I got into this issue , where in while starting Grid Control components, opmnctl command failed with following errors
./opmnctl start globalInitNLS: NLS boot file not found or invalid -- default linked-in boot block used XML parser init: error 201. globalInitNLS: NLS boot file not found or invalid -- default linked-in boot block used XML parser init: error 201. globalInitNLS: NLS boot file not found or invalid -- default linked-in boot block used XML parser init: error 201. opmnctl: opmn start failed
On checking environment variables, I found ORA_NLS10 env variable was set. Unsetting it resolved the issue.
I had faced the similar issue and which got resolved by unsettling the ORA_NLS10 parameter,Peoples having the same issue in with 9i with ORACLE_NLS33
http://forums.oracle.com/forums/thread.jspa?messageID=745614