Command Functions › LOCK Function—Lock Online Terminal

LOCK Function—Lock Online Terminal

Valid on z/OS, z/VSE, and z/VM.

Use the LOCK command function to lock a terminal so it cannot be used when unattended. The LOCK function is disabled if the NOLCFCHK attribute is attached to the ACID.

An attempt to use a locked terminal in:

• z/VM, IMS, CA‑IDMS/UCF, and CA‑Roscoe results in immediate termination of the command or transaction.
• CICS and CA‑IDMS/DC results in a prompt for the ACID's password. If the password is valid, the request is executed; if not, the request is terminated.

In TSO, the command takes affect when going from one program to another. In ISPF/EDIT, you can still use ACCESS and ALLOCATE with data sets to which you have access. The TSS LOCK command takes affect when you leave EDIT/BROWSE.

The LOCK command cannot be routed through the security network using the Command Propagation Facility (CPF).

This command function has the format:

TSS LOCK