Autologon

Instead of using the SHARE option on the TERMINAL macro to request that IMS automatically initiate a terminal session when output is available, ETO offers autologon support for ETO terminals and users. You specify autologon parameters when defining the user to IMS.

Definition: Autologon allows IMS to log on and sign on your terminal automatically. If you specify the autologon option for a user, the queuing of data to any of the user queues causes IMS to establish a session. You can specify autologon using:

  • AUTLGN= parameter on the user descriptor
  • Destination Creation exit routine (DFSINSX0)
  • Signon exit routine (DFSSGNX0) for associated printers
  • /CHANGE command with the AUTOLOGON keyword

Autologon includes both automatic logon and automatic signon. At restart, IMS attempts to start sessions with those terminals that are defined with autologon and that have queued data waiting. After the session is established, IMS automatically signs on the terminal. If a queue of waiting users exists and the allocated queues are drained, the autologon user is signed off, regardless of an existing ASOT value.

IMS manages a serial queue of waiting users if more than one user is contending for the same autologon terminal. After the autologon user is signed off, the next autologon user for the same terminal is automatically signed on. When all autologon users have signed off, the terminal is free to begin its ALOT cycle in order to terminate the session.

Autologon replaces the TERMINAL macro OPTIONS=SHARE for static terminals. OPTIONS=NOASR (no automatic session restart) on the logon descriptor is ignored for autologon printers. IMS always assumes OPTIONS=ASR for autologon printers.

Autologon is normally specified for output-only terminals. Autologon and occasional users generally do not share the same terminal session, but sharing terminal sessions is possible for interactive terminals. Interactive users on terminals that are subject to autologon must supply user signon data with the session initiation request (logon) in order to avoid contention with autologon output. Occasional terminal users can use autologon in order to have output delivered to default terminals when the output becomes available after signoff. If a terminal is stopped, the /START NODE command does not start a session. The /OPNDST NODE USER command can be used to restart the session.