ACL connect privileges ORA-01422 ORA-06512

Question

Application Express Installation Guide
3.3.6.1 Granting Connect Privileges
The following example demonstrates how to grant connect privileges to any host for the APEX_030200 database user.
DECLARE
ACL_PATH VARCHAR2(4000);
ACL_ID RAW(16);
BEGIN
-- Look for the ACL currently assigned to '*' and give APEX_030200
-- the "connect" privilege if APEX_030200 does not have the privilege yet.
SELECT ACL INTO ACL_PATH FROM DBA_NETWORK_ACLS
WHERE HOST = '*' AND LOWER_PORT IS NULL AND UPPER_PORT IS NULL;
-- Before checking the privilege, ensure that the ACL is valid
-- (for example, does not contain stale references to dropped users).
-- If it does, the following exception will be raised:
EXCEPTION
-- When no ACL has been assigned to '*'.
WHEN NO_DATA_FOUND THEN
DBMS_NETWORK_ACL_ADMIN.CREATE_ACL('power_users.xml',
'ACL that lets power users to connect to everywhere',
'APEX_030200', TRUE, 'connect');
DBMS_NETWORK_ACL_ADMIN.ASSIGN_ACL('power_users.xml','*');
END;
COMMIT;return:
ORA-01422:
ORA-06512: line 8
SELECT * FROM sys.DBA_NETWORK_ACLS
WHERE HOST = '*' AND LOWER_PORT IS NULL AND UPPER_PORT IS NULL;
"HOST"     "LOWER_PORT"     "UPPER_PORT"     "ACL"     "ACLID"
"*"     ""     ""     "/sys/acls/users.xml"     "(RAW)"
"*"     ""     ""     "/sys/acls/power_users.xml"     "(RAW)"My Apex says login XDB Password
Sqlplus.exe "SYS/oracle@orcl AS SYSDBA" @epgstat.sql
All OK
Help
APEX 3.2
11g Rel1

Answer 1

Um , i have implemented the following pl/sql. It seem to kick the person out BUT (now this is a big BUT) within the grid control it mentions :
Details          Failed to connect to database instance: ORA-00604: error occurred at recursive SQL level 1.
create or replace trigger session_access
DECLARE
v_username sys.v_$session.username%type;
v_osuser sys.v_$session.osuser%type;
BEGIN
select s.username ,s.osuser into v_username,v_osuser
from v$session s where s.username='SUSANJO' and s.osuser='oracle';
IF (v_username ='SUSANJO' AND V_OSUSER='oracle' )
THEN
RAISE_APPLICATION_ERROR(-20001, 'You are not allowed to login using the program');
END IF;
END session_access;
Output :
SQL*Plus: Release 10.2.0.3.0 - Production on Mon Mar 23 12:36:43 2009
Copyright (c) 1982, 2006, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Production
With the Partitioning and Data Mining options
SQL> connect susanjo
Enter password:
ERROR:
ORA-00604: error occurred at recursive SQL level 1
ORA-20001: You are not allowed to login using the program
ORA-06512: at line 10
Warning: You are no longer connected to ORACLE.
SQL>
I did conduct a research which was not all that helpful too. So i am back to square one again.
regards
Susan John