Using dbms_alert in Jdeveloper

Hello!
I need check signal from OracleDatabase in my application on the JSP Page.
How I can using dbms_alert package for my JSP page?
Thanks.

Not specific for DBMS_ALERT but here are the basics from the JDBC developer guide:
http://download.oracle.com/docs/cd/B10501_01/java.920/a96654/basic.htm#1002489

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Hello
I'm not sure if I'm to stupid, but to say the truth I didn't found the clue how to share a BC4J Application between several develeopers. Maybe someone can give me a hint.
That's my situation:
Our team is going to develop a web application using BC4J and BC4J-JSP, nothing special I think.
But my problem is, that BC4J and especially the wizards refer to a lot of different files. Even simple changes often result in multiple files being changed in different parts of the project.
Creating a view link between view objects in two packages for example changes the view objects in both packages. Also the project (.jpr) file or several "BC4J.xcfg" files are changed very often.
So it is not easy to find parts of code from which I can say they are owned by one developer and others which are owned by another. Most often, if you have to merge the work of different developers, you have to edit the BC4J-XML-Files using an external editor. Or did someone find a better way? Please tell me!
So, what is the best way to share code between developers?
Should I partition the application by packages?
- advantage:
it allows a fine partitioning
- disadvantages:
it has the great danger that BC4J makes changes in other packages which will be overseen when merging.
Should I create a projects for each developer and distribute code between the projects using libraries?
- advantage: no unseen changes will happen, as the libraries are readonly.
- disadvantages: no view links between view objects in different projects (Libraries) are possible! Also a lot of "load errors" can occure when updating a library, which have to be manually corrected in the dependent projects.
Are source code management systems a real help in this problem or do they just "manage" the problem? I already tried SCM and PVCS but was not very happy with the way of working. As JDeveloper is not "really easy" to use with theese tools.
So I would like to get any hints how other developers are dealing with this problem. Are you using BC4J with JDeveloper 9i in a team? Please tell me how do it and how you have partitioned your application.
Thanks in advance
Frank Brandstetter

Hi,
I'm not sure whether my answer is good enough for you, but it might help.
First of all, you have to use JDev 9.0.3, because 9.0.2 has big problems with associations/view links between objects in different projects.
Creating a view link between view objects in two packages for example changes the view objects in both packages. Also the project (.jpr) file or several "BC4J.xcfg" files are changed very often.This is not completely true in 9.0.3, as you may choose not to create an accessor in the imported object (and usually you don't need it neither!). As for bc4j.xcfg, there is a trick: define a "standard" database connection name to use all over your project! This will prevent modifying these files all the time!
Should I create a projects for each developer and distribute code between the projects using libraries?
- advantage: no unseen changes will happen, as the libraries are readonly.
- disadvantages: no view links between view objects in different projects (Libraries) are possible! Also a lot of "load errors" can occure when updating a library, which have to be manually corrected in the dependent projects.I would say, projects for each application component, which by chance will be managed by a single developer at a time.
As for the disadvantages, in 9.0.3 you are able to properly create associations and links using read-only objects. Hopefully, the release version will solve some generation inconsistencies...
Concerning the errors that occur when modifying a library, this might be balanced by the relative independence of the components... If you are able to develop following the dependency tree, you will not meet the problem very often.
Are source code management systems a real help in this problem or do they just "manage" the problem? I already tried SCM and PVCS but was not very happy with the way of working. As JDeveloper is not "really easy" to use with theese tools.Indeed, I do not have a SCMS really able to manage merges in the BC4J XML files... We rather try not to arrive there!
So I would like to get any hints how other developers are dealing with this problem. Are you using BC4J with JDeveloper 9i in a team? Please tell me how do it and how you have partitioned your application.I really hope that my hints will help.
Regards,
Adrian

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I am very new to this JDeveloper & BPEl Process , please could some one help in ersolving my problem that is , how to upload a file in BPEL Console Using JSP in JDeveloper.

Hi,
ADF Faces provides you with the file upload component
http://download-uk.oracle.com/docs/html/B25947_01/web_complex006.htm#CEGCEDHF
http://download-uk.oracle.com/docs/html/B25947_01/appendixa007.htm#CHDEDCFA
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The main aim is first we need to upload a file in JSP , it has to go to BPEL Process & it has to read the file & write the respective file in return to JSP through BPEL Process. Please I am in Urgent need of the Query , please help me ASAP.
Send to me response Please.....................................

