Oracle - Errores y soluciones
ORA-01115: IO error reading block from file string (block # string)
Cause: Device on which the file resides is probably offline.
Action: Restore access to the device.
ORA-01117: adding file 'string' with illegal block size: string; limit is string
Cause: An attempt was made to add a database file with a block size that is greater than the maximum block size allowed.
Action: Retry the DDL command with a smaller block size.
ORA-01120: cannot remove online database file string
Cause: Attempting to drop a datafile when it is online.
Action: Take file offline before dropping.
ORA-01121: fetch out of sequence
Cause: Attempted to use ALTER DATABASE RENAME to rename a datafile that is online in an open instance or is being recovered.
Action: Close database in all instances and end all recovery sessions.
ORA-01123: cannot start online backup; media recovery not enabled
Cause: An attempt to start backup of an on-line tablespace failed because media recovery is not enabled.
Action: Enable media recovery and retry this operation.
ORA-01124: cannot recover data file string - file is in use or recovery
Cause: An attempt to do media recovery found that the file was not available for recovery. Either it is online and the database is open in some instance, or another process is curently doing media recovery on the file.
Action: Do not do media recovery.
ORA-01125: cannot disable media recovery - file string has online backup set
Cause: An attempt to disable media recovery found that an online backup is still in progress.
Action: End the backup of the offending tablespace and retry this command.