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You're reading from  Advanced Oracle PL/SQL Developer's Guide (Second Edition) - Second Edition

Product typeBook
Published inFeb 2016
Reading LevelIntermediate
Publisher
ISBN-139781785284809
Edition2nd Edition
Languages
SQL
Tools
Oracle Database
Concepts
Database Administration
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Author (1)
Saurabh K. Gupta
Saurabh K. Gupta
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Saurabh K. Gupta

Saurabh K. Gupta is a seasoned database technologist with extensive experience in designing high performance and highly available database applications. His technology focus has been centered around Oracle Database architecture, Oracle Cloud platform, Database In-Memory, Database Consolidation, Multitenant, Exadata, Big Data, and Hadoop. He has authored the first edition of this book. He is an active speaker at technical conferences from Oracle Technology Network, IOUG Collaborate'15, AIOUG Sangam, and Tech Days. Connect with him on his twitter handle (or SAURABHKG) or through his technical blog www.sbhoracle. wordpress.com, with comments, suggestions, and feedback regarding this book.
Read more about Saurabh K. Gupta

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Executing Java programs from PL/SQL

Like the C programs, Java programs can also natively execute in the Oracle Database. However, unlike C external programs, the Java classes and Java source files are stored as schema objects in the database.

External Java programs are not executed through OS-based shared libraries but use a Java shared library or libunit for execution. Libunits are similar to dynamically linked libraries but they are mapped one-to-one to the Java class and are not sharable across the other methods.

The libunit is loaded and executed by the Java Virtual Machine (JVM) which resides natively in the Oracle Database. The JVM uses the Java pool component of the shared global area to execute the Java-based external program.

Loading a Java class into a database

A Java program can be loaded into an Oracle Database by using the CREATE JAVA statement or the LOADJAVA utility.

The CREATE JAVA statement enables the Java Virtual Machine library manager to load a Java class into the Oracle...

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Advanced Oracle PL/SQL Developer's Guide (Second Edition) - Second Edition
Published in: Feb 2016Publisher: ISBN-13: 9781785284809
© 2016 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Saurabh K. Gupta

Saurabh K. Gupta is a seasoned database technologist with extensive experience in designing high performance and highly available database applications. His technology focus has been centered around Oracle Database architecture, Oracle Cloud platform, Database In-Memory, Database Consolidation, Multitenant, Exadata, Big Data, and Hadoop. He has authored the first edition of this book. He is an active speaker at technical conferences from Oracle Technology Network, IOUG Collaborate'15, AIOUG Sangam, and Tech Days. Connect with him on his twitter handle (or SAURABHKG) or through his technical blog www.sbhoracle. wordpress.com, with comments, suggestions, and feedback regarding this book.
Read more about Saurabh K. Gupta

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