Error during RMAN Backup: No Listener

Hi !!
I've two database servers with Oracle Enterprise Linux 5.4 and Oracle 11g R2 (11.2.0.2).  I'm trying to setup Database between these two and during this process I'm having error while trying to backup the database for standby using RMAN.

Following is the details:

Primary database:  utstp
Primary server: utah
Secondary database: utsts
Secondary Server: utah-copy

Following is the RMAN script:

run {
 allocate channel c1 type disk;
 allocate auxiliary channel s1 type disk;
 allocate auxiliary channel s2 type disk;
 duplicate target database for standby dorecover nofilenamecheck from active database
spfile parameter_value_convert ('UTSTP','UTSTS','UTSTS','UTSTP')  set db_name='UTST'
 set db_unique_name='UTSTS'