I have 2 instances on the server (8.1.6)
Till noon it was fine..
Now that I try to start up the 2nd instance, I set the ORACLE_SID and HOME and PATH to respective paths and when I start the db it says:
ORA-01102: cannot mount database in EXCLUSIVE mode
Why is this. The other DB is simply fine.. When I log into the unix as oracle user, the default profile is set to the other db and then when i need this 2nd instance I change and use..
But not anymore, I tried shutting down the 1st.. same problem.. Why?
I have taken it from manual ,i am not sure how practically it works .
Cause: An instance tried to mount the database in exclusive mode, but some other instance has already mounted the database in exclusive or parallel mode.
Action: Either mount the database in parallel mode or shut down all other instances before mounting the database in exclusive mode
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Have you tried the other way round, mount the second DB and then trying to mount the first DB ?
A Winner never Quits, A Quitter never Wins
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