Not able to start Managed Server

Issue :

Managed Server not starting

weblogic.store.PersistentStoreExcept ion: [Store:280105]The persistent file store "_WLS_ManagedServer" cannot open file _WLS_MANAGEDSERVER000000.DAT.
weblogic.store.PersistentStoreException: [Store:280105]The persistent file store "_WLS_ManagedServer" cannot open file _WLS_MANAGEDSERVER000000.DAT.

Solution:
Remove the lock files from the below location .

cd $WL_HOME/user_projects/domains//servers//data/ldap/ldapfiles
$WL_HOME/user_projects/domains//servers//tmp/
$WL_HOME/user_projects/domains//servers//data/store/diagnostics
$WL_HOME/user_projects/domains//servers//data/store/default