I installed OBIEE 11G in my machine and after the first restart faced this issue after which the weblogic server got shutdown.
<Jul 8, 2012 4:27:28 PM EDT> <Info> <Management>
<BEA-141281> <unable to get file lock, will retry ...>
<Jul 8, 2012 4:27:38 PM EDT> <Info> <Management>
<BEA-141281> <unable to get file lock, will retry ...>
<Jul 8, 2012 4:27:48 PM EDT> <Info> <Management>
<BEA-141281> <unable to get file lock, will retry ...>
<Jul 8, 2012 4:27:58 PM EDT> <Info> <Management>
<BEA-141281> <unable to get file lock, will retry ...>
<Jul 8, 2012 4:28:08 PM EDT> <Info> <Management>
<BEA-141281> <unable to get file lock, will retry ...>
<Jul 8, 2012 4:28:18 PM EDT> <Info> <Management>
<BEA-141281> <unable to get file lock, will retry ...>
<Jul 8, 2012 4:28:28 PM EDT> <Info> <Management>
<BEA-141281> <unable to get file lock, will retry ...>
<Jul 8, 2012 4:28:38 PM EDT> <Info> <Management>
<BEA-141281> <unable to get file lock, will retry ...>
This is because there is a lock in the WLS which has to be removed. For that go to the path
ORACLE_HOME//user_projects/domains/bifoundation_domain/servers/AdminServer/tmp and delete the file.
When you later start the services its going to work fine.