No DAD Configuration Found

Hi,
Does anyone know why after login to the portal (From Single Sign On screen), immediately I got the
following error message

No DAD configuration Found
DAD name:
PROCEDURE :
URL : http://abc:7777/pls/portal30portal30...process_signon
PARAMETERS :
===========

ENVIRONMENT:
============
PLSQL_GATEWAY=WebDb
GATEWAY_IVERSION=2
SERVER_SOFTWARE=Apache/1.3.12 (Unix) ApacheJServ/1.1 mod_perl/1.22
GATEWAY_INTERFACE=CGI/1.1
SERVER_PORT=7777
SERVER_NAME=abc
REQUEST_METHOD=POST
QUERY_STRING=
PATH_INFO=/portal30portal30.wwsec_app_priv.process_signon
SCRIPT_NAME=/pls
REMOTE_HOST=
REMOTE_ADDR=192.168.1.7
SERVER_PROTOCOL=HTTP/1.0
REQUEST_PROTOCOL=HTTP
REMOTE_USER=
HTTP_CONTENT_LENGTH=316
HTTP_CONTENT_TYPE=application/x-www-form-urlencoded
HTTP_USER_AGENT=Mozilla/4.7 [en] (Win98; U)
HTTP_HOST=abc:7777
HTTP_ACCEPT=image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, image/png, */*
HTTP_ACCEPT_ENCODING=gzip
HTTP_ACCEPT_LANGUAGE=en
HTTP_ACCEPT_CHARSET=iso-8859-1,*,utf-8
HTTP_COOKIE=portal30=94427881152309BD990F6AD37C60994FF622A29A87ED6C9B1C9F490D92B8CB44D1AAFD8E9259587 F5F12DBC1D0A418EE5A2974F81E06F6180C508817C7440FDE7DACEDDA9F54F3D4817709272FCD2C6AD4CCCFDDB917279CBB8 FB5D6B362ED5E; portal30_sso=85F246EEC31554AB26436498E3B0DA775822001C0B4EA5D6BF258E87493CB4D0C9C9244417112949AA46523 52E16A764C2F4956D95D101AFAED127B0D65921B8644E53A39386C0CCBC0DC01CDC388DA4DA810DB81C2B5CFA
Authorization=
HTTP_IF_MODIFIED_SINCE=

Hopes you all can tackle the problem ....

Thanks for helping.