  FORCEDERROR disk error under Oracle Rdb Database? 
 The Question is:
 
backup forced error in last sector read while backing up .rda files
 
 
 The Answer is:
 
  BACKUP is telling you that there might well be an error in the data
  stored in the specific original disk sector involved -- this flag
  indicates that BACKUP was not able to reliably read the data from
  the disk, and flags the potential corruption.
 
  Rewriting the faulty disk sector will trigger automatic bad block
  recovery, and a good block will replace the faulty block.
 
  Please contact Oracle if assistance in recovering data structures or
  data stored in the particular sector of the Oracle Rdb database,
  assuming that a BACKUP is not available. (The RDA file extension is
  commonly used with the Oracle Rdb database environment.  If this RDA
  file is not part of an Oracle Rdb database, please disregard.)
 
 
$ HELP/MESSAGE FORCEDERROR
 
 FORCEDERROR,  forced error flagged in last sector read
 
  Facility:     SYSTEM, System Services
 
  Explanation:  This message applies only to devices governed by the mass
                storage control protocol (MSCP). The data in this sector is
                copied from another sector that had unrecoverable read errors.
                This data is written with the Forced Error Indicator set to
                show subsequent readers that the data is questionable.
 
  User Action:  Be aware that the contents of the sector are only a close
                approximation of the data. Use the Backup utility to make a
                copy of the original file and recover its contents.
 
 
