Changing the CEI Distribution Mode

You can use the WebSphere® Application Server administrative console to change the Common Event Infrastructure (CEI) distribution mode for a version of a monitor model.

Before you begin

Before you begin this task, you must log on to the WebSphere Application Server administrative console.

About this task

The CEI distribution mode is a combination of the state of the monitor model and the transport type.

The possible states of a monitor model are:
- Active
- Active (no new MC instances)
- Inactive (event queue recoverable)
- Inactive
The transport types are:
- Queue-based event delivery. This method uses Java Messaging Service (JMS) to deliver events from CEI to the monitor model.
- Table-based event delivery (formerly known as queue bypass). This method uses a database table to deliver events from CEI to the monitor model. With table-based event delivery, the work can be distributed among multiple cluster members. For most environments, this method improves performance and simplifies the system configuration.
Note: The Inactive distribution mode is the same for both transport types.

The combination of the monitor model state and transport type results in the following possible distribution modes:

Table 1. Distribution modes
State	Definition	Queue-based	Table-based
Active	Events are processed and new monitoring context instances can be created as a result.	Active (Queue-based event delivery)	Active (Table-based event delivery)
Active (no new MC instances)	Events for existing monitoring context instances are processed, but events that would create new root monitoring context instances are ignored.	Active (Queue-based event delivery, no new MC instances)	Active (Table-based event delivery, no new MC instances)
Inactive (event queue recoverable)	Events are saved for a future monitor model version to process. The events are not processed by the current monitor model version.	Inactive (Queue-based event delivery, event queue recoverable)	Inactive (Table-based event delivery, event queue recoverable)
Inactive	Events are not distributed to this monitor model version.	Inactive	Inactive

See "Monitor model versions" for more information.

Procedure

In the WebSphere Application Server administrative console, click Applications > Monitor Models.
Click the version of the model whose CEI distribution mode you want to change.
Click Change CEI Distribution Mode.
Under Target, select how the version is to be configured to receive and process Common Base Events.
Click Apply or OK.