RMAN backup Scripts: Please Check and Advice

Question

Dear All
We are now upgrading our database from 9iR2 to 10gR2.
Before this process we want a full database backup with RMAN with the following scrips. I also included our current database configuration.
So, dear all gurus please check this process if any thing goes wrong and give some valuable advice for better performance and other issue.
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/data01          400GB
/data02      400GB
/data03          400GB
/idx04          400GB
Current Tablespace Used Size= 1700GB
Total Tablespace=31
Total File=295
Max File Size= 15GB
Avg File Size= 9GB
CPU_COUNT=4
Memory=32GB
sqlplus /nolog
conn /as sysdba
--configured database in archivelog mode.  Then
create user rman identified by pass default tablespace INDX tempprary tablespace temp;grant connect,resource,RECOVERY_CATALOG_OWNER to RMAN;
RMAN target rman/rman@dwh nocatalog
RMAN>configure channel device type disk maxpiecesize=64GB;
RMAN>configure channel device type disk maxsetsize=195GB;
RMAN>configure channel device type disk parallelism=4;
RMAN>run { 
allocate channel Channel1 type disk format '/data01/oracle/rman_backup/DWH_df_%s_%p_%c';
allocate channel Channel2 type disk format '/data02/oracle/rman_backup/DWH_df_%s_%p_%c';
allocate channel Channel3 type disk format '/data03/oracle/rman_backup/DWH_df_%s_%p_%c';
allocate channel Channel4 type disk format '/idx01/oracle/rman_backup/DWH_df_%s_%p_%c' ;
backup as compressed backupset database plus archivelog;
backup current controlfile format '/idx01/oracle/rman_backup/DWH_cf_%U.f';
backup spfiel format '/idx01/oracle/rman_backup/DWH_spf_%U.f';
release channel Channel1;
release channel Channel2;
release channel Channel3;
release channel Channel4;
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Thanks & Regards
Quazi Abdur Rab

Answer 1

Try this ...
RUN {
RECOVER COPY OF DATABASE WITH TAG 'incr_backup' UNTIL TIME 'SYSDATE - 7';
BACKUP INCREMENTAL LEVEL 1 FOR RECOVER OF COPY WITH TAG 'incr_backup' DATABASE;
The RECOVER COPY... line will not do anything until the script has been running for more than 7 days. The BACKUP INCREMENTAL line will perform a complete backup (level 0) the first day it is run, with all subsequent backups being level 1 incremental backups. After 7 days, the RECOVER COPY... line will start to take effect, merging all incremental backups older than 7 days into the level 0 backup, effectively moving the level 0 backup forward. The effect of this is that you will permanently have a 7 day recovery window with a 7 day old level 0 backup and 6 level 1 incremental backups. Notice that the tag must be used to identify which incremental backups apply to which image copies