SDSF
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The System Display and Search Facility (SDSF) feature of IBM mainframes running z/OS allows users and administrators to be able to view and control various aspects of the mainframe's operation. Batch job output, status of running Unix processes, system information, workload scheduling, and log files can be accessed through SDSF.
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[edit] Features
Some of the options available are:
- LOG: To see the current log of system activity.
- DA: "Display Active" or running processes.
- I: Input Queue - shows jobs waiting execution.
- H: Jobs on HOLD - either waiting to be released into Input or Output or actual copies of job JCL (Job Control Language) or previously executed jobs.
- ST: Displays current status of all jobs
- PR: Displays printers.
- INIT: Displays Initiators (areas where jobs execute or run).
- O: Output Queue
- LINE: Network Job Entry (NJE) Lines
- SR: System Requests
- MAS: Members in a MAS (Multiple Access Spool)
- JC: Job Classes
- PS: z/OS UNIX Processes
- RES: WLM (WorkLoad Manager) Resources
- ENC: Enclaves
- SE: Scheduling Environments
- PUN: Punches
- RDR: Readers
- NODE: NJE (Network Job Entry) Nodes
- SO: Spool offload
- SP: Spool volumes
- RM: Resource monitor
- CK: Health checker
- ULOG: User session log
[edit] History
SDSF was originally known as SPOOL Display and Search Facility - when it was a field-developed program offering. The word SPOOL was changed to System when it became a program product in the late 1980s.
With z/OS Release 9 SDSF supports a REXX interface, allowing batch programs to use SDSF facilities. This support includes stem variables containing SDSF-originated information.
Prior to z/OS Release 10, SDSF was only supported for use with JES2 and not JES3, although there were ISV products available with similar functionality for JES3. At and beyond z/OS Release 10 JES3 is now fully supported, with some new commands (JDS and ODS) to display the data/sets and job output for JES3 jobs.[1]
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