How to change gateway hostname in existing SVC file for siebel CRM

Hi,

In one of the siebel enterprise server's SVC process is running with the gateway's production host name not the package name. Because of that if I try to run the main server in fail-over node then the particular enterprise server goes to handshake failed condition.

I need to replace the gateway host-name as package host-name from production host-name.

e.g. Currently running SVC process:

siebsvc -s siebsrvr -a -g PROD_HOST:2320 -e EN_SBLPROD -s SIEBPROD06

need to change the same as:
siebsvc -s siebsrvr -a -g PKG_HOST:2320 -e EN_SBLPROD -s SIEBPROD06

Please help me.