When using hyperic-hq-installer-x86-linux-5.0.0.tar.gz there is an error which prevents the server from starting.
The db-upgrade.xml script reports an error when its run during initial server configuration.
ERROR: syntax error at or near "not" at character 17
STATEMENT: create table if not exists EAM_ENCRYPTION_KEYS (encryption_key varchar(2000) not null, creation_date timestamp primary key default now())
This is because the "if not exists" syntax is not supported by the bundled version of Postgresql (Version 8.2)
To work around it, I removed the "if not exists" entry from db-upgrade.xml. I suspect this only works for initial installs.