Query to find the concurrent process are locking in rac.
This query is used for find out the concurrent process are locked while bouncing them in RAC environment , If you return any values logon to the respective nodes and kill them , using alter sytem kill session.
Query
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SELECT gv$access.sid, gv$session.serial#,gv$session.inst_id,gv$session.status,gv$session.process FROM gv$session,gv$access WHERE gv$access.sid = gv$session.sid and gv$access.object = 'FND_CP_FNDSM' GROUP BY gv$access.sid, gv$session.serial#,gv$session.inst_id,gv$session.status,gv$session.process;