Book Image

Advanced Oracle PL/SQL Developer's Guide (Second Edition) - Second Edition

By : Saurabh K. Gupta
Book Image

Advanced Oracle PL/SQL Developer's Guide (Second Edition) - Second Edition

By: Saurabh K. Gupta

Overview of this book

Oracle Database is one of the most popular databases and allows users to make efficient use of their resources and to enhance service levels while reducing the IT costs incurred. Oracle Database is sometimes compared with Microsoft SQL Server, however, Oracle Database clearly supersedes SQL server in terms of high availability and addressing planned and unplanned downtime. Oracle PL/SQL provides a rich platform for application developers to code and build scalable database applications and introduces multiple new features and enhancements to improve development experience. Advanced Oracle PL/SQL Developer's Guide, Second Edition is a handy technical reference for seasoned professionals in the database development space. This book starts with a refresher of fundamental concepts of PL/SQL, such as anonymous block, subprograms, and exceptions, and prepares you for the upcoming advanced concepts. The next chapter introduces you to the new features of Oracle Database 12c, not limited to PL/SQL. In this chapter, you will understand some of the most talked about features such as Multitenant and Database In-Memory. Moving forward, each chapter introduces advanced concepts with the help of demonstrations, and provides you with the latest update from Oracle Database 12c context. This helps you to visualize the pre- and post-applications of a feature over the database releases. By the end of this book, you will have become an expert in PL/SQL programming and will be able to implement advanced concepts of PL/SQL for efficient management of Oracle Database.
Table of Contents (19 chapters)
Advanced Oracle PL/SQL Developer's Guide Second Edition
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Oracle Database 12c enhancements to SecureFiles


Oracle Database 12c adds the following features to the SecureFile LOBs:

  • SecureFiles LOB will be the default storage: You might have seen this point earlier in the chapter so this is just reiterating the fact that SecureFiles will be the default storage option in Oracle Database 12c. The value of the db_securefile initialization parameter is PREFERRED, which means that all LOBs on the ASSM enabled tablespace will be created as SecureFiles (unless BasicFile is explicitly specified or the tablespace is non ASSM).

  • Parallel DML support for LOBs: If all the LOB columns in a partitioned or non-partitioned table are SecureFiles, then DML operations can be executed in parallel.

  • Data Pump uses SecureFile as the default LOB storage: You can now migrate a BasicFile to SecureFile using the Data Pump utility. During an export data pump operation, you can set the TRANSFORM handle as LOB_STORAGE to decide how the LOB segments will be created in the target database...