If you installed FC3 "out of the box", mysql should run ok.
First: check if you have installed postgresql and if it is running
#rpm -qa postgresql
postgresql-7.4.6-1.FC3.1
(is installed)
#/etc/rc.d/init.d/postgresql status or #service postgresql status
(see if it is runing)
Second: stop postgresql
#/etc/rc.d/init.d/postgresql stop
uninstall postgresql
#rpm -e postgresql
Third: start mysql
#/etc/rc.d/init.d/mysqld start or #service mysqld start
The root password is nothing after install. Try mysql:
#mysql -u root
If you have mysql prompt it is running ok:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 6 to server version: 3.23.58
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
mysql>
Ricardo Fernandes
(by my newb experience)