My mysql database server is different computer than my ser server. ser was not able to connect to database. I put some debug code in authdb_mod.c static int child_init(int rank) { db_handle = db_init(db_url); LOG(L_ERR, "authdb_mod.c#child_init(): db_url: %s\n", db_url); if (!db_handle) { LOG(L_ERR, "auth_db:init_child(): Unable to connect database\n"); return -1; } return 0; } I have found db_url is not getting the value from my ser.cft. Its getting the default value from config.h that was defined before compiled. I compiled my ser after editing config.h with mysql param that match my situation and my ser is up !! Thanks, -- Mohammad Khan