Oracle RMAN Question:

What is hot backup and what is cold backup?

Answer:

Cold backup is a backup of database when datafiles are not opened. Hot backup is a backup when datafiles are opend and operational.Suppose your database is in mount stage ( not shutdown ) and you take a backup then it is also a cold backup since datafiles are not opened.

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What is the difference between cumulative incremental and differential incremental backups?	Explain the steps to perform the point in time recovery with a backup which is taken before the resetlogs of the db?