请教WebSphere Portal 6.1如何使用TAI与OAM做SSO

[jowvid]

请教高手，
我现在在用Oracle Access Manager和WAS 6.1做SSO。根据手册配置如下：
1.安全管理、应用程序和基础结构->Web 安全性 ->信任关联->启用信任关联->拦截器->新建->com.oblix.tai.was5.WebGate2TrustAssociationInterceptor
2.在com.oblix.tai.was5.WebGate2TrustAssociationInterceptor 中，定制三个属性：
属性1：com.ibm.websphere.security.trustassociation.types 值：webgate
属性2：com.ibm.websphere.security.trustassociation.webgate.config 值：webgate
属性3：com.ibm.websphere.security.trustassociation.webgate.interceptor 值：com.oblix.tai.was5.WebGate2TrustAssociationInterceptor

在OAM的配置为：
AccessGate配置：
AccessGate Name webgate_newportal74
Description Webgate for new portal 2010
State Enabled
Hostname ep.test.com
Port 80
Access Gate Password <Not Displayed>
Debug On
Maximum user session time (seconds) 3600
Idle Session Time (seconds) 3600

Maximum Connections 3
Transport Security Open

IPValidation Off
IPValidationException

Maximum Client Session Time (hours) 24
Failover threshold 3
Access server timeout threshold
Sleep For (seconds) 60

Maximum elements in cache 100000
Cache timeout (seconds) 1800

Impersonation username
Impersonation password <Not Displayed>

ASDK Client

Access Management Service On

Web Server Client

Primary HTTP Cookie Domain .test.com
Preferred HTTP Host ep.test.com
Deny On Not Protected On
CachePragmaHeader public
CacheControlHeader public
LogOutURLs

User Defined Parameters
Parameters Values
No User Defined Parameters available


请问当我打开主页时，为何依然需要输入用户名和密码？是哪里没有设置正确？谢谢。