You need to install both the server and client mySQL rpms. The libmysqlclient.so is included in the mySQL client rpm. Apart from that, I am assuming that if you are installing SER from source, you remembered to include mySQL in the make file. mySQL is excluded by default. You will need to run the mySQL script to generate the required tables and after that set the correct permissions for the mySQL user and root. On the SER side you will also need to run the ser mySQL script to generate the ser database. finally you will need to edit the mySQL file in /etc/rc.d/init.d to auto start mySQL. Please note that by default the init file has no run levels set. You need to edit mySQL and insert run levels 345.or use chkconfig and levels option 345 and on to change the run levels. To take effect restart mySQL. Need more help "holla"