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  • Book Overview & Buying Oracle BAM 11gR1 Handbook
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Oracle BAM 11gR1 Handbook

Oracle BAM 11gR1 Handbook

By : Pete Wang
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Oracle BAM 11gR1 Handbook

Oracle BAM 11gR1 Handbook

4 (7)
By: Pete Wang
Buy this Book

Overview of this book

An integral component of Oracle SOA and BPM Suite, Oracle BAM (Business Activity Monitoring) ultimately empowers business executives to react quickly to changing business situations. BAM enables business service and process monitoring through real-time data streaming and operational reports, and this book helps you to take advantage of this vital tool with best practice guidance for building a BAM project."Oracle BAM 11gR1 Handbook" is an essential companion for advancing your BAM knowledge, with troubleshooting and performance tuning tips to guide you in building BAM applications. The book uses step-by-step instructions alongside a real world demo project to steer you through the pitfalls of report and application development. Packed with best practices, you'll learn about BAM migration, HA configuration and much more."Oracle BAM 11gR1 Handbook" comprises a myriad of best practices for building real-time operational dashboards, reports and alerts. The book dives straight into the architecture of Oracle BAM 11g, before moving swiftly onto concepts like managing BAM server securities, populating Data Objects and performing load testing. Later on you'll also learn about BAM migration and building an ADF-based report, plus much more that you won't want to miss. For focusing in on best practices for this integral tool within Oracle SOA and BPM Suite, "Oracle BAM 11gR1 Handbook" is the perfect guide for the job.
Table of Contents (18 chapters)
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Oracle BAM 11gR1 Handbook
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Oracle BAM 11gR1 Handbook
Credits
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Credits
Foreword
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Foreword
About the Author
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About the Author
Acknowledgement
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Acknowledgement
About the Reviewers
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About the Reviewers
www.PacktPub.com
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www.PacktPub.com
Preface
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Preface
Lock Free Chapter
1
BAM 11gR1 Architecture
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BAM 11gR1 Architecture
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Oracle BAM key concepts
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BAM 11gR1 architecture
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Understanding message flow
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Summary
2
Designing Your First Data Objects and Reports
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Designing Your First Data Objects and Reports
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Designing your first Data Objects
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Using ICommand to import Data Objects
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Building your first report
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Summary
3
Populating Data Objects with Real-time Data
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Populating Data Objects with Real-time Data
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Using the Oracle BAM Adapter
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Using BPEL sensors
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Using Enterprise Message Sources
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Using Oracle BAM Web services
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Summary
4
Designing BAM Reports
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Designing BAM Reports
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Designing a report that contains a single View
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Extending your report to include multiple Views
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Enabling BAM alerts
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Summary
5
Testing BAM Applications
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Testing BAM Applications
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Introducing BAM testing methodologies
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Testing BAM Data Objects
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Testing BAM report Views
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Performing end-to-end testing
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Summary
6
Managing BAM Securities
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Managing BAM Securities
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Managing BAM authentication
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Managing BAM authorization
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Configuring SSL for BAM
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Summary
7
Migrating BAM to a Different Environment
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Migrating BAM to a Different Environment
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Cloning Oracle BAM
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Performing data migration
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Summary
8
Configuring High Availability for BAM
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Configuring High Availability for BAM
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Preparing your HA environment
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Configuring a WebLogic Server domain for BAM HA
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Configuring server migration
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Summary
9
Troubleshooting your BAM Applications
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Troubleshooting your BAM Applications
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Understanding BAM logging and troubleshooting methodologies
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Troubleshooting the BAM applications
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Summary
10
Building your Reports Using ADF
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Building your Reports Using ADF
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ADF — an overview
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Designing your BAM report using ADF
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Summary

Understanding message flow

In this section, we will dive into the BAM server components to help you to understand what happens behind the scenes in the following scenarios:

  • Opening a report for the first time
  • Processing Active Data

Opening a report for the first time

This is the scenario when a user attempts to open a report for the first time.

Opening a report for the first time

This diagram depicts the message flow, which can be interpreted as follows:

  1. The client sends an HTTP request containing report definition ID and a list of parameters to the Report Server. An example request is something like:
    http://<bam_server_hostname>:<port>/OracleBAM/reportserver/default.jsp?Event=viewReport&ReportDef=58&Buttons=False&ReportParameters=()

    In this URL, <bam_server_hostname> is the BAM server hostname, ReportDef is a parameter that specifies the report ID, and ReportParameters is an HTTP request parameter that specifies report parameters.

  2. The Report Server processes the request, then invokes the Report Cache method to open a ViewSet.
  3. Since this is the first time a ViewSet is opened, the Report Cache invokes Active Data Cache APIs to create a ViewSet.
  4. The Active Data Cache instantiates the ViewSet, and registers it as a listener to the associated Data Object Notification Queue.
  5. The Active Data Cache builds and executes SQL queries, and returns the initial result set (Snapshot) to the Report Cache.
  6. The Report Cache saves the opened Viewset and associated Snapshot in the cache, and then passes the ViewSet and Snapshot to the Report Server.
  7. The Report Server transforms the Snapshot to DHTML, using View specific XSL, and sends it to the client along with JavaScript for rendering.
  8. After the initial View is rendered successfully in the web browser, the View generates a getChangeList() request, and sends it through HTTP POST to Report Server ActiveDataServlet.

Tip

Why does the client send a separate HTTP request to BAM Report Server after a View is rendered for the first time?

BAM report leverages a push-based mechanism to receive Active Data in real time. After a report is first rendered in a web browser, it has to find out a way to register the View to the Report Server, which maintains persistent connections between the client and BAM Server. Sending the getChangeList() request to ActiveDataServlet creates the persistent connection through which the Active Data changes are pushed.

Processing Active Data

Up to now, we have mentioned many times that BAM server uses the push-based mechanism to process Active Data. In this section, we will use a diagram to illustrate how Active Data are processed by BAM server components:

Processing Active Data

As shown in this diagram, Active Data processing message flows are as follows:

  1. The Active Data Cache receives a data change Event (Insert, Update, Upsert, and Delete) that happens to one of its managed Data Objects.
  2. The Active Data Cache persists the change to the repository, and raises an Event to notify the changes to ViewSet, which is listening on particular Events in the notification queue.
  3. The Active Data Cache calculates how the change is affecting the specific continuous query that it is running for the user, and in the end, it will generate a ChangeList, and push it through the Messaging Framework for asynchronous delivery.
  4. The Report Cache gets notified when the ChangeList arrives, consumes the XML payload through the Messaging Framework, and saves it into its internal cache.
  5. The Report Cache pushes the ChangeList to the Report Cache Channel, which is an internal or JMS topic.
  6. The Report Server receives the ChangeList from the Report Cache Channel.
  7. The Report Server sends the ChangeList to the client through the persistent connection established by ActiveDataServlet that you saw before.
  8. Client side JavaScript receives the ChangeList, and then updates the Views opened in the browser to reflect the changes in real time.
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