This document provides a workaround to publishing failures caused by database connection issues to the SUSDB when it is remote to the WSUS server.
You are unable to publish updates through SCCM, identifying the issue through the C:\Users\SCCMUser\Shavlik\Shavlik Patch\AutoPublish.log
Cannot Open database "SUSDB" requested by the log... Login failed for user
The account used to access SCCM doesn't have rights to the remote SUSDB.
You must add the following database rights to the SUSDB database for the account used access SCCM.