|Oracle8i Supplied PL/SQL Packages Reference
Release 2 (8.1.6)
Part Number A76936-01
DBMS_BACKUP_RESTORE, 2 of 2
In release 8.1.6 and higher, Oracle correctly normalizes filenames. However, you must use this procedure to normalize filenames in the control file and recovery catalog from earlier releases.
In releases prior to 8.1.6, a flawed filename normalization mechanism allowed two different filenames to refer to one physical file. DBMS_BACKUP_RESTORE corrects this so that Oracle accurately identifies all physical files referenced in the control file and the recovery catalog.
For more information on this package and for detailed procedures on executing it, please refer to Oracle8i Migration.