MaxDB 7.8 backup_start / backup_finish

Hello,

i have a problem.

We want to use the backup_start  for filersnapshot.

When i open one session

dbmcli  -d TST -u dbadmin,dbadmin -uUTL

dbmcli  -> backup_start backupmedium

dbmcli  -> backup_finish  backupmedium externalbackupid 0

it's ok.

When i use

dbmcli  -d TST -u dbadmin,dbadmin -uUTL -c backup_start backupmedium

dbmcli  -d TST -u dbadmin,dbadmin -uUTL -c backup_finish  backupmedium externalbackupid 0

-24984,ERR_MENOVALID: Invalid medium definition

i become an errormessage.

how can i make a script  ?

dbmcli  -d TST -u dbadmin,dbadmin -uUTL -c backup_start backupmedium

wait 120

dbmcli  -d TST -u dbadmin,dbadmin -uUTL -c backup_finish  backupmedium externalbackupid 0

i have also tested with shell-script

cmd=`cat <<EOF | dbmcli -d $DB_NAME  -U c_J2EE -uUTL  2>&1

......

but in dbmcli there no sleep or wait.

When i leave the session i become the error "Invalid medium definition".

Thanks.

Rainer