High-speed sequential processing (HSSP)

High-Speed Sequential Processing (HSSP) is a function of Fast Path that handles sequential processing of DEDBs.

Benefits of the HSSP function
The high-speed sequential processing (HSSP) function provides a number of benefits.
Limitations and restrictions when using HSSP
Though HSSP can execute in a mixed-mode environment as well as concurrently with other programs, and in an environment with global sharing using IRLM; a program using HSSP can only execute as a non-message-driven BMP.
Using HSSP
To use HSSP, you must specify PROCOPT=H during PSBGEN.
HSSP processing option H (PROCOPT=H)
PROCOPT=H is a PSBGEN OPTION. It allows you to define whether processing, with respect to a PCB, should be treated as an HSSP process.
Image-copy option
Selecting the image-copy option with HSSP reduces the total elapsed times of DEDB updates and subsequent image-copy operations.
UOW locking
In a globally shared environment, data is shared not only between IMS subsystems, but also across central processor complexes (CPC).
Private buffer pools
HSSP jobs use a combination of utility private buffers and common buffers (NBA/OBA), with the utility private buffers being primarily used.

Parent topic: Designing Fast Path databases