how to catch module fail

[zhongwei feng]

hi, all:

I wanna catch sql module fail , therefore  :

site-enable/default:
authorize {
#
#
...
	sql

	if (fail) {
		update reply {
			Session-Timeout := 300
		}
		update control {
			Auth-Type := "Accept"
		}
	}
#
#
}

but debug output is :
++[unix] returns notfound
++[files] returns noop
[sql]   expand: %{User-Name} -> yuanlin2
[sql] sql_set_user escaped user --> 'yuanlin2'
rlm_sql (sql): Trying to (re)connect unconnected handle 4..
rlm_sql (sql): Attempting to connect rlm_sql_oraclet #4
rlm_sql_oraclet: Oracle logon failed: 'ORA-12541: TNS:no listener '
rlm_sql (sql): Failed to connect DB handle #4
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 1
++[sql] returns fail
Invalid user: [yuanlin2/yuanlin] (from client vmhost port 123456)
Using Post-Auth-Type Reject
+- entering group REJECT {...}

mmmmm, why ?? 
==================================
there is another solution below:
in authorize section :

	redundant {	
		sql
		files
	}

in users file :

DEFAULT	Auth-Type := Accept
	Session-Timeout := 300	


==================================
but ,   how to catch sql module fail ?