Question on Differential Incremental Backup script.

Question

Version:11g
OS : AIX 5.3
I only have theoretical knowledge of RMAN. I am planning to implement Differential Incremental Backup for my database. My strategy is
a. Weekly level 0 backup at Sunday morning 2:00 am
b. Daily Level 1 Differential Incremental Backups at 2:00 am from Monday to Saturday.
c. Backup all archived log filesFirst script to perform level 0 backup -- This script will be run by a cron job every Sunday morning 2:00 am
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run {
allocate channel ch1 device type disk;
backup incremental level 0 format '/u07/rman_backup/FULL_%d_%u' database tag "weekly_full";
backup format '/u07/rman_backup/RMAN_CTL%s:%t:%p.bkp' current controlfile;
release channel ch1;
allocate channel ch1 device type disk;
backup (archivelog all  format='/u08/rman_backup/archbkp_dir/ARCH_%d_%T_%u_s%s_p%p' DELETE INPUT TAG "archivelogs");
release channel ch1;
}The below script is to perform level 1 Differential Incremental Backups for the next 6 days. This script will be run daily
at 2:00 am monday to saturday by a cronjob. I'll create 6 scripts like below, the only difference being the TAG "Monday-level1","Tuesday-level1"...etc.
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run {
allocate channel ch1 device type disk;
backup incremental level 1 format '/u07/rman_backup/RMAN_DBF_%s:%t:%p.bkp' database tag "Monday-level1";
backup format '/u07/rman_backup/RMAN_CTL<%s:%t:%p>.bkp' current controlfile;
release channel ch1;
allocate channel ch1 device type disk;
backup (archivelog all  format='/u08/rman_backup/archbkp_dir/ARCH_%d_%T_%u_s%s_p%p' delete input tag "archivelogs");
release channel ch1;
}Question 1.
Is my level 1 script correct ?
Question2.
Will the above scripts for level 0 and level 1 automatically delete the
obsolete level 0 and level 1 backup files when a new weekly cycle starts?
Any more enhancements(or corrections) you gurus want to suggest?

Answer 1

Above scripts seems to be correct.
Why you don't test it on test environment?
These codes don't delete obsolete backups of the database. Then just delete backed up archived redo log files due to DELETE INPUT command
If you use retention policy to recovery window of 7 days, to delete obsolete backups you need to run CROSSCHECK command and then DELETE OBSOLETE to delete all obsolete backups
My suggestions
- Practice it on test environment
- Read documentation before performing any tests
- Try to understand each line of these scripts based on documentation