How to load objects in web application context during oc4j startup?

Hi
How I can put some objects in application context during oc4j application startup?
I'm using oracle as10g j2ee and web cache edition.
Thanks

An idea would be to write your own OC4JStartup implementing class and have this thing create the objects you want and bind them to JNDI.

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How to view logs of web application deployed in oc4j

Hi,
I have my oc4j server running, I have deployed a web application under instance DCG.
Please let us know, where can I find the logs of my application.
Thanks,
Nagesh.

Usually while deploying a application through "Oracle Enterprise Manager 10g Application Server Control" we specify the log and configuration path needed for developed application provided developer has developed the application to store the logs. by default all logs will be there in opmn logs.
you can have a look on following locations
+$ORACLE_HOME/opmn/logs/DCG~OC4J* <OC4J name>+
or
+$ORACLE_HOME/j2ee/<OC4J>/log/<OC4J>/oc4j/log.xml+
Hv a good day!
Edited by: KuldeepSingh on 16-Jan-2012 19:40

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I need to define JAXP Parsers and Transformer in a Web Application Context where I can deploy this application in any J2EE Application Server without modifying the server. That means that I can't set System properties or set the jaxp.properties file. I tried to use the META-INF/services/javax.xml.transform.TransformerFactory file but it didn't work.
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I need to define JAXP Parsers and Transformer in a Web Application Context where I can deploy this application in any J2EE Application Server without modifying the server. That means that I can't set System properties or set the jaxp.properties file. I tried to use the META-INF/services/javax.xml.transform.TransformerFactory file but it didn't work.
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Character encoding across Web application contexts

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a. EUC-JP
EUC is Extended Unix Code.
<META HTTP-EQUIV="Content-Type" CONTENT="text/html;
charset=x-euc-jp">x-euc-jp should be EUC-JP. You use x- for non-registered
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b. JIS
Japanese Industrial Standard
<META HTTP-EQUIV="Content-Type" CONTENT="text/html;
charset=iso-2022-jp">To be precise, JIS means nothing. JIS has many standards.
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c. Shift_JIS
Microsoft's Japanese encoding method loosly based on
JIS.
<META HTTP-EQUIV="Content-Type" CONTENT="text/html;
charset=x-sjis">Use "charset=Shift_JIS" in most cases.
>
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- Which one of the above 4 I should use? Either one is fine as long as you include the meta tag
in HTML. If you want to support older generation of
browsers, then skip UTF-8. If you target i-mode
phone browser, use Shift_JIS.
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How to create different log files for each of web applications deployed in OC4J

Hi All,
I am using OC4J(from Oracle) v1.0.2.2 and Windows2000. Now I want to know
1. how to create different log files for each of my deployed web applications ?
2. what are the advantages in running multiple instances of oc4j and in what case we should run
multiple instances of OC4J ?
3. how to run OC4J as Windows2000 Service rather than Windows2000 Application ?
Thanks and Regards,
Kumar.

Hi Avi,
First of all I have given a first reading to log4j and I think there will some more easy way of logging debugging messages than log4j (If you could provide me a detailed explanation of a servlet,jsp,java bean that uses log4j and how to use log4j then it will be very helpful for me). The other easy ways (if I am not using log4j) to my problem i.e creating different log files for each of web applications deployed in oc4j are
I have created multiple instances of OC4J that are configured to run on different ports and so on each instance I have deployed a single web application . And I started the 2 oc4j instances by transferring thier error/log messages to a file. And the other way is ..
I have download from jakarta site a package called servhelper . This servhelper is a thread that is started in a startup servlet and stopped in the destroy method of that startup servlet. So this thread will automatically capture all the system.out.println's and will print those to a file. I believe that this thread program is synchronized. So in this method I need not run multiple instances of OC4J instead each deployed web application on single instance of oc4j uses the same thread program (ofcourse a copy of thread program is put in each of the deployed web applications directories) to log messages on to different log files.
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Thanks and Regards,
Ravi.

