a failover of an ServicerGuard Package is done by stopping and starting the package itselfs.
This can be done by command line or the ServiceGuard WebGUI.
You should look in the CommandLine Reference from HP-UX ServiceGuard. The version of your serviceguard is important.
with the command "cmviewcl" you can look on which node each package runs.
So stop the package.
Start a package
cmrunpkg -n <nodename> <packagename>
This is not a DB problem... so i think you should look in a HP-UX Forum