tailieunhanh - Oracle Database 2 Day DBA 11g Release- P9

Oracle Database 2 Day DBA 11g Release- P9:Oracle Database 2 Day DBA is a database administration quick start guide that teaches you how to perform day-to-day database administrative tasks. The goal of this guide is to help you understand the concepts behind Oracle Database. It teaches you how to perform all common administrative tasks needed to keep the database operational, including how to perform basic troubleshooting and performance monitoring activities. | Managing Program Code Stored in the Database About Program Code Stored in the Database Validating Compiling Invalid Schema Objects About Program Code Stored in the Database Oracle Database offers the ability to store program code in the database. Developers write program code in PL SQL or Java and store the code in schema objects. You as the DBA can use Oracle Enterprise Manager Database Control Database Control to manage program code objects such as PL SQL packages procedures functions and triggers Java source code Java sources and compiled Java classes The actions that you can perform include creating compiling creating synonyms for granting privileges on and showing dependencies for these code objects. You access administration pages for these objects by clicking links in the Programs section of the Schema subpage. Note that creating and managing program code objects is primarily the responsibility of application developers. However as a DBA you might have to assist in managing these objects. Your most frequent task with respect to program code objects might be to revalidate compile them because they can become invalidated if the schema objects on which they depend change or are deleted. Note Other types of schema objects besides program code objects can become invalid. For example if you delete a table any views that reference that table become invalid. See Also Oracle Database 2 Day Developer s Guide for more information about PL SQL procedures functions packages and triggers Oracle Database 2 Day Java Developer s Guide for more information about Java sources and Java classes Oracle Database PL SQL Language Reference to learn about PL SQL code Oracle Database Administrator s Guide for more information about object invalidation Validating Compiling Invalid Schema Objects As a database administrator DBA you may be asked to revalidate schema objects that have become invalid. Schema objects such as triggers procedures or views are invalidated when changes are made

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