Oracle® Application Server Web Cache Administrator's Guide
10g Release 2 (10.1.2) Part No. B14046-01 |
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Oracle Application Server Web Cache Administrator's Guide describes how to use Oracle Application Server Web Cache (OracleAS Web Cache) to cache both static and dynamically generated content for at least one origin server.
This Preface contains these topics:
Oracle Application Server Web Cache Administrator's Guide is intended for Web site administrators who perform the following tasks:
Web site administration
Origin server administration
Domain Name System (DNS) administration
To use this guide, you need to be familiar with release 1.0 and 1.1 of the HTTP protocol, as well as application Web server and DNS administration.
Our goal is to make Oracle products, services, and supporting documentation accessible, with good usability, to the disabled community. To that end, our documentation includes features that make information available to users of assistive technology. This documentation is available in HTML format, and contains markup to facilitate access by the disabled community. Standards will continue to evolve over time, and Oracle is actively engaged with other market-leading technology vendors to address technical obstacles so that our documentation can be accessible to all of our customers. For additional information, visit the Oracle Accessibility Program Web site at
http://www.oracle.com/accessibility/
Accessibility of Code Examples in Documentation
JAWS, a Windows screen reader, may not always correctly read the code examples in this document. The conventions for writing code require that closing braces should appear on an otherwise empty line; however, JAWS may not always read a line of text that consists solely of a bracket or brace.
Accessibility of Links to External Web Sites in Documentation
This documentation may contain links to Web sites of other companies or organizations that Oracle does not own or control. Oracle neither evaluates nor makes any representations regarding the accessibility of these Web sites.
This document contains:
Part I, "Getting Started with OracleAS Web Cache"
Chapter 1, "Introduction to OracleAS Web Cache"
This chapter introduces the architecture, benefits, and main features of OracleAS Web Cache.
This chapter explains how OracleAS Web Cache is populated with content, how that content maintains consistency, and how dynamically generated content is cached.
This chapter explains the concept of a cache cluster—that is, how multiple instances of OracleAS Web Cache can run as independent caches, with no interaction with one another.
Chapter 4, "OracleAS Web Cache Security"
This chapter describes the architecture and configuration of security for OracleAS Web Cache.
Chapter 5, "OracleAS Web Cache Topologies"
This chapter presents several scenarios for deploying OracleAS Web Cache.
Chapter 6, "Introduction to Administration Tools"
This chapter introduces the various administration tools of OracleAS Web Cache. It discusses the main administration application and tells you how to launch it and navigate through it.
Chapter 7, "Starting and Stopping OracleAS Web Cache"
This chapter describes how to start and stop OracleAS Web Cache, invalidate documents in the cache, and evaluate event and access log files.
Part II, "Configuration and Administration of OracleAS Web Cache"
Chapter 8, "Setup and Configuration"
This chapter describes the steps to initially configure OracleAS Web Cache to begin caching content.
Chapter 9, "Configuring OracleAS Web Cache for HTTPS Requests"
This chapter provides instructions for configuring OracleAS Web Cache to accept HTTPS protocol requests.
Chapter 10, "Configuring Cache Clusters"
This chapter explains how to configure cache clusters for high availability.
Chapter 11, "Configuring a Hierarchy of Caches"
This chapter explains how to configure cache hierarchies.
Chapter 12, "Creating Caching Rules"
This chapter explains how to configure caching rules.
Chapter 13, "Sending Invalidation Requests"
This chapter explains how to send invalidation requests to OracleAS Web Cache.
Chapter 14, "Monitoring Cache Trends with Statistics"
This chapter describes how to gather performance statistics and interpret them.
Chapter 15, "Using Diagnostics Tools"
This chapter describes how to list popular requests and cache content, evaluate event and access log files, and display and interpret diagnostic information.
Chapter 16, "Edge Side Includes (ESI) Language Tags"
This chapter describes the Edge Side Includes (ESI) language used for content assembly of dynamic fragments.
