Dataguard issue:- URGENT!!!!!!!!!!!!!!!

Question

Dear all,
please help me in solving the problem of the dataguard, the problem i am facing is when ever a archive log is created it is first applied in standby system and next it is applied to PRIMARY system and if the STANDBY connection is lost the primary hangs.
I am doing this dataguard on oracle 9i on HP-Unix
If i put the value of log_archive_dest_2 as 'SERVICE=STANDBY OPTIONAL ARCH ASYNC NOAFFIRM REGISTER' then i am getting an error ORA-16025: parameter LOG_ARCHIVE_DEST_2 contains repeated or conflicting attributes.
the protection mode is maximum performance.
can any one help me out of this problem.
The parameters i have used for primary and standby are given below.
## ADDED PARAMETERS FOR DATAGUARD on PRIMARY
dg_broker_start=true
standby_file_management='AUTO'
log_archive_dest_state_1=ENABLE
log_archive_dest_state_2=ENABLE
log_archive_dest_1='LOCATION=/oracle/C30/saparch/C30arch MANDATORY'
log_archive_dest_2='SERVICE=STANDBY ARCH NOAFFIRM'
remote_archive_enable=true
standby_archive_dest='/oracle/C30/saparch/C30arch'
fal_server='SERVICE=STANDBY'
fal_client='SERVICE=PRIMARY'
## ADDED PARAMETERS FOR DATAGUARD ON STANDBY
dg_broker_start=true
standby_file_management='AUTO'
log_archive_dest_state_2='defer'
log_archive_dest_1='LOCATION=/oracle/C30/saparch/C30arch'
#log_archive_dest_2='SERVICE=PRIMARY OPTIONAL ARCH ASYNC NOAFFIRM REGISTER'
standby_archive_dest='/oracle/C30/saparch/C30arch'
fal_client='SERVICE=STANDBY'
fal_server='SERVICE=PRIMARY'
Please help me out!!!!!!!!!!!

Answer 1

thanks kamaljeet for reply,
the protection mode is MAXIMUM PERFORMANCE.
Please help me in sorting this problem.