The documentation on installing a DB service agent for database variables does not explicitly state this.
So for clarification, if you already have a DB service agent installed for eg MS SQL Server and you would like to use it also for eg Oracle Databases there are two simple steps:
- add the JDBC driver as specified in the documentation under Step 3. into the already existing JDBC directory
- restart your agent
Some additional steps may be necessary for example for enabling windows authentication with SQL Server, this is described in detail on the documentation page, here:
https://docs.automic.com/documentation/webhelp/english/ALL/components/AE/11/All%20Guides/help.htm#ucacvk.htm?