Install a recent version of MySQL 3. You will need the .h and library files later to install the MySQL perl module. MySQL 4 is due soon, but we are not making plans to support it yet (if you try EPrints with MySQL 4 and it works, please let us know)
If installing from RPM you require: mysql-server, mysql-devel and mysql RPMs.
EPrints 2.3 was tested with: 3.23.29a-gamma