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Oracle Job Scheduling: Creating robust task management with dbms_job and Oracle 10g dbms_scheduler View Larger Image | Dr. Timothy S Hall
Rampant TechPress, Paperback, Published April 2005, 279 pages, ISBN 0974448664 | List Price: $16.95
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This unique book focuses on the use of internal utilities to schedule complex
Oracle database tasks. The book compares external job scheduling with UNIX cron
and Windows AT command, and shows the differences between the dbms_job and dbms_scheduler
utilities.
This indispensable reference shows working examples of how to schedule complex
time-based jobs, creating streams of multiple jobs, scheduling job streams with
intermediate error checking, scheduling of event-based jobs, and much, much
more.
- See the differences between cron, AT, dbms_job and dbms_scheduler
- See step-by-step instructions for implementing dbms_job and dbms_scheduler
- Learn how to create complex time-based job invocation.
- See real-world techniques for job coordination with dbms_job and dbms_scheduler
- Get working examples from the Oracle 10g dbms_scheduler utility
- Protect your Oracle job-stream integrity with error-checking code
- Create e-mails alerts for aborted job steps
- Get working scripts to display upcoming job status
Table of Contents
Chapter 1 - External Oracle job scheduling
Introduction
External Oracle job scheduling
Using cron and crontab in UNIX and Linux
Using the Windows job schedulers
AT.EXE
Scheduled Tasks Wizard
SCHTASKS.EXE
Internal Oracle job Scheduling
Oracle 9i Scheduler Overview
Oracle 10g Scheduler Overview
Features comparison between dbms_job and dbms_scheduler
Migrating from dbms_job to dbms_scheduler
Summary
Chapter 2 - Configuring Oracle Job Scheduling
Introduction
Setting up a test environment
Overview and examples of dbms_job functions
Data dictionary views related to dbms_job
dba_jobs
dba_jobs_running
Overview and examples of dbms_scheduler functions
Scheduler Privileges
Programs
Schedules
Jobs
Job Classes
Windows
Window Groups
Enabling, disabling and setting attributes of scheduler objects
Data dictionary views related to dbms_scheduler
Summary
Chapter 3 - Time-Based Job Scheduling
Introduction
Dates
Timestamps
Intervals and Interval Literals
Calendar Syntax in Oracle 10g
Complex Date Rules for Job Execution
Summary
Chapter 4 - Chaining Oracle Jobs Together
Introduction
Creating a job chain
Conditional job creation
Conditional job enabling
Conditional job runs using Oracle Advanced Queuing
Conditional job runs using a custom table solution
Implementing error checking routines
Implementing conditional job execution
Sending email notifications of job errors
Using UTL_SMTP
Using UTL_MAIL in Oracle 10g
Running OS commands and scripts from PL/SQL
Summary
Chapter 5 - Monitoring Oracle Job Execution
Introduction
Monitoring Jobs (pre 10g)
Monitoring Jobs in 10g
Monitoring Sessions
Killing Oracle Sessions
DBMS_APPLICATION_INFO
DBMS_SYSTEM
Summary
Chapter 6 - Advanced Scheduling Topics
Introduction
Setting Scheduler Attributes
current_open_window
default_timezone
log_history
max_job_slave_processes
Job Priorities
Scheduler Logging
Job Logs
Job Run Details
Window Logs
Purging Logs
Resource Manager
Export/Import and the Scheduler
Services and Instance Stickiness
Security
Setting Scheduler Object Attributes
Summary
About the Author
Dr. Tim Hall is an Oracle Certified Professional DBA (7.3, 8,
8i, 9i, 10g) and has been involved in DBA, design and development work with
Oracle databases since graduating from university in 1994 with a PhD in Molecular
Genetics.
Tim Hall has gained a wide knowledge of the Oracle software stack and has worked
as a consultant for several multi-national companies on projects ranging from
real-time control systems to OLTP web applications. Since 2000 he has published
over 200 articles on his website www.oracle-base.com covering a wide range of
Oracle features.
Tim has been a Karate black belt since 1993 and is a practitioner and qualified
teacher of Hatha and Ashtanga yoga. In addition he enjoys running, having completed
2002 London Marathon.
Customer Reviews
Customer Reviews: 1 Average Customer Rating: Jul 23, 2005 don@burleson.cc from Kittrell, NC
An excellent treatment of an important topic
As the editor for this book, I was honored to be able to observe and recommend important areas for this definitive book on Oracle Job Scheduling. Oracle job scheduling is critical to any Oracle shop and the DBA must be able to create complete DBA job streams for backups, redo log archiving and other database activities that require interfacing with the external environment. Dr. Hall notes that with Oracle10g there is no need to use UNIX/Linux crontab files any longer, and he also notes some of the important shortcoming of scheduling Oracle jobs in Linux, like the fact that dbms_scheduler will re-start a missed job (when the database has been down) while a crontab will not. Oracle job scheduling has always been super-complex, as we see within Oracles own applications products where a concurrent manager is used to interface with the dbms_job utility to schedule complex job streams. Its even more confounding when vendor applications (such as the ever-popular SAP) dispatch their own tasks independently from Oracle. Dr. Hall has an excellent section on setting-up an Oracle scheduling environment and he show the sophisticated features of Oracle scheduling including establishing job classes and granting scheduler privileges. But this handy book goes far beyond the basics, and Hall shared his real-world experience in chapters dedicated to time-based job scheduling (i.e. run this job every second Wednesday at 3:00 PM) and he shows working example that will save the reader many hours of manual computations. The real meat of Oracle Job Scheduling is where Dr. Hall explains the process of chaining jobs together with dbms_job and dbms_scheduler. Hall covers the most complicated aspects of Oracle job chaining including the conditional execution of Oracle tasks, and working examples that show how to create a robust jobstream with built-in error checking. He also includes details for job failure notification and shows how to alert the staff using the utl_smtp protocol package. But Hall does not stop there. He goes far beyond the Oracle documentation and shows working examples of using the new Oracle job monitoring features and the reader can see exactly how to use the Oracle job monitoring functions to monitor and kill scheduled Oracle tasks. Halls opens-up his personal experience in chapter 6, advanced scheduling Topics, and show never-before seen techniques for setting scheduler object attributes and the concept of Instance Stickiness. Dr. Hall has a long history of explain complex Oracle concepts with clear, easy-to-understand examples, and this book is no exception. Hall is provided an online code depot, replete with working examples of complex job streams, an invaluable time-saver for the Oracle professional. I also like the price, as Im getting weary of shelling-out $50 for mediocre Oracle books and its refreshing to see that Rampant can offer a high-quality 288-page Oracle book for only $9.95 My copy of Oracle Job Scheduling is already filling-up with dog-eared pages and post-it notes, a sure sign that other Oracle professionals are going to find this book to be an addition to their Oracle libraries that they will actually use everyday.
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