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current multi-server domain configuration history when the Oracle CEP server has synchronized with the primary.
3.4.5.2 Simultaneous Updates
Oracle CEP does not support simultaneous configuration updates from more than one Oracle CEP server in a multi-server domain.
Make configuration changes from one Oracle CEP Visualizer instance on one node in the multi-server domain.
4
Managing the Event Processing Network 4-1
4
Managing the Event Processing Network
This section contains the typical application tasks you can perform with Oracle CEP Visualizer to manage the Event Processing Network EPN of a deployed Oracle CEP
application, including:
■
Section 4.1, Viewing the EPN of an Application
■
Section 4.2, Viewing and Editing the Configuration of a Stage
■
Section 4.3, Recording and Playing Back Events in the EPN
■
Section 4.4, Tracing and Injecting Events in the EPN
■
Section 4.5, Monitoring a Channel Stage in the EPN
■
Section 4.6, Monitoring the Throughput and Latency of a Stage or Path in the EPN
For more information, see Section 3.1, Event Processing Network EPN
Management .
4.1 Viewing the EPN of an Application
Using the Oracle CEP Visualizer, you can view the EPN of a deployed application.
4.1.1 How to View the EPN of an Application
You can use the Oracle CEP Visualizer to view the EPN of a deployed application.
To view the EPN of an application: 1.
In the left pane, navigate to and expand the Applications node of the Oracle CEP instance to which the application is deployed.
2. Select appname, where appname is the name of the application whose EPN you
want to view.
3. In the right pane, click the Event Processing Network tab.
The Event Processor Network panel is displayed as Figure 4–1
shows.
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Figure 4–1 Event Processing Network Panel
The name of a stage appears above the stage in black text. For example, the first Oracle CQL processor is named FindCrossRates and the name of its inbound
channel is FxQuoteStream.
The name of the event type transmitted on a given channel is shown above the connecting line in blue text. For example, the event type transmitted on the
FxQuoteStream is StockTick.
4.
To navigate to areas of the EPN that are off the screen, click in the miniature EPN view, and drag.
5.
To change the layout of the EPN, select a layout option from the Layout menu:
■
organic
■
tree
■
hierarchic default
■
balloon
■
orthogonal
6.
To change the way the EPN fits in the browser window:
a. Click on the Zoom slider and drag to the right to increase the zoom level; drag
left to decrease the zoom level.
b. Click the Fit Content button to automatically adjust the zoom level to make all
of the EPN visible in the browser window; click the Actual Size button to reset the zoom level to zero.
c. Click the Zoom Out + button or Zoom In - button.
Managing the Event Processing Network 4-3
4.2 Viewing and Editing the Configuration of a Stage
Using Oracle CEP Visualizer, you can view the configuration of any stage and change the configuration for some stages.
4.2.1 How to View and Edit the Configuration of a Stage
You can view and change the configuration of a stage using the Oracle CEP Visualizer.
To view and edit the configuration of a stage: 1.
In the left pane, navigate to and expand the Applications node of the Oracle CEP instance to which the application is deployed.
2. Select appname, where appname is the name of the application you want.
3. Select the stage you wish to view and configure:
a. To use the EPN diagram:
– Click the Event Processing Network tab.
– Double-click the stage you wish to view or Right-click the stage and select
Open Panel
.
b. To use the domain tree:
– Expand the appname Stages node, where appname is the name of the
application you want to view.
– Click the stage you wish to view.
– In the right pane, click the General tab
The stage’s configuration appears. For example,
Figure 4–2 shows the General tab for a channel.
Note: Any changes to rules and Oracle high availability adapters are
propagated to the other servers in the same group. That is, all rule and and Oracle high availability adapter configurations is automatically
synchronized. Other configuration changes are not synchronized. For example, if you change recordplayback or JMS adapter configuration
on one server in a multi-server domain, then these changes are not synchronized with the other servers in the same group. For more
information, see
Chapter 18, Managing Multi-Server Domains
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Figure 4–2 General Tab for Channel Stage: Before Clicking Edit
For a description of the configuration properties for each possible stage, see:
■
Section 4.2.1.1, Channel Properties
■
Section 4.2.1.2, Channel Properties: Outbound Channel
■
Section 4.2.1.3, Channel Properties: Outbound Channel With Query Selector
■
Section 4.2.1.4, Stream Properties
■
Section 4.2.1.5, Oracle CQL Processor Properties
■
Section 4.2.1.6, EPL Processor Properties
■
Section 4.2.1.7, Adapter Properties
■
Section 4.2.1.8, JMS Adapter Properties
■
Section 4.2.1.9, Oracle CEP High Availability Input Adapter Properties
■
Section 4.2.1.10, Oracle CEP High Availability Buffering Output Adapter Properties
■
Section 4.2.1.11, Oracle CEP High Availability Broadcast Output Adapter Properties
■
Section 4.2.1.12, Oracle CEP High Availability Correlating Output Adapter Properties
■
Section 4.2.1.13, Event Bean Properties
■
Section 4.2.1.14, POJO Properties
■
Section 4.2.1.15, Cache Properties: Oracle Coherence Cache
■
Section 4.2.1.16, Cache Properties: Oracle CEP Local Cache
4. Click the Edit button, if present.
Modifiable attributes become editable as Figure 4–3
shows.
Note:
Not all stages configuration can be updated by Oracle CEP
Visualizer. An Edit button will appear if the configuration can be updated.
