Availability Guide for Application Design

Availability in the Pathway Transaction-Processing
Environment
Availability Guide for Application Design—525637-004
6-9
What Is Pathway/XM?
The PXMCOM process provides:
•
Creation of instances of NonStop TS/MP objects such as a logical node of multiple
processors
•
Configuration management and operational management of multiple instances of
objects such as PATHMON processes, in place of the PATHCOM process
•
Request queuing and queue management
•
Statistics gathering from multiple Pathway/XM objects
•
Automatic load balancing during failover conditions
The SuperCTL file contains descriptions of the objects managed through PXMCOM
and is created offline using a batch utility.
Figure 6-3. The Role of Pathway/XM in the Pathway Transaction-Processing
Environment
PATHMONs
LINKMONs
TCPs
Direct Server
Classes
PXMCOM
SuperCTL
HP NonStop TS/MP Environment
Pathway/XM Environment
Workstations
and Terminals
Databases
$CMON
PB
Distributed
Server
Classes
LCS
PB
VST503.vdd