Hi,
I thin that you asked the same question before and I premember that I ointed you to the ADF BC developer guide and the SRDemo if your application uses JSF. For plain JSP - if you Google for: JSP and file upload then you find plenty of sources for JSP and Struts.
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BPEL
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Frank

Using DBMS_ALERT package

Hello,
I would like to use DBMS_ALERT package. I have read documentation about this package. It works correctly but I have noticed that sometime the pl/sql block (with dbms_alert) performed quick but sometimes it lasted too long. There is no traffic od the server. So my questions are followed:
a) what could be the reason that calling dbms_alert sometimes last too long?
b) how performance is affected
c) waiting session has active status. It is good idea to use shared server for this purpose?
Thanks

I have just now solved my problem with DBMS_ALERT :-). I described my problem badly.
My application using dbms_alert started wait when I issue statement dbms_alert.waitone (in another thread). The problem was that my database was misconfigured :-(. I have only one shared_server process and session with dbms_alert.waitone blocked this shared server and any other session cann't work for a while.
SASA
PS: The way of understanding is very twisting :-)

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Thanks for you help John!
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Ignore my previous post. I misread the question.
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<bean:write name="FrmBean" property="dataId"/>
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Best regards!

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Hi
thank you for reading my post
is there any tutorial that helps with using Hibernate with Jdeveloper?
specially the ant task stuff about schema generator and Hibernate annotation?
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Hi,
The previous problem is solved but now getting another error
500 Internal Server Error
javax.faces.FacesException: #{Catalog.commandButton_action}: javax.faces.el.EvaluationException: java.lang.NullPointerException
     at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:98)
     at javax.faces.component.UICommand.broadcast(UICommand.java:332)
     at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:287)
     at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:401)
     at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:95)
     at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:245)
     at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:110)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:213)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.1.0) ].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:711)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.1.0) ].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:368)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.1.0) ].server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:866)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.1.0) ].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:448)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.1.0) ].server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:216)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.1.0) ].server.http.HttpRequestHandler.run(HttpRequestHandler.java:117)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.1.0) ].server.http.HttpRequestHandler.run(HttpRequestHandler.java:110)
     at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
     at oracle.oc4j.network.ServerSocketAcceptHandler.procClientSocket(ServerSocketAcceptHandler.java:239)
     at oracle.oc4j.network.ServerSocketAcceptHandler.access$700(ServerSocketAcceptHandler.java:34)
     at oracle.oc4j.network.ServerSocketAcceptHandler$AcceptHandlerHorse.run(ServerSocketAcceptHandler.java:880)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.1.0) ].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
     at java.lang.Thread.run(Thread.java:595)
Caused by: javax.faces.el.EvaluationException: java.lang.NullPointerException
     at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:150)
     at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:92)
     ... 20 more
Caused by: java.lang.NullPointerException
     at hibernate.HibernateDB.getData(HibernateDB.java:168)
     at hibernate.Catalog.commandButton_action(Catalog.java:112)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:146)
     ... 21 more
Where line 168 is
result[0] = new String(""+catalog.getId());
please help.
Thanks

[ADF BC] error in using ajax4jsf with jdeveloper 10.1.3

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oracle.classloader.util.AnnotatedNoClassDefFoundError:
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Missing class: org.apache.commons.collections.map.LRUMap
The commons-collections.zip included with JDeveloper 10.1.3 does not include the LRUMap class.
Use the Apache Commons Collections commons-collections-3.2.zip.
http://commons.apache.org/downloads/download_collections.cgi

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hi
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Dennis ,
Thank you very much.
I have resolved that question according to your second option.
thank you again!
Good luck.
2 options, that I know of (windoze, right?):
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If you deploy it to a jar, and put the DLL in there, I'd think it would see it - but I haven't gotten THERE, yet! :-P
Later.
Dennis

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Hi,
My Question is how to create and deploy Web Services using Oracle 9i JDeveloper.Anybody please give me a detailed Reply.Please Reply to [email protected]
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Regards,
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