Mastering Oracle Scheduler in Oracle 11g Databases


Mastering Oracle Scheduler in Oracle 11g Databases
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  • Automate jobs from within the Oracle database with the built-in Scheduler
  • Boost database performance by managing, monitoring, and controlling jobs more effectively
  • Contains easy-to-understand explanations, simple examples, debugging tips, and real-life scenarios

Book Details

Language : English
Paperback : 240 pages [ 235mm x 191mm ]
Release Date : June 2009
ISBN : 1847195989
ISBN 13 : 9781847195982
Author(s) : Ronald Rood
Topics and Technologies : All Books, Enterprise Products and Platforms, Oracle Database, Enterprise, Oracle


Table of Contents

Preface
Chapter 1: Simple Jobs
Chapter 2: Simple Chain
Chapter 3: Control the Scheduler
Chapter 4: Managing Resources
Chapter 5: Getting Out of the Database
Chapter 6: Events
Chapter 7: Debugging the Scheduler
Chapter 8: The Scheduler in Real Life
Chapter 9: Other Configurations
Chapter 10: Scheduler GUI Tools
Index
  • Chapter 1: Simple Jobs
    • Creating a user
    • Running your Jobs
      • PL/SQL block
      • Stored procedure
      • Executable
      • Program
    • Defining arguments for your jobs
      • Metadata arguments
      • Normal application arguments
    • Summary
  • Chapter 2: Simple Chain
    • Jobs
    • Chains
    • Statuses
    • Chains and steps
    • Rules
    • Evaluation interval
    • Privileges
    • Steps to create a chain
    • Hands-on with chains
      • Programs
        • SHUTDOWN
        • COPYFILES
        • STARTUP
        • Program state
    • DB Console
      • Chain definition
    • Running the chain
    • Tricks with chains
    • Manipulating the running chains
    • Analyzing the chain
    • Summary
  • Chapter 4: Managing Resources
    • Resource consumer group
      • Creating resource consumer groups
    • Class
    • Plan
    • Window
    • Window groups
    • Monitoring
    • Problems with Resource Manager
    • Problems that Resource Manager solves
    • Summary
  • Chapter 5: Getting Out of the Database
    • Security
    • Installation on Windows
    • Installation on Linux
    • Upgrading the remote job agent
    • Silent install of the remote job agent
      • Base release
      • Patch to the latest available level
    • Preparing the database for remote agent usage
      • Verifying the XDB installation
      • Setting the HTTP port
      • Creating remote Scheduler objects
      • Setting registration password
    • Configuring a remote agent
      • Troubleshooting
    • Multiple agents on the same host
    • Credentials
    • Creating job—targeting Unix
    • Creating job—targeting Windows
    • Runtime observations of the remote Scheduler
    • Resource Manager
    • Summary
  • Chapter 6: Events
    • Monitoring job events
      • Events in chains
    • Event-based scheduling
    • Summary
  • Chapter 8: The Scheduler in Real Life
    • Statistics collection
      • The schedule_run procedure
      • The run procedure
      • The statob procedure
      • The drop_jobs procedure
      • Generating the jobs
      • Performing the analysis
      • Generating the scheduled run
    • Backups
      • Things that can scare you
      • Diving into the code
        • Reading the event queue
        • Scheduling for the HOT backups
        • Scheduling the DARC process
        • Scheduling the final BARC process
    • How to use the calendar
      • Tools
    • Summary
  • Chapter 9: Other Configurations
    • RAC
      • Job creation/modification
      • The job_class definition
    • Standby databases
      • Creating jobs in a logical standby database
      • Running jobs in a logical standby database
    • Summary

Ronald Rood

Ronald Rood has been an IT professional for over 20 years. His roots are in the Bull gcos8 mainframes where he played with assembly language until Oracle and UNIX came across his path. He eagerly joined the Oracle community and became a skilled innovating DBA and trouble shooter. Ronald's real power is in the combination of the rich UNIX world and Oracle. There is no such thing as a problem that can not be solved; it just might take a little time.

Next to C, PRO*C, lots of scripting languages and – of course – PL/SQL, he also speaks Dutch, English, German, and some French. In his private time that he shares with his family with two children he likes to take an occasional dive (from the sky), fly radio controlled models, ride recumbent, and work as a volunteer for a local Water Scouts group.

Currently Ronald is one of the Ciber oracle consultants in The Netherlands and cooperates in many projects for many large companies. Before writing this book Ronald wrote oracle related articles for the Dutch oracle user group magazine. On his blog you can find some short articles about various items, mostly oracle related.

