963401 wrote:By definition, "option" 2 is not an online backup.
If You want to take a backup of database using RMAN (Online) then there are 2 options:
1>Database should be in archive log mode
2> If you dont want to keep the database is archive log mode ,but still you want to use the RMAN (Online) to take backup then database should be mount stage.
Say what ? Are you the blind DBA?due to archiving database performance is little low,I have never seen archiving impact ion performance.