Oracle Database 11g: Administration Workshop I Volume - Student Guide D50102GC10 Edition 1.0 September 2007 D52684 L$ ® Authors Copyright © 2007, Oracle All rights reserved Priya Vennapusa Disclaimer James Spiller This document contains proprietary information and is protected by copyright and other intellectual property laws You may copy and print this document solely for your own use in an Oracle training course The document may not be modified or altered in any way Except where your use constitutes "fair use" under copyright law, you may not use, share, download, upload, copy, print, display, perform, reproduce, publish, license, post, transmit, or distribute this document in whole or in part without the express authorization of Oracle Maria Billings Technical Contributors and Reviewers Christian Bauwens Andy Fortunak The information contained in this document is subject to change without notice If you find any problems in the document, please report them in writing to: Oracle University, 500 Oracle Parkway, Redwood Shores, California 94065 USA This document is not warranted to be error-free Gerlinde Frenzen Restricted Rights Notice Steve Friedberg If this documentation is delivered to the United States Government or anyone using the documentation on behalf of the United States Government, the following notice is applicable: Sangram Dash Joel Goodman Magnus Isaksson Akira Kinutani Pete Jones Pierre Labrousse Gwen Lazenby Hakan Lindfors Srinivas Putrevu Andreas Reinhardt Ira Singer Jenny Tsai Editors Richard Wallis Amitha Narayan Graphic Designer Rajiv Chandrabhanu Publishers Nita Brozowski Michael Sebastian Almeida U.S GOVERNMENT RIGHTS The U.S Government’s rights to use, modify, reproduce, release, perform, display, or disclose these training materials are restricted by the terms of the applicable Oracle license agreement and/or the applicable U.S Government contract Trademark Notice Oracle is a registered trademark of Oracle Corporation and/or its affiliates Other names may be trademarks of their respective owners Managing Undo Data Copyright © 2007, Oracle All rights reserved Objectives After completing this lesson, you should be able to: • Explain DML and undo data generation • Monitor and administer undo data • Describe the difference between undo data and redo data • Configure undo retention • Guarantee undo retention • Use the Undo Advisor 10 - Copyright © 2007, Oracle All rights reserved Oracle Database 11g: Administration Workshop I 10 - Data Manipulation • Data manipulation language (DML) consists of the following SQL statements: – – – – INSERT UPDATE DELETE MERGE • DML always executes as part of a transaction, which can be: – Rolled back using the ROLLBACK command – Committed using the COMMIT command 10 - Copyright © 2007, Oracle All rights reserved Data Manipulation Data is manipulated, or modified, by the DML class of SQL statements: INSERT, UPDATE, DELETE, and MERGE These statements execute as part of a transaction, which starts with the first successful DML statement and ends with either a COMMIT or ROLLBACK command A transaction is either entirely committed or entirely rolled back In addition to the explicit COMMIT or ROLLBACK commands, they can also occur implicitly For example, rollback may occur if there is a process or system failure Commit may occur after a DDL command, such as the CREATE TABLE command Note: The MERGE command performs a combination of DML commands to merge data from one table into another It is covered in the lesson titled “Managing Data and Concurrency.” Oracle Database 11g: Administration Workshop I 10 - Thank You! We hope your experience with Oracle University has been enjoyable We welcome your feedback on how we can improve to better meet your needs: • End-of-course evaluations • Oracle University Office of Customer Satisfaction • Oracle Education Services We hope to see you in class again soon E - 15 Copyright © 2007, Oracle All rights reserved Thank You! Oracle University’s mission is to enhance the adoption of Oracle technology Our goal is to partner with you, providing information that is pertinent, timely, and relevant to your needs Please take a minute to complete the end-of-course evaluation and let us know how we can serve you better In the U.S., feel free to e-mail our office of customer satisfaction at: customersat_us@oracle.com If you have questions about continuing your Oracle education, need help finding a class, or want to arrange for on-site training at your company, contact Oracle Education Services for assistance In the U.S., dial 800.529.0165 For contact numbers outside the U.S., visit the following Web site: http://www.oracle.com/education/index.html?contact.html Thanks again and hope to see you in another class! Oracle Database 11g: Administration Workshop I E - 15 ... print, display, perform, reproduce, publish, license, post, transmit, or distribute this document in whole or in part without the express authorization of Oracle Maria Billings Technical Contributors... Undo Advisor 10 - Copyright © 2007, Oracle All rights reserved Oracle Database 11g: Administration Workshop I 10 - Data Manipulation • Data manipulation language (DML) consists of the following SQL... Magnus Isaksson Akira Kinutani Pete Jones Pierre Labrousse Gwen Lazenby Hakan Lindfors Srinivas Putrevu Andreas Reinhardt Ira Singer Jenny Tsai Editors Richard Wallis Amitha Narayan Graphic Designer