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JSP NullPointerException in the next morning

Thomas Samimuthu
Greenhorn

Joined: Aug 07, 2001
Posts: 8
Hi,
I am using JRun the problem is when i access a particular JSP page in the next morning i am getting NullPointerException if i put the code again or restart the JRun then it works well, again in the next morning when i access the page i am getting NullPointerException what would be the prob.
Thanks in Advance.
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Valan


Thomas
Beksy Kurian
Ranch Hand

Joined: Jul 11, 2001
Posts: 254
Is the database going down for backups every night. If yes, you need to set up a job to restart the jrun after the database comes back up. I had the same problem too.
Beksy
Thomas Samimuthu
Greenhorn

Joined: Aug 07, 2001
Posts: 8
Besky,
Thanks, that is a good thought , no we are not doing any backup right now, other pages which access the databse are working fine
but one thing i over-ride the session creation in that jsp page
i set session=false in the "page" attribute and i create
the session object by myself like
HttpSession session = request.getSession(true)
is that any problem with session object???
or is there any objects created in the jspinit() method get carbage collected after some times???

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Valan
Subbu Aswathanarayan
Ranch Hand

Joined: Jun 22, 2001
Posts: 73
hi thomas,
u should not set session=false in ur jsp page.doing this means that no further sessions will be created, even if u try to .try removing that statement from ur jsp page and try again.i think it will work.
Subbu


Subbu
William Brogden
Author and all-around good cowpoke
Rancher

Joined: Mar 22, 2000
Posts: 12675
    
    5
You don't say exactly where the NullPointerException is coming from, I should think that would be the first thing to investigate. You should be dumping a StackTrace for that exception - either have an errorPage designated for your JSP or try-catch blocks for the code.
Bill

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Java Resources at www.wbrogden.com
Thomas Samimuthu
Greenhorn

Joined: Aug 07, 2001
Posts: 8
Hi This the stack dump i am getting:
null
java.lang.NullPointerException
at jrun__calendar2ejspd._jspService(jrun__calendar2ejspd.java:447)
at allaire.jrun.jsp.HttpJSPServlet.service(HttpJSPServlet.java:40)
at allaire.jrun.servlet.JRunServletPool.service(JRunServletPool.java:92)
at allaire.jrun.servlet.JRunSE.service(JRunSE.java:1013)
at allaire.jrun.servlet.JRunSE.runServlet(JRunSE.java:925)
at allaire.jrun.servlet.JRunNamedDispatcher.forward(JRunNamedDispatcher.java:34)
at allaire.jrun.jsp.JSPServlet.service(JSPServlet.java:175)
at allaire.jrun.servlet.JRunSE.service(JRunSE.java:1013)
at allaire.jrun.servlet.JRunSE.runServlet(JRunSE.java:925)
at allaire.jrun.servlet.JRunRequestDispatcher.forward(JRunRequestDispatcher.java:88)
at allaire.jrun.servlet.JRunSE.service(JRunSE.java:1131)
at allaire.jrun.servlet.JvmContext.dispatch(JvmContext.java:330)
at allaire.jrun.jrpp.ProxyEndpoint.run(ProxyEndpoint.java:382)
at allaire.jrun.ThreadPool.run(ThreadPool.java:272)
at allaire.jrun.WorkerThread.run(WorkerThread.java:75)

-Thanks
 
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