OCI-19699
cannot make copies with compression enabled
Cause
Image copies cannot be compressed.
Action
If the function DBMS_BACKUP_RESTORE.BACKUPPIECECREATE is called outside Recovery Manager (RMAN), then incompatible values are being passed for the parameters DOCOMPRESS and IMAGCP. If this message occurs during an RMAN job, then this is an internal error in RMAN, and you should contact Oracle support.