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

You're reading from   Advanced Oracle PL/SQL Developer's Guide (Second Edition) Master the advanced concepts of PL/SQL for professional-level certification and learn the new capabilities of Oracle Database 12c

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Product type Paperback
Published in Feb 2016
Publisher
ISBN-13 9781785284809
Length 428 pages
Edition 2nd Edition
Languages
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Author (1):
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Saurabh K. Gupta Saurabh K. Gupta
Author Profile Icon Saurabh K. Gupta
Saurabh K. Gupta
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Toc

Table of Contents (14) Chapters Close

Preface 1. Overview of PL/SQL Programming Concepts FREE CHAPTER 2. Oracle 12c SQL and PL/SQL New Features 3. Designing PL/SQL Code 4. Using Collections 5. Using Advanced Interface Methods 6. Virtual Private Database 7. Oracle SecureFiles 8. Tuning the PL/SQL Code 9. Result Cache 10. Analyzing, Profiling, and Tracing PL/SQL Code 11. Safeguarding PL/SQL Code against SQL injection 12. Working with Oracle SQL Developer Index

The DBMS_RESULT_CACHE package


The Oracle-supplied package DBMS_RESULT_CACHE is used to regulate the Server Result Cache component of the shared pool. The package is owned by SYS and only privileged users should be granted the EXECUTE privilege.

The public constants used in the package are as follows:

DBMS_RESULT_CACHE constants (reference: Oracle documentation)

STATUS_BYPS

CONSTANT VARCHAR(10) := 'BYPASS';

STATUS_DISA

CONSTANT VARCHAR(10) := 'DISABLED';

STATUS_ENAB

CONSTANT VARCHAR(10) := 'ENABLED';

STATUS_SYNC

CONSTANT VARCHAR(10) := 'SYNC';

STATUS_CORR

CONSTANT VARCHAR(10) := 'CORRUPT';

The subprograms used in the package are described in the following table:

DBMS_RESULT_CACHE subprograms (reference: Oracle documentation)

BYPASS procedure

  • If set to TRUE, the result cache usage is bypassed in the current or every session.

  • Used when modifying and recompiling a PL/SQL function whose results have been cached earlier.

  • In RAC, since each instance has its own server cache, the BYPASS...

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