$DatabaseType
Database driver currently used. The value is case sensitive. Valid types are mysql, Oracle, and Pg.
Set($DatabaseType, 'mysql');
$DatabaseHost
The domain name of your database server. If you're running MySQL and it's on localhost, leave it blank for enhanced performance.
Set($DatabaseHost, 'localhost');
$DatabasePort
The port on which your database server runs. RT ignores this value unless it's a positive integer. It's usually safe to leave this blank.
Set($DatabasePort, 3306);
$DatabaseUser
The name of the database user (inside the database).
Set($DatabaseUser, 'rt_user');
$DatabasePassword
Password the DatabaseUser should use to access the database.
Set($DatabasePassword, 'p@ssw0rd');
$DatabaseName
The name of the RT's database on your database server.
Set($DatabaseName, 'rt3');
$DatabaseRequiresSSL
If you're using Postgres and have compiled in SSL support, set DatabaseRequireSSL to 1 to turn on SSL communication.
Set($DatabaseRequireSSL, undef);