OnDemand TSM

[Eric]

Hi everyone,
I've got a problem with sending db2 backups and logs to TSM.
If I start OnDemand the old fashion way (db2start),
I can make a backup (db2 backup <instace> use tsm) or
(/usr/lpp/ars/bin/arsdb -I <instance> -v -y adsm).
But if I use the Ondemand program to start OnDemand
(/usr/lpp/ars/bin/arsdb -I <instance> -gkv), none of the backups work.
The first cmd results with :
SQL2062N An error occurred while accessing media
"/db2home/db2godm1/sqllib/adsm/libtadsm.a". Reason code: "409".
And the second with :
Unable to backup database <instance>. err=-2062

I think the problem lays in ars.cfg.
The parameters are :
# DB2/TSM Parameters
ARS_DB2_ADSM_CONFIG=/db2home/db2godm1/tsm/dsm_odmg.opt
ARS_DB2_TSM_CONFIG=/db2home/db2godm1/tsm/dsm_odmg.opt
# ORACLE Parameters (Library Server Only) #
ARS_ORACLE_HOME=/oracle
# Storage Manager Parameters (Library/Object Server) #
# Storage Manager for OnDemand to use
ARS_STORAGE_MANAGER=ADSM
# TSM Parameters (Object Server Only) #
DSM_DIR=/usr/tivoli/tsm/client/ba/bin
DSM_CONFIG=/usr/tivoli/tsm/client/ba/bin/dsmodm00g.opt
DSM_LOG=/appl/odm00g/tmp
DSMI_DIR=/usr/tivoli/tsm/client/ba/bin
DSMI_CONFIG=/usr/tivoli/tsm/client/ba/bin/dsmodm00g.opt
DSMI_LOG=/appl/odm00g/tmp

The fact that my "normal" backup works,
indicates that my other configurations are ok.
Can anyone give my a hint ?
Regards Eric.