could not mount in exclusive mode
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Thread: could not mount in exclusive mode

  1. #1
    Join Date
    Nov 2005
    Posts
    2

    could not mount in exclusive mode

    I have 2 problems with my database.
    1. When i try to connect to my database using sql*plus some time it hangs.
    2. When i logged in to my (running) database, I got database could not mount in exclusive mode.Then i killed all the oracle backgroung processes and i started up the database.I got " Connected to Idle instance". Now it is working fine.

    Could you tell me what was the problem ?

  2. #2
    Join Date
    Sep 2002
    Location
    England
    Posts
    7,331
    check the alert log

  3. #3
    Join Date
    Nov 2005
    Posts
    2
    In alert log file ,
    sculkget: failed to lock /databases/ora10g//dbs/lkORCL exclusive
    sculkget: lock held by PID: 6159

    ORCL is my database instance name.

    ORA-09968: unable to lock file
    Linux Error: 11: Resource temporarily unavailable
    Additional information: 6159

    Then it starts stopping CJQ,MMNL and MMON background processes.

  4. #4
    Join Date
    Sep 2002
    Location
    England
    Posts
    7,331
    I think you need to shut everything down, make sure no processes are running / shared memory is cleaned up, then restart as you are in an unknown state

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