Sun Microsystems iPlanet Integration Server 3.0, Process System Manual

Page: 113 / 368

Reconfiguring an Engine
Chapter 4 Managing Engines 113
Reconfiguring an Engine
An engine’s component partitioning and startup properties are stored in its engine
configuration file, which is read at engine startup time. To reconfigure an engine
you modify the configuration file and restart the engine. Some limited
reconfiguration, such as modifying the logging of historical state information, can
be performed dynamically: you do not have to restart the engine (see
“How to
Dynamically Modify Database Logging” on page 115 ).
Most reconfiguration involves modifying engine component partitioning to
accommodate changing load on an engine or component failure. For example, if
the load on your engine increases, you might have to start up additional database
services, or if a primary engine unit fails (say, the server blows up), you might have
to start up an additional engine unit to serve as backup to the failover primary.
In these cases, you must modify your engine configuration file, in the first case to
include additional database services, and in the second case to put an engine unit
on a different server node.
How to Reconfigure an Engine
You can statically reconfigure an engine whether or not it is currently ONLINE,
either by editing the engine configuration file manually or by using the iIS Console
as follows:
➤
To reconfigure an engine
1.
Select an engine in the iIS Console main window.