Bean.methodToBeCalled()) using the connection as "localhost", as my requirement is that through this call, I need to have the EJB call to node A only, i.e. only the bean on the current node should get invoked. Not the bean on node B.
However, I am not getting the expected result as the call is randomly getting directed to either node A or node B depending on the load balancer logic implemented by WAS.
I referred to the link which explained how EJB clustering works in WAS.
Is there some way I can achieve the desired result?
Thanks.

Do you have an entry in the table for the corresponding primary key in the Staging database?
Thanks
Seshi

Bytes taken for a EJB call

Folks -- I looked around for a while but did not find any thing convincing. So if some one can help me here it would be great.
For example when the client makes an EJB call like
this
String getXXX(String yyy) on a RemoteIF -- Many bytes are send back and forth for this call?
Also if some one can point me as to how many bytes does each of the Wrapper version of the primitives take for Remote calls!
For example String, Integer, Long -- individually.
It would really be awesome to get a quick response ;)
Thanks, vk

I'm quite sure the original poster meant the overhead involved with the process of making the call, not the size of some object being transferred either as parameter or as a return value.
I have a feeling it might be rather appserver dependent since it generates the stub/skeleton objects. Overhead for making just the RMI call (disregarding everything else) should be constant, though I don't know what it is.

BMP EJB Load and Store is calling only one time calling in a loop

Loop Iterating two times but ejb load and store is calling only one time.
Application deployed in 0c4j 10.1.2.0.0 container.

This sounds more like a Teststand quesstion. You might want to post it there.
Mike...
Certified Professional Instructor
Certified LabVIEW Architect
LabVIEW Champion
"... after all, He's not a tame lion..."
Be thinking ahead and mark your dance card for NI Week 2015 now: TS 6139 - Object Oriented First Steps

Function module called within a loop seems to carry over global data

Hello all,
I am calling FM "RS_COVERPAGE_SELECTIONS" inside of a loop of all variants for a program and then writing the variant values to spool. If only one variant is entered on the selection screen, all the values are correct. If nothing is entered, some of the variant values are carried over from a previous variant. I am emptying the internal table returned by the FM every time before the FM executes.
Would some one be willing to run the following code for a program with many screen fields and many variants and tell me if they get the same behavior?
Thanks
Bruce
REPORT zzzz.
tables: varid, varit.
parameters:     p_pgm type progname obligatory default 'ZFAPI004'.
select-options: s_var for varid-variant.
parameters: p_varval as checkbox default 'X'.
data: begin of reptab occurs 0,
        report like varid-report,
        variant like varid-variant,
        ename like varid-ename,
        edat like varid-edat,
        etime like varid-etime,
        aename like varid-aename,
        aedat like varid-aedat,
        aetime like varid-aetime,
        vtext like varit-vtext,
      end of reptab.
data: begin of tab_sel_options occurs 0,
                        flag(1) type c,
                        olength type x,
                        line like rsvar-infoline,
                      end of tab_sel_options.
*>> At Selection-Screen data items <<
data: w_pgm like sy-repid.
data: itab like rseui_f4 occurs 0 with header line.
data: dyname like d020s-prog value sy-repid,
        dynumb like d020s-dnum value '1000'.
data: begin of dynpfields occurs 3.
        include structure dynpread.
data: end of dynpfields.
data: w_tabix    like sy-tabix.
data: begin of i_var occurs 0,
          variant like varit-variant,
          vtext   like varit-vtext.
data: end of i_var.
start-of-selection.
format intensified on.
write: / p_pgm.
select * from varid
    where report = p_pgm
      and variant in s_var.
    select single * from varit
      where langu = 'E' and report = p_pgm
        and variant = varid-variant.
    move-corresponding varid to reptab.
    move-corresponding varit to reptab.
    append reptab.
endselect.
sort reptab by variant.
skip 1.
format color col_heading.
write: /03 'Variant',
          18 'Create',
          47 'Modify',
          76 'Description'.
format color off.
skip 2.
loop at reptab.
    format color col_total.
    write: /3 reptab-variant,
             reptab-ename(8),
             reptab-edat,
             reptab-etime,
             reptab-aename(8),
             reptab-aedat,
             reptab-aetime,
             reptab-vtext.
    format color off.
    skip 1.
    if p_varval = 'X'.
      clear   tab_sel_options.     " header
      refresh tab_sel_options.     " lines
      call function 'RS_COVERPAGE_SELECTIONS'
        exporting
          report            = reptab-report
          variant           = reptab-variant
          no_import         = ' '
        tables
          infotab           = tab_sel_options
        exceptions
          error_message     = 1
          variant_not_found = 2
          others            = 3.
      loop at tab_sel_options.
        if sy-tabix < 7.
          continue.
        endif.
        write: / tab_sel_options-line.
      endloop.
      skip 1.
    endif. " p_varval = 'X'.
endloop.

Hi
Try using the function module PRINT_SELECTIONS, within this FM, the FM RS_COVERPAGE_SELECTIONS is being called. So it will not copy the previous values.
Pass Mode as 'A' , report name and variant name, then it will display the same output.
Please try it
Shiva

EJB call in infinet loop

Similar Messages

Maybe you are looking for