Unable to check logfiles in Application Server Control

I use oc4j_extended with a seperate oc4j_home: java -jar "%OC4J_INSTAL%\oc4j.jar" -userThreads -verbosity 10 -config %OC4J_HOME%\config\server.xml
This means I had to change some paths in server.xml.
Now I am able to use ascontrol from my seperate home. The problem is that when I click on the link Logs, I get a NullPointerException:
java.lang.NullPointerException at oracle.sysman.ias.studio.logging.logviewer.LogFilesHelper.createLogFilesHGrid(LogFilesHelper.java:858) at oracle.sysman.ias.studio.logging.logviewer.LogFilesHelper.prepareData(LogFilesHelper.java:244) at oracle.sysman.ias.studio.util.AbstractController.prepareData(AbstractController.java:652) at oracle.sysman.emSDK.svlt.PageHandler.handleRequest(PageHandler.java:389) at oracle.sysman.emSDK.svlt.EMServlet.myDoGet(EMServlet.java:711) at oracle.sysman.emSDK.svlt.EMServlet.doGet(EMServlet.java:294) at javax.servlet.http.HttpServlet.service(HttpServlet.java:743) at javax.servlet.http.HttpServlet.service(HttpServlet.java:856) at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:61) at oracle.security.jazn.oc4j.JAZNFilter.doFilter(Unknown Source) at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:672) at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:378) at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:869) at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:288) at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:120) at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:294) at java.lang.Thread.run(Thread.java:536)
In my oc4j console window it says: 05/03/03 14:18:26 javax.management.MBeanException: Exception thrown in operation
discoverLogs
05/03/03 14:18:26 at oracle.oc4j.admin.jmx.ejb.MBeanServerEjbBean.invoke(M
BeanServerEjbBean.java:346)
05/03/03 14:18:26 at oracle.oc4j.admin.jmx.ejb.MBeanServerEjbBean.invoke(M
BeanServerEjbBean.java:309)
05/03/03 14:18:26 at MBeanServerEjbRemote_StatefulSessionBeanWrapper0$1.ru
n(MBeanServerEjbRemote_StatefulSessionBeanWrapper0.java:141)
05/03/03 14:18:26 at java.security.AccessController.doPrivileged(Native Me
thod) ... (etcetera)
This doesn't happen when I run oc4j and ascontrol from my installation directory. Does anyone know what the problem might be?
Marko.

Another question on this subject: why does OC4J use paths
like ../../home/jsp/lib/taglib/ and even
./../../j2ee/home/jsp/lib/taglib/ (both used to define
global.tag.libraries in server.xml), when in this case >../jsp/lib/taglib would be sufficient?Another good question at that.
The reason is that OC4J is distributed as both a standalone zip file, and as part of the broader OracleAS product.
In the standalone case, we typically have one instance -- ie home.
In the OracleAS case, you can and deploy applications to new instances. In this case, we use the same set of bits, but just different configuration files. So where you see references to paths such as ../../j2ee/home/ that allows the same config files to be utilized in both standalone and OracleAS environments, and lets us support home and other specific instances which get created.
../.. takes you back to the ORACLE_HOME directory.
cheers
-steve-

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Need Urget help
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Thanks a lot for the viewing but I just found the solution as posted in
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Emilio, note implies emagent core dumps. If that is the case emctl would (hopefully) not return status "ok".
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Oracle Enterprise Manager 10g Application Server Control 9.0.4.1.0
Copyright (c) 1996, 2004 Oracle Corporation. All rights reserved.
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Unable to check logfiles in Application Server Control

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