Virtual Hometerm Subsystem (VHS) Manual (G06.24+, H06.04+, J06.03+)

Introduction to VHS
Virtual Hometerm Subsystem (VHS) Manual—429311-002
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VHS and the Application Environment
receives in its primary log file. VHS sends event messages to the EMS collector and
optionally to a console facility for display messages only.
VHS and the Application Environment
Configure your applications to send home terminal messages to VHS. When your
applications go into Inspect/eInspect or Debug prompt, VHS will handle the
Inspect/eInspect prompt automatically depending on the configuration otherwise, the
Inspect/eInspect prompt has to be handled manually.
VHS Components
VHS has three major components:
The VHS process receives messages of six types from many sources. They are, open
messages, display messages, Inspect/eInspect prompts, Debug prompts, application
prompts, and reply messages.
This table summarizes how VHS responds to messages and prompts.
VHS process Emulates a 6530 terminal.
VHS conversational
interface
(VHSCI)
Enables you to interact with and configure the VHS
process in a standard conversational interface.
VHS Browser Enables you to look at primary log file messages and
application prompts and to reply to application
prompts.
Type of message VHS Action
Open message Determines the object file of the process and acts accordingly
Display messages Saves the message in the text part of an EMS event, sends the
event to the collector if configured to do so (see parameter
GENERATE-DISPLAY-EVENT), and logs the message in the primary
log file
Inspect/eInspect
prompts
Depending on the VHSINSP file and the AUTOMATIC-INSPECT-
PROCESSING parameter, VHS handles the Inspect/eInspect prompt
by sending commands found in the VHSINSP file. VHS also creates
a saveabend file to save the application's context and stops the
application, or VHS enables you to handle the prompt by writing to its
prompt file. VHS logs Inspect/eInspect messages in its primary log
file. VHS can also send EMS events to the collector if configured to
do so (see the GENERATE-INSPECT-EVENT parameter).