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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.
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