Unable to start appliaction server due to JAZN Exception

[kalpanadsr]

Hi

When the application server is being started using the
java -jar oc4j.jar, i am getting the following messages on the command console.

Can anyone help me in this, i am unable to understand wht went wrong. i havent changed any of the settings. earlier it was working fine.

thanks in advance

cheers
Kalpana

here are the exception messages -

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oracle.security.jazn.JAZNException: The system is unable to retreive the specified realm(s).
at oracle.security.jazn.spi.ldap.LDAPRealmManager.getrealms(LDAPRealmManager.java:856)
at oracle.security.jazn.spi.ldap.LDAPRealmManager.getRealm(LDAPRealmManager.java:145)
at oracle.security.jazn.oc4j.JAZNUserManager.initDefaultRealm(JAZNUserManager.java:295)
at oracle.security.jazn.oc4j.JAZNUserManager.init(JAZNUserManager.java:318)
at oracle.security.jazn.oc4j.JAZNUserManager.<init>(JAZNUserManager.java:128)
at com.evermind.server.XMLServerConfig.getUserManager(XMLServerConfig.java:103)
at com.evermind.server.Application.preInit(Application.java:403)
at com.evermind.server.Application.setConfig(Application.java:128)
at com.evermind.server.ApplicationServer.addApplication(ApplicationServer.java:1504)
at com.evermind.server.ApplicationServer.initializeApplications(ApplicationServer.java:1452)
at com.evermind.server.ApplicationServer.setConfig(ApplicationServer.java:1100)
at com.evermind.server.ApplicationServerLauncher.run(ApplicationServerLauncher.java:70)
at java.lang.Thread.run(Thread.java:484)
at com.evermind.util.ThreadPoolThread.run(ThreadPoolThread.java:49)
oracle.security.jazn.JAZNInitException: The system is unable to retreive the specified realm(s).
at oracle.security.jazn.oc4j.JAZNUserManager.<init>(JAZNUserManager.java:130)
at com.evermind.server.XMLServerConfig.getUserManager(XMLServerConfig.java:103)
at com.evermind.server.Application.preInit(Application.java:403)
at com.evermind.server.Application.setConfig(Application.java:128)
at com.evermind.server.ApplicationServer.addApplication(ApplicationServer.java:1504)
at com.evermind.server.ApplicationServer.initializeApplications(ApplicationServer.java:1452)
at com.evermind.server.ApplicationServer.setConfig(ApplicationServer.java:1100)
at com.evermind.server.ApplicationServerLauncher.run(ApplicationServerLauncher.java:70)
at java.lang.Thread.run(Thread.java:484)
at com.evermind.util.ThreadPoolThread.run(ThreadPoolThread.java:49)

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