BEA-141281 unable to get file lock While starting server

Error logfile:

<Apr 1, 2013 2:41:03 PM IST> <Info> <WebLogicServer> <BEA-000377> <Starting WebLogic Server with Java HotSpot(TM) 64-Bit Server VM Version 23.5-b02 from Oracle Corporation>

<Apr 1, 2013 2:41:14 PM IST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

<Apr 1, 2013 2:41:24 PM IST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

<Apr 1, 2013 2:41:34 PM IST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

<Apr 1, 2013 2:41:44 PM IST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

<Apr 1, 2013 2:41:54 PM IST> <Info> <Management> <BEA-141281> <unable to get file lock, will retry ...>

Solution:

cd $MW_HOME/user_projects/domains/<domain_name>/servers/Managed_Server/tmp

rm -rf *.lok