Which two are characteristics of user-managed backup and recovery operations？（）A、Recovery is initiated using SQL*Plus.B、Database files are backed up using SQL commands.C、Database files are backed up with Recovery Manager.D、Database files are restored using Recovery Manager.E、Database files are backed up using operating system commands.
Which two are characteristics of user-managed backup and recovery operations？（）
- A、Recovery is initiated using SQL*Plus.
- B、Database files are backed up using SQL commands.
- C、Database files are backed up with Recovery Manager.
- D、Database files are restored using Recovery Manager.
- E、Database files are backed up using operating system commands.
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