Platform and Environment: Freeradius:1.0.5 on Redhat 9 MySQL:MySQL-standard-5.0.20-linux-i686 Step: 1. create database radius; 2.mysql -uroot -prootpass radius < db_mysql.sql ; 3.Edit radiusd.conf and sql.conf; Debug Result: Nothing to do. Sleeping until we see a request. rad_recv: Access-Request packet from host 202.117.7.223:1490, id=6, length=47 User-Name = "barney" CHAP-Password = 0xad35a90d409c25b78b6d148a531358d9ac Processing the authorize section of radiusd.conf modcall: entering group authorize for request 2 modcall[authorize]: module "preprocess" returns ok for request 2 rlm_chap: Setting 'Auth-Type := CHAP' modcall[authorize]: module "chap" returns ok for request 2 modcall[authorize]: module "mschap" returns noop for request 2 rlm_realm: No '@' in User-Name = "barney", looking up realm NULL rlm_realm: No such realm "NULL" modcall[authorize]: module "suffix" returns noop for request 2 radius_xlat: 'barney' rlm_sql (sql): sql_set_user escaped user --> 'barney' radius_xlat: 'SELECT id, UserName, Attribute, Value, op FROM radcheck WHERE Username = 'barney' ORDER BY id' rlm_sql (sql): Ignoring unconnected handle 4.. rlm_sql (sql): Ignoring unconnected handle 3.. rlm_sql (sql): Ignoring unconnected handle 2.. rlm_sql (sql): Ignoring unconnected handle 1.. rlm_sql (sql): Ignoring unconnected handle 0.. rlm_sql (sql): There are no DB handles to use! skipped 5, tried to connect 0 modcall[authorize]: module "sql" returns fail for request 2 modcall: group authorize returns fail for request 2 Finished request 2 Going to the next request --- Walking the entire request list --- Waking up in 6 seconds... rad_recv: Access-Request packet from host 202.117.7.223:1490, id=6, length=47 Discarding duplicate request from client liv1:1490 - ID: 6 --- Walking the entire request list --- Waking up in 2 seconds... --- Walking the entire request list --- Cleaning up request 2 ID 6 with timestamp 45bca7cb Nothing to do. Sleeping until we see a request. From the above results, I guess mysql doesnt work. But I can access databases from the command line .The Freeradius Server worked well when I use the "user", not using MySQL. Any suggestion?