Unable to obtain an exclusive lock to embedded LDAP data files directory in Weblogic

ISSUE:

Could not obtain an exclusive lock to the embedded LDAP data files directory and due to this Admin Server was failing during startup.

ERROR OBSERVED:

Logs : $DOMAIN_NAME/servers/AdminServer/logs/AdminServer.out

<<

<Error> <EmbeddedLDAP> <BEA-171519> <Could not obtain an exclusive lock to the embedded LDAP data files directory: /u04/app/product/fusion/user_projects/domains/product_domain/servers/AdminServer/data/ldap/ldapfiles because another WebLogic Server is already using this directory. Ensure that the first WebLogic Server is completely shutdown and restart the server.>

<Notice> <WebLogicServer> <BEA-000365> <Server state changed to FAILED>

<Error> <WebLogicServer> <BEA-000383> <A critical service failed. The server will shut itself down>

<Notice> <WebLogicServer> <BEA-000365> <Server state changed to FORCE_SHUTTING_DOWN>

>>

ROOT CAUSE:

Some time even after proper shutdown or forceful shutdown .lok file does not get removed automatically and when users try to restart the server again , since file is already present ,it fails to start the servers.

SOLUTION:

Step 1) Delete EmbeddedLDAP.lok file from below location

$cd DOMAIN_HOME/servers/AdminServer/data/ldap/ldapfiles

$ rm -rf EmbeddedLDAP.lok

Step 2) Restart Weblogic Admin Server and retest issue.