Chapter 17, "Event Log Messages"
This chapter describes the event log messages.
Appendix A, "OracleAS Web Cache Directory Structure"
This appendix describes the installed OracleAS Web Cache directory structure.
Appendix B, "Invalidation and Statistics Document Type Definitions"
This appendix describes the Document Type Definition (DTD), or grammar, of invalidation requests and responses.
Appendix C, "OracleAS Web Cache as a Standalone Product"
This appendix describes the commands and associated syntax of the webcachectl
utility.
Appendix D, "Caching with Third-Party Application Web Servers"
This appendix describes how OracleAS Web Cache works with third-party application Web servers.
Appendix E, "Troubleshooting OracleAS Web Cache"
This appendix describes common configuration problems and debugging techniques for resolving them.
The glossary defines terminology used throughout this guide.
For more information, see:
Online help available through Oracle Enterprise Manager 10g and Oracle Application Server Web Cache Manager
The Oracle Application Server documentation set, especially:
Printed documentation is available for sale in the Oracle Store at
http://oraclestore.oracle.com/
To download free release notes, installation documentation, white papers, or other collateral, please visit the Oracle Technology Network (OTN). You must register online before using OTN; registration is free and can be done at
http://www.oracle.com/technology/membership
If you already have a username and password for OTN, then you can go directly to the documentation section of the OTN Web site at
http://www.oracle.com/technology/documentation/
For additional information, see:
http://www.rfc-editor.org/
for information about Base64 encoding, URL encoding, the HTTP protocol, and the Set-Cookie
response header.
Use the RFC search to find the information of interest.
http://www.cs.utah.edu/dept/old/texinfo/regex/regex_toc.html
for regular expression syntax.
http://www.ietf.org/
for information about the Open Systems Interconnection (OSI)
http://www.cookiecentral.com/
for further information about cookies.
http://www.esi.org
for further information about the Edge Side Includes (ESI) language
http://www.xslt.com/
for complete information about XSLT
http://www.w3.org/TR/WD-logfile.html
for further information about the Extended Log Format (XLF)
This section describes the conventions used in the text and code examples of this documentation set. It describes:
Conventions in Text
We use various conventions in text to help you more quickly identify special terms. The following table describes those conventions and provides examples of their use.
Convention | Meaning | Example |
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Bold | Bold typeface indicates terms that are defined in the text or terms that appear in a glossary, or both. | When you specify this clause, you create an index-organized table. |
Italics | Italic typeface indicates book titles or emphasis. | Oracle Database Concepts
Ensure that the recovery catalog and target database do not reside on the same disk. |
UPPERCASE monospace (fixed-width) font
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Uppercase monospace typeface indicates elements supplied by the system. Such elements include parameters, privileges, datatypes, Recovery Manager keywords, SQL keywords, SQL*Plus or utility commands, packages and methods, as well as system-supplied column names, database objects and structures, usernames, and roles. | You can specify this clause only for a NUMBER column.
You can back up the database by using the Query the Use the |
lowercase monospace (fixed-width) font
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Lowercase monospace typeface indicates executable programs, filenames, directory names, and sample user-supplied elements. Such elements include computer and database names, net service names and connect identifiers, user-supplied database objects and structures, column names, packages and classes, usernames and roles, program units, and parameter values.
Note: Some programmatic elements use a mixture of UPPERCASE and lowercase. Enter these elements as shown. |
Enter sqlplus to start SQL*Plus.
The password is specified in the Back up the datafiles and control files in the The Set the Connect as The |
lowercase italic monospace (fixed-width) font
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Lowercase italic monospace font represents placeholders or variables. | You can specify the parallel_clause .
Run |
Conventions in Code Examples
Code examples illustrate SQL, PL/SQL, SQL*Plus, or other command-line statements. They are displayed in a monospace (fixed-width) font and separated from normal text as shown in this example:
SELECT username FROM dba_users WHERE username = 'MIGRATE';
The following table describes typographic conventions used in code examples and provides examples of their use.
