Wednesday 11 January 2012

ORA-01177: data file does not match dictionary - probably old incarnation

ORA-01177: data file does not match dictionary - probably old incarnation

Cause: When comparing the control file with the data dictionary after a CREATE CONTROLFILE or OPEN RESETLOGS, it was noted that this datafile was inconsistent with the dictionary. Most likely the file is a backup of a file that was dropped from the database, and the same file number was reused for a new file. It may also be that an incomplete recovery stopped at a time when this file number was used for another datafile.

Action: Do a CREATE CONTROLFILE with the correct file or none at all.

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