Oracle Database Errors or Warnings from Error ORA-38755 to ORA-38764

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ORA-38755: Flashback is already turned on for this tablespace.
Cause: An attempt was made to turn on flashback database logging for a tablespace that already has flashback turned on.
Action: No action required.
ORA-38756: Flashback is already turned off for this tablespace.
Cause: An attempt was made to turn off flashback database logging for a tablespace that already has flashback off.
Action: No action required.
ORA-38757: Database must be mounted and not open to FLASHBACK.
Cause: An attempt to Flashback a database was made when the database was not mounted or was already open.
Action: Mount the database and retry the FLASHBACK command.

ORA-38758: cannot flashback data file string; restored since last recovery
Cause: An attempt to do FLASHBACK DATABASE found that the file was restored since the last standby recovery. The file cannot be flashed back.
Action: The file must be taken offline before continuing with the FLASHBACK DATABASE command.
ORA-38759: Database must be mounted by only one instance and not open.
Cause: An attempt to turn on or off Flashback Database logging was made when the database was open or mounted by more than one instance.
Action: Mount the database in only one instance and retry the command.
ORA-38760: This database instance failed to turn on flashback database
Cause: Database flashback is on but this instance failed to start generating flashback data. Look in alert log for more specific errors.
Action: Correct the error or turn off database flashback.

ORA-38761: redo log sequence string in thread string, incarnation string could not be accessed
Cause: A redo log needed for the recovery portion of FLASHBACK could not be read or opened. The FLASHBACK operation failed.
Action: Restore the log and retry the FLASHBACK command.
ORA-38762: thread string redo log with scn string could not be found
Cause: A redo log needed for the recovery portion of FLASHBACK could not be found. The FLASHBACK operation failed.
Action: Restore the log and retry the FLASHBACK command.
ORA-38763: flashback not started; enabled threads have changed
Cause: A FLASHBACK DATABASE command did not start. The set of enabled threads changed during the time to flash back.
Action: The flashback cannot be performed. Perform a restore and an incomplete recovery instead.
ORA-38764: flashback not started; datafile string enabled threads are different
Cause: A FLASHBACK DATABASE command did not start. The datafile was restored from a backup taken when the enabled threads were different than at the time of the flashback.
Action: The flashback cannot be performed. Perform a restore and an incomplete recovery instead.

Above are list of Oracle Database Errors or Warnings from Error ORA-38755 to ORA-38764 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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