Ronald Rood has been interviewed by Oracle about Oracle Scheduler. Listen to it here here.

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Sample chapters

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What you will learn from this book

  • Create simple as well as complex jobs and schedule their execution according to your specific needs
  • Manage jobs independently of any particular platform so that they can be moved from one system to another easily
  • Create chains to link related programs, based on contingent outcomes
  • Flag the Scheduler to raise events when unexpected events occur
  • Manage logs to find out when jobs ran and analyze the runtime behavior based on recorded execution times
  • Combine your resource manager and Scheduler to get maximum throughput for managing thousands of jobs at a time
  • Run jobs on machines that do not have a running database using the remote job agent
  • Learn to debug jobs and make sure jobs run as expected

Here is brief summary of what each chapter covers:
Chapter 1 – Simple Jobs
The goal of this chapter is to get you, as quick as possible, going with the Scheduler. In the end you will automate simple tasks that are now maintained in for example cron, task manager, or the good old DBMS_JOB package.

Chapter 2 – Simple Chain
In this chapter you will see lot of possibilities of chains with many examples and explanations. In short, all you ever wanted to know about chains but were afraid to ask.

Chapter 3 – Control the Scheduler
For you people, living in an organization that requires strict job separation, this chapter will show how to make good use of the Scheduler and apply job separation.

Chapter 4 – Managing resources
This is a very important chapter that explains how to crank up the power of a system to the limits by combining the Scheduler and resource manager. Here you will find how to get the best out of your system.

Chapter 5 – Getting out of the database
This chapter will be of great help in setting up remote external jobs, introduced in oracle 11g. How is this related to the old fashioned local external jobs that we have got to know since oracle 10g and why we should get rid of the old external jobs? Get your answers here.

Chapter 6 – Events
This chapter helps the reader to get a firm grip on events and explains how to make good use of events. Events sound like voodoo, but in the end are an extra tool found in the Scheduler.

Chapter 7 – Debugging the Scheduler
When the jobs get more complicated it gets harder to understand why something works out differently than planned. This chapter gives the reader a new look at how to follow and debug Scheduler jobs.

Chapter 8 – The Scheduler in Real Life
Here you will find some creative implementations of more or less common tasks – this time implemented using the Scheduler. This chapter gives working code with clear explanations. This broadens the horizon and will take down barriers that might exist between other environments and oracle.

Chapter 9 – Other configurations
This chapter shows how the Scheduler can be used in other configurations like standby databases and RAC.

Chapter 10 - Working remotely
This chapter shows how the Scheduler can be managed and monitored remotely through a web interface.

In Detail

Scheduler (DBMS_SCHEDULER) is included in Oracle Database and is a tool for the automation, management, and control of jobs. It enables users to schedule jobs running inside the database such as PL/SQL procedures or PL/SQL blocks, as well as jobs running outside the database like shell scripts. Scheduler ensures that jobs are run on time, automates business processes, and optimizes the use of available resources.

You just need to specify a fixed date and time and Scheduler will do the rest. What if you don't know the precise time to execute your job? Nothing to worry about, you can specify an event upon which you want your job to be done and Scheduler will execute your job at the appropriate time. Although scheduling sounds quite easy, it requires programming skills and knowledge to set up such a powerful, intelligent scheduler for your project.

This book is your practical guide to DBMS_SCHEDULER for setting up platform-independent schedules that automate the execution of time-based or event-based job processes. It will show you how to automate business processes, and help you manage and monitor those jobs efficiently and effectively. It explains how Scheduler can be used to achieve the tasks you need to make happen in the real world. With a little understanding of how the Scheduler can be used and what kind of control it gives, you will be able to recognize the real power that many known enterprise-class schedulers – with serious price tags – cannot compete with.

You will see how running a specific program can be made dependent on the successful running of certain other programs, and how to separate various tasks using the built-in security mechanisms. You will learn to manage resources to balance the load on your system, and gain increased database performance.

A practical guide for Database Administrators and Developers to setting up enterprise class job scheduling

Approach

This is your practical guide to setting up a working environment and using Oracle Scheduler. Packed with simple examples and clear explanations, real-life scenarios are discussed to make you comfortable in implementing them in your own system.

Who this book is for

This book is intended for Administrators and Developers who currently use tools like cron, DBMS_JOB, and the task manager, but who now want more control or who have a need to scale up to tools that can handle the network. Complex tasks can be built that easily control business process and enable the completion of important tasks in limited time.

The reader is expected to have some experience of Oracle Database Management, and a working knowledge of SQL and PL/SQL.

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