Issue Summary

Error while starting Weblogci Admin Server

Error Message

Unable To Start Admin Server due to java.lang.ClassCastException: com.octetstring.vde.backend.BackendRoot cannot be cast to com.octetstring.vde.backend.standard.BackendStandard

java.lang.ClassCastException: com.octetstring.vde.backend.BackendRoot cannot be cas t to com.octetstring.vde.backend.standard.BackendStandard. This may indicate a p roblem with the data files for the Embedded LDAP Server. If the problem is with the data files and it can not be corrected, backups of previous versions of the data files exist in /myDomain/servers/AdminServer/data/ldap/backup.>

There are 1 nested errors:

java.lang.ClassCastException: com.octetstring.vde.backend.BackendRoot cannot be cast to com.octetstring.vde.backend.standard.BackendStandard
        at weblogic.ldap.EmbeddedLDAP.start(EmbeddedLDAP.java:303)
        at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)
        at weblogic.work.ExecuteThread.execute(ExecuteThread.java:256)
        at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)

How to reproduce

1.     Start DB
2.     Either after starting apps tier or by simply starting weblogic admin server

Resolution

    Solution 1

1. There could be an issue in the permissions on the log directories on which Weblogic Admin Server logs are being written. Simply grant your applmgr recursive permissions on the directories.
2. login as applvis
3. chmod 777 -R /u01/oracle/VIS/fs1/FMW_Home/user_projects
4. chown -R applvis /u01/oracle/VIS/fs1/FMW_Home/user_projects

    Solution 2

1. Make sure have read/write/create permissions on the folder:/servers/AdminServer/data/ldap/ldapfiles/EmbeddedLDAP.tran
2. Clean up the /cache /tmp folder. e.g AdminServer/tmp AdminServer/cache
3. Back up old server_name/ldap folder, then delete the it e.g "yourdomain/AdminServer/ldap"
4. Restart the server.

Environment

1. Operating System - Oracle Linux x86-64
2. Installation Path - R12.2.0 > 12.2.2 > 12.2.4
3. Current Installation - R12.2.0