What databases does Bugzilla run on?
MySQL is the default database for Bugzilla. It was originally chosen because it is free, easy to install, and was available for the hardware Netscape intended to run it on. As of Bugzilla 2.22, complete support for PostgreSQL is included. With this release using PostgreSQL with Bugzilla should be as stable as using MySQL. If you experience any problems with PostgreSQL compatibility, they will be taken as seriously as if you were running MySQL. There are plans to include an Oracle driver for Bugzilla 3.1.2. Track progress at Bug 189947. Sybase support was worked on for a time. However, several complicating factors have prevented Sybase support from being realized. There are currently no plans to revive it. Bug 237862 is a good bug to read through if you’d like to see what progress is being made on general database compatibility.