JCA Adapter Basic Tuning Considerations
18.1 About Oracle Business Activity Monitoring
Oracle Business Activity Monitoring BAM provides the tools for monitoring business services and processes in the enterprise. It allows correlating of market indicators to the actual business process and to changing business processes quickly or taking corrective actions if the business environment changes. Oracle BAM also provides the necessary tools and run-time services for creating dashboards that display real-time data inflow and define rules to send alerts under specified conditions. For more information see Oracle Fusion Middleware Users Guide for Oracle Business Activity Monitoring.18.2 Basic Tuning Considerations
The following sections provide Oracle BAM tuning considerations that can be used to address performance issues: ■ BAM Server Tuning ■ BAM Dashboard Tuning ■ BAM Database Tuning ■ Internet Browser Tuning ■ Enterprise Message Source Tuning18.2.1 BAM Server Tuning
The following tuning configurations can be used to improve performance of the BAM Server: 18-2 Oracle Fusion Middleware Performance and Tuning Guide18.2.1.1 Set the ViewSetSharing and ElementCountLimit Parameters
The ViewSetSharing parameter can be set to TRUE or FALSE in the BAM server configuration file. This parameter enables view set sharing when possible. Typically a particular view set can be shared with other users if they are trying to access the same dashboard, if the view sets are not dissimilar due to factors like row level security or promptsparameters tied to filters. Consider setting the ViewSetSharing parameter to TRUE so that Active Data Cache ADC can reuse the same viewset and snapshot and avoid creating more viewsets. This reduces the BAM server resource usage and improves user response time. If this parameter is turned on, it does not always guarantee that ADC can reuse the existing viewset. If there have been too many changes to the underlying snapshot for the existing viewset, ADC may choose to create new viewset instead. The ReportCache parameter used to determine if there have been too many changes is ElementsCountLimit. This defines the number of changes to the snapshot used by Report Cache to do the determination. In cases where the active data comes in at a fast rate, try to set this parameter to a large number so that ADC can use view sharing at the expense of more server CPU usage. The default value of ElementsCountLimit is 50.18.2.1.2 Enable the Async Servlet
During periods of higher active data rates, the browser uses more memory. To prevent potential impacts to performance, consider providing more memory on the client machine. To do this, set the UseAsynchServlet=TRUE for the BAM dashboard application. The BAM dashboard application uses the Async servlet feature so that the BAM server does not bind a specific thread to a specific user request. This provides for better server-side system resource usage. This parameter can be turned off by adding UseAsynchServlet=FALSE in the server configuration file. During debugging, consider turning it off to make the process easier. Otherwise this should always be turned on, which is the default. See Creating the Dashboard View in Oracle Fusion Middleware Users Guide for Oracle Business Activity Monitoring.18.2.2 BAM Dashboard Tuning
This section provides information on tuning the BAM dashboard for performance.18.2.2.1 Tune the Active Data Retrieval Interval
The Active Data Retrieval Interval parameter controls the rate in milliseconds at which the Oracle BAM Active Data Cache ADC pushes events to the Oracle BAM Report Server. This is one of the factors that can affect the frequency of viewing active events on the dashboard page. Increasing this interval reduces the load on the Oracle BAM Server. Note that larger intervals increase the likelihood of multiple updates in the dashboard collapsing into a single update. The default ADCPushInterval value is 1 second. You can override the default ADCPushInterval value within a particular report using the Active Data Retrieval Interval property in Active Studio. Oracle Business Activity Monitoring Performance Tuning 18-3 For more information on using Active Studio, see Getting Started With Oracle BAM Active Studio in Oracle Fusion Middleware Users Guide for Oracle Business Activity Monitoring.18.2.3 BAM Database Tuning
To achieve the best performance for Oracle Business Activity Monitoring, consider maintaining a database on its own hardware dedicated to the Oracle Business Activity Monitoring system. General database administration practices, as described in the Oracle Database Performance Tuning Guide, also apply to a database dedicated to Oracle Business Activity Monitoring. For more information on general database configurations, see Section 2.6, Tune Database Parameters .18.2.4 Internet Browser Tuning
This section provides performance tuning configurations for Internet browsers:18.2.4.1 Set iActiveDataScriptsCleanupFactor
BAM sends active data in script blocks to the browser over a persistent connection. In some cases, the browser does not free up the memory used by the script blocks. This can impact dashboard performance over time. The iActiveDataScriptsCleanupFactor parameter provides a solution for these memory issues. A periodic browser refresh is forced after receiving the specified number of characters. The issue may become apparent when active data is being sent to the dashboard at a fast pace. You may need to increase this value further for particularly high rates of data such as when active data is coming to the dashboard at a rate of 25 events per second or greater. Ultimately the value you set depends on factors like your data, number of views, number of viewsets, ADCPushinterval, and so on. You can monitor the browser’s memory consumption to help determine an appropriate value. If performance continues to be an issue, consider increasing the value for this parameter. For example, set the value to 2 or 3 times the default value if active data is predicted to increase. The default value for this parameter is 1048576 bytes. The default value often prevents frequent reconnects and prevents CPUmemory on the client machine from creeping up too high.18.2.4.2 Set Browser Cache Settings
If you are using Microsoft Internet Explorer, consider setting the Browsing History Settings to Automatic. See the Microsoft Internet Explorer online help for more information.18.2.5 Enterprise Message Source Tuning
BAM Enterprise Message Source EMS provides inbound JMS connectivity to BAM. After setup, a BAM EMS instance can monitor JMS queuestopics and read data from them. Each EMS instance is configured to publish data to a single Data Object in BAM Server. The Enterprise Message Source supports four types of operations: Insert, Update, Upsert, or Delete. Two types of JMS messages are supported: MapMessage and TextMessage.Parts
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» About Identifying Top Performance Areas
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» About SOA Suite Configuration Properties
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» Use Java Beans Basic Tuning Considerations
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» Choose the Right Workflow Service Client
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» Existence Checking Oracle JCA Adapter for Database Tuning
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