Oracle Database Errors or Warnings from Error ORA-38746 to ORA-38754

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ORA-38746: error occurred while restoring data block (file# string, block# string)
Cause: An error occurred during a FLASHBACK DATABASE command. See other errors on error stack.
Action: Investigate why the error occurred. It may be that the flashback database log data is corrupt. If so, a restore and an incomplete recovery must be performed instead.
ORA-38747: corrupt before image (file# string, block# string)
Cause: A corrupt data block before image was encountered during a FLASHBACK DATABASE command.
Action: The flashback log data is probably corrupt. If so, a restore and an incomplete recovery must be performed instead.
ORA-38748: cannot flashback data file string – file is in use or recovery
Cause: An attempt to do FLASHBACK DATABASE found that the file was not available for recovery. Either it was online and the database was open in some instance, or another process was currently doing media recovery or flashback on the file.
Action: Do not do FLASHBACK DATABASE.

ORA-38749: A media recovery has been started.
Cause: An attempt was made to start a FLASHBACK DATABASE in the same session as a media recovery.
Action: Complete or cancel the first media recovery session.
ORA-38750: FLASHBACK DATABASE may not be performed using a dispatcher.
Cause: An attempt was made to use a dispatcher process for FLASHBACK DATABASE. Memory requirements disallow this recovery method.
Action: Connect to the instance via a dedicated server process to perform FLASHBACK DATABASE.
ORA-38751: Flashback database log: “string”
Cause: This message reports the filename for details of another message.
Action: Other messages will accompany this message. See the associated messages for the appropriate action to take.

ORA-38752: file string does not exist
Cause: During an RMAN FLASHBACK DATABASE conversation, a file was listed which was not part of the database. The RMAN conversation was aborted.
Action: Retry the conversation with the appropriate file numbers.
ORA-38753: Cannot flashback data file string; no flashback log data.
Cause: An attempt to perform a FLASHBACK DATABASE failed because the file does not have enough flashback log data to cover the time to flash back. Either the file did not have flashback generation enabled for it, or had flashback generation turned off for it some time during the time span of the flashback.
Action: The file cannot be flashed back. The file must be taken offline or the tablespace dropped before continuing with the FLASHBACK DATABASE command.
ORA-38754: FLASHBACK DATABASE not started; required redo log is not available
Cause: A FLASHBACK DATABASE command did not start. A redo log needed for the recovery part of FLASHBACK DATABASE could not be found or accessed.
Action: See trace files for details of the problem.

Above are list of Oracle Database Errors or Warnings from Error ORA-38746 to ORA-38754 received while performing certain operation against Oracle Database or related products.

What are atOracle Database Error Messages?

Oracle Error Messages may be returned while using products which are part of Oracle Database. Each Oracle Dabase 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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