I realized that when I turn on the server it gives that the system didn't connected. But when I restart the server it says Connection successesful. Why is this happenning? Other plugins like admin_sql.amxx are connecting without restarting. I recoded my system like admin_sql.amxx but it is the same.
L 12/26/2012 - 13:54:08: Start of error session.
L 12/26/2012 - 13:54:08: Info (map "de_dust2") (file "addons/amxmodx/logs/error_20121226.log")
L 12/26/2012 - 13:54:08: [AMXX] Plugin ("RegisterSystem.amxx") is setting itself as failed.
L 12/26/2012 - 13:54:08: [AMXX] Plugin says: [REGISTER SYSTEM] Could not connect to database!
L 12/26/2012 - 13:54:08: [AMXX] Displaying debug trace (plugin "RegisterSystem.amxx")
L 12/26/2012 - 13:54:08: [AMXX] Run time error 1: forced exit
L 12/26/2012 - 13:54:08: [AMXX] [0] RegisterSystem.sma::plugin_cfg (line 678 )