You must already have added both servers to the interfaces file before you can install the high-availability stored procedures. If you run installhasvss before performing these tasks, you will have to reinstall all the system stored procedures.
The installhasvss script:
Installs the stored procedures required for failover (for example, sp_companion).
Installs the SYB_HACMP server in sysservers.
You must have System Administrator privileges to run installhasvss.
installhasvss is located in $SYBASE/ASE-12_5/scripts. To execute installhasvss, enter:
$SYBASE/OCS-12_5/bin/isql -Usa -Ppassword -Sservername < ../scripts/installhasvss
installhasvss prints messages as it creates stored procedures and creates the SYB_HACMP server.