> i wanna backup the database every monday and thuesday on a tape (DB_MO)
for
> monday and (DB_DO) for thuesday.
>
> the command "BACKUP DB DEV=DLTCLS02 T=F VOL=DB_DO SCR=N WAIT=NO" for
> thuesday is a Admin Command Schedule.
> the strange thing is that i always get the following error.. also when i
> start it directly in the console.
>
> adsm> backup db dev=dltcls02 type=full vol=db_do scr=no wait=yes
> ANR0984I Process 81 for DATABASE BACKUP started in the FOREGROUND at
> 11:29:35.
> ANR2280I Full database backup started as process 81.
> ANR4583E Database backup terminated - output media full and scratch media
> could not be mounted.
> ANR0985I Process 81 for DATABASE BACKUP running in the FOREGROUND
completed
> with completion state FAILURE at 11:30:40.
> ANS8001I Return code 8.
>
> adsm>
>
> the tape DB_DO is empty and located in the library.. also there is a empty
> scratch tape in this lib.
> and the loader is OK.

I don't see any mystery here. The backup fails when volume DB_DO fills up.
The presence of an empty scratch tape is irrelevant because the "scr=n"
option explicitly forbids the backup to use scratch tapes.