RMAN Backup Script with TSM Env setting

connect target /
connect catalog catuse/catuser@rmancatlogdb
CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 180 DAYS;
run {
allocate channel c3 type 'SBT_TAPE' parms 'ENV=(TDPO_OPTFILE=C:\Program Files\tivoli\TSM\AgentOBA\tdpo_dbname.opt)';
backup database format 'DB_%d_%s_%p_%t' include current controlfile filesperset 12;
sql 'alter system archive log current';
change archivelog all crosscheck;
backup archivelog all format 'AL_%d_%s_%p_%t' filesperset 32;
backup current controlfile format '%d_%T_%t_%s_%p.ctl';
release channel c3;
}