You can run the same workload on fewer
regions than in previous releases, providing the opportunity for cost
savings through consolidation.
Change to the maximum number of tasks
The maximum number of user tasks that can exist in a CICS region at the same time is
increased from 999 to 2000. The minimum value is increased from 1
to 10, and the default value is increased from 5 to 500. The changes
mean that a CICS region operates
more efficiently with the default setting and can process more workload,
so the need to increase the number of CICS regions
is reduced.
Reduced use of 24-bit storage by CICS
Several elements of the CICS infrastructure
now use 31-bit (above-the-line) storage in the CICS region, in place
of 24-bit (below-the-line) storage. Lowering the demands on 24-bit
storage helps avoid short-on-storage conditions and can reduce the
need for additional CICS regions.
Changes in CICS storage use from 31-bit to 64-bit storage
Several CICS facilities
now use 64-bit (above-the-bar) storage in the CICS region, in place of 31-bit (above-the-line)
storage. These changes increase the virtual storage available for
your existing and new applications to operate in 31-bit storage.
Choice of global work area storage location for user exit programs
When you enable a global user exit program or task-related
user exit program, you can now select the location for the storage
that CICS provides as a global work area for the exit. The global
work area can be in 24-bit storage or in 31-bit storage.
Threadsafe extensions
The CICS transient data facility and more API and
SPI commands have been made threadsafe, to increase throughput and
reduce CPU usage for threadsafe applications that make use of them.
Loading programs using an open TCB
When an application that is currently running on an open
TCB issues a command that loads a program, CICS no longer switches to the RO (resource-owning)
TCB to load the program. Instead, CICS loads the program load on the open TCB.
Support for 64-bit Java 7
CICS Transaction
Server supports Java 7 which is the latest version of the Java language
specification. Java 7 provides a range of benefits aiming to help
developers with ease of writing and optimizing Java code.
64-bit application support to access large data objects CICS Transaction Server supports
non-Language Environment (LE) assembler language programs that run
in 64-bit addressing mode (AMODE(64)), thus providing 64-bit application
support to access large data objects.
Last updated: Thursday, 27 June 2019