About creating RMAN scripts manually

You can create RMAN scripts manually and when you create a script, you need to specify the type of backup and assign a name to the output file. Keep in mind the following considerations:

Backup type

RMAN supports the following different types of backups (In the examples, n must be 1 or higher):

BACKUP FULL
BACKUP INCREMNTAL LEVEL 0 (Full backup base for incremental backups)
BACKUP INCREMENTAL LEVEL n (Differential incremental backup)
BACKUP INCREMENTAL LEVEL n CUMULATIVE (Cumulative incremental backup)

When generating a data file backup set, you can make either an incremental backup or a full backup. Both a full backup and an incremental level 0 perform a complete backup of the data file. However, an incremental level 0 backup can be used as the base for incremental level n and or incremental level n cumulative backups.

File names

Observe the following with regard to file names:

Each output file must have a unique name. Use the %U format specifier to satisfy this restriction. %U is equivalent to %u_%p_%c, and it guarantees the uniqueness of the backup set name in all circumstances.
Put %t at the end of the backup file name format. NetBackup uses the timestamp as part of its search criteria for catalog images. Without this timestamp, performance might degrade as the NetBackup catalog grows.
Ensure that the format that is specified for all RMAN backup piece names does not contain any space characters.

More Information

Registering authorized locations used by a NetBackup database script-based policy

About the NetBackup for Oracle sample scripts

Using the NetBackup for Oracle sample scripts

About the set duplex command

About creating RMAN scripts manually

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