Oracle Database Errors or Warnings from Error ORA-01611 to ORA-01620

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ORA-01611: thread number string is invalid – must be between 1 and string
Cause: A thread number in a command is greater than the number of threads supported by the control file.
Action: Use a thread number that is valid, or resize the thread record and/or checkpoint progress record sections of the control file.
ORA-01612: instance string (thread string) is already enabled
Cause: An attempt was made to enable a thread that is already enabled.
Action: Either use this thread or enable another thread.
ORA-01613: instance string (thread string) only has string logs – at least 2 logs required to enable.
Cause: The thread cannot be enabled because it only has two online log files associated with it.
Action: Add logs to the thread or pick another thread to enable

ORA-01614: instance string (thread string) is busy – cannot enable
Cause: The mount enqueue for the thread could not be acquired when attempting to enable the thread. This probably means that another process has already started enabling this thread.
Action: Wait and try again, or find another thread to enable.
ORA-01615: instance string (thread string) is mounted – cannot disable
Cause: Some instance, possibly this one, has allocated the thread for its use. The thread can not be disabled while in use.
Action: Shut the instance down cleany using the thread.
ORA-01616: instance string (thread string) is open – cannot disable
Cause: The thread is not closed. The last instance to use the thread died leaving the thread open. A thread cannot be disabled until it is closed. It is still required for crash or instance recovery.
Action: If the database is open, instance recovery should close the thread soon – wait a few minutes. Otherwise open the database – crash recovery will close the thread.

ORA-01617: cannot mount: string is not a valid thread number
Cause: The INIT.ORA parameter “thread” is not between 1 and the number of threads allowed by the control file.
Action: Shut down the instance, change the INIT.ORA parameter and startup, or resize the thread record and/or checkpoint progress record sections of the control file.
ORA-01618: redo thread string is not enabled – cannot mount
Cause: The INIT.ORA parameter “thread” requests a thread that is not enabled. A thread must be enabled before it can be mounted.
Action: Shutdown the instance, change the INIT.ORA parameter and startup mounting a different thread. If the database is open in another instance then the thread may be enabled.
ORA-01619: thread string is mounted by another instance
Cause: The INIT.ORA parameter “thread” requests a thread that has been mounted by another instance. Only one instance may use a thread.
Action: Shutdown the instance, change the INIT.ORA parameter and startup mounting a different thread.
ORA-01620: no public threads are available for mounting
Cause: The INIT.ORA parameter “thread” is zero, its default value. There are no threads which have been publicly enabled, and not mounted.
Action: Shutdown the instance, change the INIT.ORA parameter to a thread which is privately enabled and not mounted. If the database is open in another instance, then a thread may be publicly enabled.

Above are list of Oracle Database Errors or Warnings from Error ORA-01611 to ORA-01620 received while performing certain operation against Oracle Database or related products.

What are Oracle Database Error Messages?

Oracle Error Messages may be returned while using products which are part of Oracle Database.  Each Oracle Database Error or Warning Message mentioned above contains the Warning or Error Message Statement, a short explanation of the probable causes of the Error message, and a recommended action.

Hope this was helpful.

Thanks,
SQLServerF1 Team
Information about Oracle Database Error Messages or Warning Messages on Windows and Linux Operating Systems.

 

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