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Status Functionality already exists
Created by Guest
Created on Jul 15, 2014

.net Trusted Connection String for DB2 Z/OS

In an attempt to build a .net program that takes advantage of ID propagation in Z/OS for RACF. We are trying to connect to DB2 on Z/OS from a Windows client using DB2 connect. Specifically, we are trying to create a trusted connection with the IBM Data Server Provider for .NET.

The problem that we are having is that DB2 doesn't understand that we are passing it a distributed ID. This is because in order for DB2 to understand that a distributed ID is being used a registry must be passed as well. There is no keyword option for this in the connect string for .net.
Example from:
http://www-01.ibm.com/support/knowledgecenter/SSEPGG_10.5.0/com.ibm.swg.im.dbclient.adonet.doc/doc/c0053347.html?lang=en

database=db;server=server1:446;
UserID=userapp1;Password=passapp1;
TrustedContextSystemUserID=masteruser;TrustedContextSystemPassword=masterpassword

We have all the other pieces turned on and functioning. We have verified with IBM that the trusted context is setup in DB2 properly. The RACF ID propagation facility class has been turned and the ID mapped. This is the one piece that we are missing.

Per the Redbook:
Identity Propagation for Z/OS page 35
DB2 10 for z/OS Identity Propagation works only in a trusted context. The end user's identity
consists of a distinguished name and registry name. Using a trusted connection, DB2 for
z/OS detects the registry name and allows the distributed identity to be passed onto RACF to
be mapped.

Also page 36:
The registry name is not verified by RACF, however, it must be supplied by the distributed
application, otherwise DB2 will not recognize the distributed identity and will be treated as a
normal RACF user ID.

Which is what we believe we are seeing when currently trying to connect without passing a registry. The program will work when passing a RACF ID, but when passing a distributed ID after the trusted connection has been made it tries to verify that the ID being passed is a RACF ID. Instead, it should be looking in the RACF map class for this distributed ID to be mapped to a RACF ID.

We need the ability to pass a registry to DB2 so that it will understand we are passing it a distributed ID. This ability is already available in Java.