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Oracle Scripting

Oracle Tips by Burleson

The oldest form of system automation involves the use of scripts and other mechanisms to batch jobs. Every major operating system provides some capacity to develop scripts, from the simple DOS batch programming to the potentially unlimited applications of awk, sed, and perl on Unix systems. On Oracle systems, the developer can utilize both SQL*Plus and PL/SQL in addition to any scripting languages supported by the operating system.

Within the context of an Oracle database, scripting usually follows one of several predominant types. More detailed information about the development of scripts using SQL and PL/SQL can be found in Chapter 3.

Stored PL/SQL Objects

Stored PL/SQL allows you, the application developer, to write code once and enforce your business logic inside the database. This provides a tremendous advantage in an environment where business rules are regularly subject to change. The modular nature of these objects allows business rules to be enabled and disabled quite easily.

All stored PL/SQL objects have certain common traits, including:

  • Their source code is stored within the ALL_SOURCE view (with the exception of database triggers, whose source code is stored in the ALL_TRIGGERS view).

  • They execute with the authorities of the user who created the object.

  • They incorporate both SQL and PL/SQL statements.

  • Their access is controlled like all other objects in the database. The ability of an individual user to execute a specific stored object (or all stored objects) must be granted to a user.

This is an excerpt from the book "High Performance Oracle Database Automation" by Jonathan Ingram and Donald K. Burleson, Series Editor.


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