OC4J freezes after uploading a class or jsp file

We've been having a problem with OC4J locking up after a jsp or class file has been uploaded to the server. We configured the development mode to true and it seemed to work inconsistently in reloading java beans. Does anybody know what I can do about this problem? We have to constanly bounce OC4J to get it going again or reloading the new class files.
Thanks

OC4J just stopped serving pages altogether when it happened. How can I tell if it's a OutOfMemory problem? We're running OC4J 1.0221 with JDK 1.2208. I'll try to increase memory size and see if that helps.
Thanks

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news:[email protected]..
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Hi,
But after writing the following code i have got following error? What's the problem of this code? please help me?
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<%@ page import="org.apache.commons.fileupload.*" %>
<%@ page import ="java.util.*" %>
<%@ page import ="java.io.*" %>
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<body>
<%
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List items = upload.parseRequest(request);
Iterator iter = items.iterator();
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//ring name= request.getParameter("")
%>
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<%
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%>
<%
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%>
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</html>Error is:
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 13 in the jsp file: /uploadfileC.jsp
Generated servlet error:
FileUpload cannot be resolved
An error occurred at line: 13 in the jsp file: /uploadfileC.jsp
Generated servlet error:
DiskFileUpload cannot be resolved to a type
An error occurred at line: 13 in the jsp file: /uploadfileC.jsp
Generated servlet error:
DiskFileUpload cannot be resolved to a type
An error occurred at line: 13 in the jsp file: /uploadfileC.jsp
Generated servlet error:
FileItem cannot be resolved to a type
An error occurred at line: 13 in the jsp file: /uploadfileC.jsp
Generated servlet error:
FileItem cannot be resolved to a type
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org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 13 in the jsp file: /uploadfileC.jsp
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An error occurred at line: 13 in the jsp file: /uploadfileC.jsp
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An error occurred at line: 13 in the jsp file: /uploadfileC.jsp
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FileItem cannot be resolved to a type
An error occurred at line: 13 in the jsp file: /uploadfileC.jsp
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I try to explain as best as possible.
I have an application running OK in OC4J. In this application I have a simple JSP that contains very little java code, like this:
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When I delete the precompiled JSP from persistence/_pages for force .java generation and re-compilation, OC4J generate .java correctly and launch a javac.exe process for compile the servlet .java. This compilation through javac.exe don't finish, remain permanent running and the compilation of JSP does not finish.
The web application remain sleep while javac.exe process perform ghost operations. Finally (after 5 minuts aprox.) the OC4J stop waiting and show blank page.
The javac.exe remains alive in Operating System.
*(strange) Cause:*
I know the cause but I find no explanation :-(...
The cause is the import of com.mySite.LoginBussines. This class is correctly (compiled by Eclipse and Ant) and run OK when is called from a servlet or another class running in OC4J. But when this class is imported in a JSP, the javac go crazy and remain try to compile permanently...
*(very strange) Workaround:*
When I delete any code line of this class (one or more, no matter), arbitrary line of any method in this Class, recompile class and try again, it's work fine!
NOTE: the size of LoginBussines.class it's around 66.897 bytes. I don't know if it's relevant.
Please, someone know what's going on? Someone has encountered this problem?
Thank you so much!
Edited by: 890752 on 11-oct-2011 4:40
Edited by: 890752 on 11-oct-2011 6:08

Robert,
It appears that you have only installed the Java Runtime Environment (JRE). You need to install the Software Development Kit (SDK). Get version 1.4.2_05, since this is what your version of OC4J requires. Go to the following Web page
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pls help....Take the advice to download and review Jakarta Commons FileUpload. Inform your management that their requirement makes no technical sense. Research on your own. There are dozens of examples (and tutorials) on file upload using multi-part. Embrace it. Live it. Love it.
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OC4J freezes after uploading a class or jsp file

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