Incremental Backup TAG missing?

Question

run {
RECOVER COPY OF DATABASE WITH TAG 'PROD_INC_UPD'
UNTIL TIME 'SYSDATE-7';
BACKUP INCREMENTAL LEVEL 1 FOR RECOVER OF COPY WITH TAG 'PROD_INC_UPD'
DATABASE;
First time I run it, I see the following, the tag is there.
channel ORA_DISK_1: starting datafile copy
input datafile fno=00002 name=E:\ORACLE\PRODUCT\10.2.0\ORADATA\PROD\UNDOTBS01.DBF
channel ORA_DISK_2: starting datafile copy
input datafile fno=00004 name=E:\ORACLE\PRODUCT\10.2.0\ORADATA\PROD\USERS01.DBF
output filename=E:\FLASH_RECOVERY_AREA\PROD\DATAFILE\O1_MF_UNDOTBS1_4W8NRGOT_.DBF tag=PROD_INC_UPD recid=243 stamp=682036713
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:35
Now, after a day I run it again, it is using the random tag.
channel ORA_DISK_1: finished piece 1 at 21-MAR-09
piece handle=E:\FLASH_RECOVERY_AREA\PROD\BACKUPSET\2009_03_21\O1_MF_NNND1_TAG20090321T060510_4W9GYQ3V_.BKP tag=TAG20090321T060510 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:25
What did I do wrong?

Answer 1

Hi,
Can we use the compress option with image copy at the beginning( first time incremental run)?
Currentlly i am using the same scripts ( the first time is running is on sun and then every day).==> not sure that i am use the right strategy.
aslo i am confused the previous scripts with the following scripts:
on other database i have, i used the following scripts:
this script run only on Sun:
run{
sql'alter database recover managed standby database cancel'; ==> to stop the recovery, so i dont have to shutdown and mount standby database, then i can take Consistent backup ( right or wrong)
delete obsolete; ==> will only run in the weekend to delete the last backup level 0
allocate channel c1 type disk;
allocate channel c2 type disk;
backup format '/data/backup/RMAN_BACKUP/DBCONTROLFILE_%U'(current controlfile);
backup incremental level 0 tag "WEAKLY FULL BACKUP" filesperset 5 format '/data/backup/RMAN_BACKUP/DB_%U'(database);
release channel c1;
release channel c2;
then every day i am running this:
run{
sql'alter database recover managed standby database cancel';
allocate channel c1 type disk;
allocate channel c2 type disk;
backup format '/data/backup/RMAN_BACKUP/DBCONTROLFILE_%U'(current controlfile);
backup incremental level 1 tag "Daily incremental BACKUP" filesperset 5 format '/data/backup/RMAN_BACKUP/DB_%U'(database);
release channel c1;
release channel c2;
my biggest confuse between 2 strategy:
the "Recover copy of Database" is usefull for recovery purpore so i dont have to apply more than 1 worth day of archives in case i want to restore.
but the others strategy that i provided above, i dot know how i am suppose to use when i need to resore my database lets say in wed i get crash,
so if i lunched restore database, it will use the backup Level 0 From sun, but not the incremental backup or this is what i am thinking(maybe wrong).
the reason i am saying that is because when i lunched list backup, the only backup i have is from Sun and i dont have any backup from incremental.
i preferd to use the scripts above for simple reason is the compress options i have.
Finally My DB is 10.1.0.4 on Linux with 8 CPU
please clear my confusion and show me the light here.