Purpose of this information
This information
primarily describe messages that are issued to the system operator
at the system console and system messages that are logged. These include:
- Operator messages issued by the BCP and DFSMS/MVS.
- Log messages issued by the BCP and DFSMS/MVS.
- Some SYSOUT messages issued by the BCP and DFSMS/MVS.
SYSOUT messages are issued by utilities that normally run in batch,
such as SPZAP.
- Batch job messages issued by the BCP. Messages issued by JES2
or JES3 for batch jobs are in the JES messages documents.
For the most part, messages issued at interactive terminals (like
TSO/E and CICS® terminals) are documented by the specific
elements and products that support those terminals.
This information
also contains the routing and descriptor codes that IBM® assigns
to the messages that z/OS® components, subsystems, and
products issue. Routing and descriptor codes are specified by the
ROUTCDE and DESC keyword parameters on WTO and WTOR macros, which
are the primary methods that programs use to issue messages. The routing
code identifies where a message will be displayed. The descriptor
code identifies the significance of the message and the color of the
message on operator consoles with color.
Who should read this information
The system
messages documents are for all people who receive messages from the
system. Usually, these people are system operators, system programmers,
and application programmers who do any of the following tasks:
- Initialize the operating system and its subsystems
- Monitor system activity
- Keep the system running correctly
- Diagnose and correct system problems
- Diagnose and correct errors in problem programs
Where to find the most current message information
The MVS™ System
Messages documents are cumulative. As messages are added to the system,
they are added to the documents. Similarly, when messages are changed
on the system, they are changed in the documents. However, when a
message is deleted from the system (no longer issued), the message
is not deleted from the document. This means that users can
look in the most recent message documents for the most current descriptions
of system messages.