ORA-38869: datafile string has been restored from an RMAN backup

曾春华

ORA-38869: datafile stringhas beenrestored from an RMAN backup with undo

block compression.

Cause: Flashback Database could notflash back the database because a file was

restored from an RMAN backup with undo block compression,and the Flashback

target was to a time when the missing undo may be neededto open the database.

Action: Restore an earlier backup ofthe file and retry the command or Flashback

to a later time.