Incremental cumulative backup solution?

Question

Hi to all,
I want to use rman cumulative incremental backup strategy i.e.I want to take one full database backup LEVEL0 every week (Sunday), and one incremental cumulative LEVEL1 database backup every day.
RMAN configuration parameters are:
CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default
CONFIGURE BACKUP OPTIMIZATION ON;* *// I did this to avoid doing backup on the same archivelogs files, in this case RMAN will backup only files that were not backed up.*
CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default
CONFIGURE CONTROLFILE AUTOBACKUP OFF;# default
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F';# default
CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE MAXSETSIZE TO UNLIMITED; # default
CONFIGURE ENCRYPTION FOR DATABASE OFF; # default
CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default
CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default
CONFIGURE SNAPSHOT CONTROLFILE NAME TO 'C:\ORACLE\PRODUCT\10.2.0\DB_1\DATABASE\SNCFORCL.ORA'; # default
Here are my RMAN scripts:
weekly.rman
+run {+
BACKUP AS COMPRESSED BACKUPSET
INCREMENTAL LEVEL = 0 CUMULATIVE
DEVICE TYPE DISK
TAG = 'LEVEL0-SUNDAY'
FORMAT 'D:\RMAN_BACKUP\DB_%d_%u_%s_%T'
DATABASE;
crosscheck archivelog all;
delete expired archivelog all;
BACKUP AS COMPRESSED BACKUPSET ARCHIVELOG ALL FORMAT 'D:\RMAN_BACKUP\arch_%d_%u_%s_%T';
CROSSCHECK BACKUP;
DELETE NOPROMPT OBSOLETE; // To delete backup (LEVEL0 and LEVEL1) and archivelogs files because RETENTION POLICY TO REDUNDANCY 1 and to make free space for new LEVEL0 backup.
DELETE NOPROMPT EXPIRED BACKUP;
crosscheck archivelog all;
delete expired archivelog all;
DELETE NOPROMPT ARCHIVELOG UNTIL TIME "SYSDATE-3";
+}+
daily.rman
+run {+
BACKUP AS COMPRESSED BACKUPSET
INCREMENTAL LEVEL = 1 CUMULATIVE
DEVICE TYPE DISK
TAG = 'LEVEL1-MONDAY'
FORMAT 'D:\RMAN_BACKUP\DB_%d_%u_%s_%T'
DATABASE;
BACKUP AS COMPRESSED BACKUPSET ARCHIVELOG ALL FORMAT 'D:\RMAN_BACKUP\arch_%d_%u_%s_%T';
crosscheck archivelog all;
delete expired archivelog all;
DELETE NOPROMPT ARCHIVELOG UNTIL TIME "SYSDATE-3"; *//To delete archivelog files older than 3 days, I do not have enough space to store archive files from all week.*
+}+
What do you think about this RMAN scripts?
Do you have a better solution?
Thanks in advance for any proposal or suggestion!

Answer 1

Your script looks good. As an alternative, you can also use the following command:
Backup archivelog until time 'sysdate-3' backedup 1 times to 'sbt_tabe';
Any suggestions are highly appreciated.
Thanks,
Sai.