Member name enqueue

To restrict concurrent use of a member of a partitioned data set while still allowing ISPF users to concurrently use different members of the same data set (such as through EDIT, Table Processing, File Tailoring, and library access services), ISPF issues this ENQ macro for the member:

      ENQ SPFEDIT,rname,E,52,SYSTEMS

where

rname: the data set name, length of 44, padded with blanks, followed by the member name, length of 8, padded with blanks

Note: When a member or a member generation in a PDSE version 2 data set that is configured for member generations is edited, enqueue processing restricts access to the member and all generations of the member.