Hi, all : my hardware: P4 3.0G HYPER THREAD, 1G RAM, ide HD, cent os 4.6, CHAP auth, radclient with "-p 10", running on another PC, 120k users, in users file , about 1000 auths / sec; in oracle , about 76 auths / sec; in oracle(with Binding), about 500~700 auths / sec; btw, mysql is fast than oracle, about 900 auths/sec. --------------------------------------------------