oracle error- ORA-01093: ALTER DATABASE CLOSE only permitted with no sessions connected

Oracle error

ORA-01093: ALTER DATABASE CLOSE only permitted with no sessions connected

Cause: There is at least one more session other than the current one logged into the instance. ALTER DATABASE CLOSE is not permitted.

Action: Find the other sessions and log them out and resubmit the command

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oracle error- ORA-01092: ORACLE instance terminated. Disconnection forced

Oracle error

ORA-01092: ORACLE instance terminated. Disconnection forced

Cause: The instance this process was connected to was terminated abnormally, probably via a shutdown abort. This process was forced to disconnect from the instance.

Action: Examine the alert log for more details. When the instance has been restarted, retry action.

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oracle error- ORA-01091: failure during startup force

Oracle error

ORA-01091: failure during startup force

Cause: Unable to destroy the old SGA.

Action: Manually remove the old SGA and reissue the STARTUP command

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