Need to Kill j000 process to shutdown the database after upgrade from 8.1.7.4 to 9.2.0.8.

This is a common problem after the upgrade. One important point to remember is to disable all the schedules for dbms jobs before kicking off the upgrade and enable the schedule after the uprade is over. Alternatively job_queue_processes parameter can be set to '0'.

You see following symptoms in the alert log.

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Active call for process 21244 user 'oracle' program 'oracle@hostname (J000)'
SHUTDOWN: waiting for active calls to complete.

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Trace File of J000 process shows

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Unix process pid: 13302, image: oracle@hostname (J000)

*** SESSION ID:(95.9333) 2007-12-14 22:50:52.282
OPIRIP: Uncaught error 1089. Error stack:
ORA-01089: immediate shutdown in progress - no operations are permitted
ORA-00448: normal completion of background process

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Reference - Metalik Note:342805.1