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Hi All,
I am installing a patch(13925741) for Calculation Manager, i stuck at the following point:
6. Perform the standard Calculation Manager Web application server deployment task using Hyperion Enterprise Performance Management System Configurator (EPM System Configurator). See the Oracle Hyperion Enterprise Performance Management System Installation and Configuration Guide for instructions.
I don't know how to redeploy Calculation Manager Web Application Server, plz help me in deploying this.
The readme for the patch can be found at:
https://updates.oracle.com/Orion/Services/download?type=readme&aru=15356919#_Toc330987031

909062 wrote:
Hi All,
I am installing a patch(13925741) for Calculation Manager, i stuck at the following point:
6. Perform the standard Calculation Manager Web application server deployment task using Hyperion Enterprise Performance Management System Configurator (EPM System Configurator). See the Oracle Hyperion Enterprise Performance Management System Installation and Configuration Guide for instructions.
I don't know how to redeploy Calculation Manager Web Application Server, plz help me in deploying this.
The readme for the patch can be found at:
https://updates.oracle.com/Orion/Services/download?type=readme&aru=15356919#_Toc330987031
Hi,
Did you actually try to look at the Oracle Hyperion Enterprise Performance Management System Installation and Configuration Guide for instructions as suggested ?
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Thanks,
JM

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getContextPath() in javax.servlet.http.HttpServletRequest

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Hi
Thank you for reading my post
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Thank you
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<web-app xmlns="http://java.sun.com/xml/ns/javaee"
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Any help is appreciated.
Thanks.
---Sujoy

Thanks...
It solved the problem by putting <form action="Process_Registration"> instead of <form action="/Process_Registration">When I was using <form action="/Process_Registration"> it was directly taking me to
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But, now when i use <form action="Process_Registration"> it takes me to
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--Sujoy

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Hi,
I have been trying to find out if there is a defined order in which classes contained in WEB-INF/classes
and/or WEB-INF/lib should be loaded.
There doesn't appear to be any mention of class loading order in either the J2EE 1.3 or J2EE 1.4
specifications. That does not mean that there isn't a defined class load order, it just means I haven't found one.
Typical behaviour from servers such as Tomcat (reference implementation of the Servlet Engine) show
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Because there doesn't appear to be a mandated class load order I cannot assume that the same
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Thanks

If you say that it is server specific i don't find
that to be the correct answer b'cozI didn't give an answer, I am looking for one. I gave an example of the behaviour that Tomcat 4.1.x
exhibits, one that we currently make use of for patching web applications. My question was about
whether or not this behaviour can be relied upon.
the class files are depended on the jar files which
need to checked in first before getting loaded b'coz
it should check for dependent files before only while
getting deployed.This is why the class load order is important.
Is the Web Application Classloader going to look in WEB-INF/classes first every time followed
by WEB-INF/lib everytime, is the order undefined, or is it reversed?
More over if you just think of class loading mechanism
of classes folder only then it is loaded in the order
specified in the web.xml file.
in this we specify the order of loading.As far as I know web.xml does not allow you to specify where classes should be loaded from and in
which classpath order, you define which classes should be used for application components.
The only load order you can specify is the load order of servlets on startup.
If you know different I would love to know how you would configure web.xml to specify the classpath order
in which classes are loaded.

How change information between two Web Applications?

Hi,
Has anyone any code sample or article how to build
a "bridge" that would change data stored into session and servletcontext
between two separete web application in same servlet engine?
What I have understood is that they can not normally share same
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Thanks,

Hmm...
Text in this Sun's tutorial says:
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How to do this, it's the problem.

How to access deployed J2EE Web application ?

Hi,
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I am not sure how to access this deployed application and thus this servlet.
I tried to access the following way :
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In the web.xml file, in the servlet-mapping section, I have mentioned the servletname and urlpattern.
I have mentioned the urlpattern as MyServlet and not /MyServlet. Notice the 'backslash'.
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Regards,
Subramanian V.

Hi
See this Thread
Re: servlet ----->url association ?
Re: Servlet not getting loaded when put in a jar file
Re: I just want to run a simple servlet. No EJBs, no Web DynPro...
/message/610344#610344 [original link is broken]
Kind Regards
Mukesh

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I am using Tomcat's default location to place my servlets.
"E:\Program Files\Apache Group\Tomcat 4.1\webapps\ROOT"
But day by day my classes are increasing. Now i am feeling to have my own location to place my servlets.
Ex. "E:\myservlets"
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Thanks in advance.

hi,
you can place your own application in any where
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add
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How do you get the web application path from the servlet?

I have created a web application which is installed in
/webapps/myApplication
/webapps/myApplication/data/users.xml
/webapps/myApplication/WEB-INF/classes/myServlet
How can you get the path to the "users.xml" file from the "myServlet" file?
The code below doen's seem to return the xml file. anybody knows why?
public class myServlet extends HttpServlet {
public void doGet( HttpServletRequest req, HttpServletResponse res ) throws ServletException, IOException
File myXmlFile = new File("/data/users.xml");

Try this..
String FileName = getServletContext().getRealPath("\\data\\users.xml");
File myXmlFile = new File(FileName);
hope this helps..

How to load objects in web application context during oc4j startup?

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