Backup Offline Warning

Hi GURU,

I have a problem, I have launch bck a offline force. The bck it finishes with this warning ""BR068W SAP system is running or SAP user is connected to database - database cannot be shut down"but I do not understand why. You can help me?

SAP R/3 470

DB Ora 9,2

S.O. Cluster Windows 2003

BCK is launch with this script:

c:\WINDOWS\system32\cluster.exe ***** resource *** world /offline

net start OracleService%ORACLE_SID%

z:\run_loc\brbackup - c - m all - t offline_force > z:\tsm\tsm_log\brbackup_offline.log

c:\WINDOWS\system32\cluster.exe ***** resource *** world /online

Reagards.