RMAN
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The different between cumulative and differential incremental backup
A cumulative incremental backup, which includes all blocks changed since the most recent level 0 backup.A differential incremental backup, which includes only blocks changed since the most recent incremental backup. Incremental backups are differential by default.
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How to use rman backup a noarchivelog database
If a database runs in noarchivelog mode, then the only valid database backup is a consistent backup. So we need perform a clean shutdown first, then start the database in mount status.1 Shutdonw the database consistently and then mount it.shutdown immediate;startup force DBA;shutdown immediate...