Convention | Meaning | Example |
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[ ] |
Anything enclosed in brackets is optional. |
DECIMAL (digits [ , precision ]) |
{ } |
Braces are used for grouping items. |
{ENABLE | DISABLE} |
| |
A vertical bar represents a choice of two options. |
{ENABLE | DISABLE} [COMPRESS | NOCOMPRESS] |
... |
Ellipsis points mean repetition in syntax descriptions.
In addition, ellipsis points can mean an omission in code examples or text. |
CREATE TABLE ... AS subquery; SELECT col1, col2, ... , coln FROM employees; |
Other symbols | You must use symbols other than brackets ([ ]), braces ({ }), vertical bars (|), and ellipsis points (...) exactly as shown. |
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Italics
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Italicized text indicates placeholders or variables for which you must supply particular values. |
CONNECT SYSTEM/system_password DB_NAME = database_name |
UPPERCASE |
Uppercase typeface indicates elements supplied by the system. We show these terms in uppercase in order to distinguish them from terms you define. Unless terms appear in brackets, enter them in the order and with the spelling shown. Because these terms are not case sensitive, you can use them in either UPPERCASE or lowercase. |
SELECT last_name, employee_id FROM employees; SELECT * FROM USER_TABLES; DROP TABLE hr.employees; |
lowercase |
Lowercase typeface indicates user-defined programmatic elements, such as names of tables, columns, or files.
Note: Some programmatic elements use a mixture of UPPERCASE and lowercase. Enter these elements as shown. |
SELECT last_name, employee_id FROM employees; sqlplus hr/hr CREATE USER mjones IDENTIFIED BY ty3MU9; |
Conventions for Windows Operating Systems
The following table describes conventions for Windows operating systems and provides examples of their use.
Convention | Meaning | Example |
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Choose Start > menu item | How to start a program. | To start the Database Configuration Assistant, choose Start > Programs > Oracle - HOME_NAME > Configuration and Migration Tools > Database Configuration Assistant. |
File and directory names | File and directory names are not case sensitive. The following special characters are not allowed: left angle bracket (<), right angle bracket (>), colon (:), double quotation marks ("), slash (/), pipe (|), and dash (-). The special character backslash (\) is treated as an element separator, even when it appears in quotes. If the filename begins with \\, then Windows assumes it uses the Universal Naming Convention. | c:\winnt\system32 is the same as C:\WINNT\SYSTEM32
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C:\>
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Represents the Windows command prompt of the current hard disk drive. The escape character in a command prompt is the caret (^). Your prompt reflects the subdirectory in which you are working. Referred to as the command prompt in this manual. |
C:\oracle\oradata> |
Special characters | The backslash (\) special character is sometimes required as an escape character for the double quotation mark (") special character at the Windows command prompt. Parentheses and the single quotation mark (') do not require an escape character. Refer to your Windows operating system documentation for more information on escape and special characters. |
C:\> exp HR/HR TABLES=emp QUERY=\"WHERE job='REP'\" |
HOME_NAME
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Represents the Oracle home name. The home name can be up to 16 alphanumeric characters. The only special character allowed in the home name is the underscore. |
C:\> net start OracleHOME_NAMETNSListener
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ORACLE_HOME and ORACLE_BASE
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In releases prior to Oracle8i release 8.1.3, when you installed Oracle components, all subdirectories were located under a top level ORACLE_HOME directory. The default for Windows was C:\orant .
This release complies with Optimal Flexible Architecture (OFA) guidelines. All subdirectories are not under a top level All directory path examples in this guide follow OFA conventions. Refer to Oracle Database Installation Guide for Windows for additional information about OFA compliances and for information about installing Oracle products in non-OFA compliant directories. |
Go to the ORACLE_BASE \ ORACLE_HOME \rdbms\admin directory.
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