Dramatically Reduce the Cost of Sequential File Accesses in CICS

Reduce the cost of multiple accesses to sequential files in CICS, from hundreds or thousands of machine instructions down to just 3 for a READNEXT or less than 40 for a DELETE or a new WRITE - and new records can be inserted anywhere in the file.  A REWRITE can even be achieved with no overhead at all as long as some simple coding guidelines are followed. An extremely efficient approach to sequential file-handling online, using 64 bit storage above the bar, while remaining thread-safe for non-update READs and even providing a thread-safe option for updates as well, with just a little more overhead.

Tracks: Application Development, CICS Systems Programming, Data Center and IT Management and Software Architecture