To determine an automatic logon relationship, use the DISPLAY ID=(SLUname),E command. Use this command to determine whether a logical unit or TN3270 application has a controlling primary logical unit. Message IST1131I contains the name of the primary logical unit. Message IST635I contains the name of the session partner, the status of the session, and other session information. The status of the session will have the last two characters overlaid with /C if this session is because of an automatic logon relationship.

The DISPLAY AUTOLOG command displays controlling applications for which there are one or more LUs in this host that are session capable but that are not currently in session with their controlling application. The command can also be used to list SLUs that are in this state. The PLU name is displayed in messages that include the events that automatically attempt to re-establish sessions between the controlling application and the SLUs that have pending automatic logon requests.