This manual is intended for database administrators who perform the following tasks:■ Perform backups and restore database files with operating system utilities, and perform recovery with the SQL*Plus RECOVER command.■ Use Recovery Manager as a backup and recovery solution but choose to back up some files with user-managed methods.To use this document, you need to be familiar with relational database concepts and basic database administration as described in these manuals:■ Oracle9i Database Concepts■ Oracle9i Backup and Recovery Concepts■ Oracle9i Database Administrator's GuideYou should also be familiar with the operating system environment under which you are running Oracle.