Query to check users who have been logging into the Erwin r9 Mart or who have current sessions running Matt Russo Updated June 30, 2017 20:39 Follow Select a.Username,b.S_Machine,b.S_Start,b.S_EndFrom m9User a,m9Session bWHERE a.UserId = b.U_Id Related articles Is there a query that will give me all the library, model, and table names for an r9.6 and later mart? erwin Data Modeler 9.7 Product Documentation gathering Usage statistics from the mart If I have erwin Data Modeler 32-bit and 64-bit, should I have the erwin MartServer 32-bit or 64-bit installed? I am unable to save my model changes after being logged into the mart for a couple of hours. I get the error, CA ERwin DM ! You do not have a valid Mart session to complete this operation. Comments 0 comments Please sign in to leave a comment.