Biztalk and EntSSO Issues
If your database team itself is seperate it is little hard to figure out where exactly the problems lie . SSO issues are mostly realted to MSDTC settings .
It is not a common knowledge but there is an SSO configuration and troubleshooting tool . This does not fix any issue but just gives you a report . Get the tool here
Once you run the tool check the DTC settings .
MSDTC Settings:
Network DTC Access is enabled
Xa Transactions is enabled
Network Dtc Access Outbound is enabled
Network Dtc Access Inbound is enabled
Mutual Authentication required
Enterprise Single Sign-On Service:
Service Account: domain\mybtssvc
Account na\btssvc is a member of the following groups
BizTalk Application Users
BizTalk Isolated Host Users
BizTalk Server Administrators
Debugger Users
EDI Subsystem Users
IIS_WPG
SSO Administrators
SSO Affiliate Administrators
Administrators
Remote Desktop Users
Service status: Running
Hope that helped some of you .

