Hi all : I have install mysql-libs(/usr/lib/mysql) and Package mysql-devel - 5.0.45-7.el5.i386 is already installed by "yum install mysql-devel" . But when I I start the radius server using radiusd -x i get the following message : Could not link driver rlm_sql_mysql: rlm_sql_mysql.so: cannot open shared object file: No such file or directory Make sure it (and all its dependent libraries!) are in the search path of your s ystem's ld. /usr/local/etc/raddb/sql.conf[22]: Instantiation failed for module "sql" /usr/local/etc/raddb/sites-enabled/default[152]: Failed to find module "sql". /usr/local/etc/raddb/sites-enabled/default[62]: Errors parsing authorize section . } Errors initializing modules What's the problem ? how can I to solve the problem ? Thanks for any help Regards Vicky