System operations
The tasks of starting, running, and stopping the MVS™ operating
system involve controlling the MVS system
software and most of the installation's hardware, including processors,
channel paths, and I/O devices. This information is for people who need reference
information about these tasks and the MVS system
commands. They include:
- Those who develop procedures for the daily operations, including system programmers and lead operators
- Operators who want to learn how to use a console to control MVS and how to change some of the console's characteristics
System planners and system programmers should refer to the z/OS MVS Planning: Operations for information on planning:
- System and sysplex operation management
- MCS (multiple console support) consoles
- HMCS (HMC multiple console support) consoles
- SMCS (SNA multiple console support) consoles
- Extended MCS (Extended multiple console support) consoles
This topic describes how to operate an MVS system using MVS system commands. Subsystem (JES2 or JES3) commands can perform many of the same functions as MVS system commands but are described in z/OS JES2 Commands and z/OS JES3 Commands.
The tasks of operating the MVS system that are described in
this topic include:
- Starting, loading, and initializing the system
- Controlling the system
- Controlling time-sharing
- Controlling jobs
- Controlling started tasks
- Controlling system information recording
- Controlling automatic tape switching
- Interacting with system functions
- Command flooding
- Setting up hardware event data collection
- Accessing the output from a hardware event data collection run
- Responding to failing devices
- Quiescing the system
- Stopping the system
- Recovery from hardware problems
Controlling MVS involves issuing commands on a console and
responding to messages that appear on the console screen. Other books
that describe controlling MVS include:
- z/OS MVS JCL Reference, which documents two job control language statements (the COMMAND statement and the JCL command statement) that you can use to enter system commands through the input job stream.
- z/OS MVS Planning: Operations, which contains information about using MCS, HMCS, SMCS and extended MCS consoles as well as MVS message and command processing.
- z/OS MVS Planning: Global Resource Serialization, which contains information about controlling a global resource serialization (GRS) ring.