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Oracle9i OLAP User's Guide
Release 2 (

Part Number A95295-02
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The Oracle9i OLAP User's Guide describes how to use Oracle OLAP for business analysis. It introduces the concepts underlying analytical applications and multidimensional querying, and the tools used for application development and system administration.

This preface contains these topics:


This guide is intended for application developers and database administrators who perform the following tasks:

To use this document, you need no prior knowledge of Oracle OLAP.


This document is organized in five parts.

Part 1: The Basics

Provides conceptual information of general interest to anyone planning to use Oracle OLAP.

Chapter 1, "Overview"

Explains the basics of using Oracle OLAP and related client software for analytical applications.

Chapter 2, "Manipulating Multidimensional Data"

Provides an overview of data manipulation using the OLAP DML.

Chapter 3, "Developing OLAP Applications"

Presents the rich development environment and the powerful tools that you can use to create OLAP applications.

Chapter 4, "Designing Your Database for OLAP"

Highlights some of the most important data warehousing concepts, and provides additional information that is specific to Oracle OLAP.

Chapter 5, "Creating OLAP Catalog Metadata"

Provides an overview of OLAP Catalog metadata and the APIs for working with it.

Part II: "Oracle OLAP Administration"

Provides information for database administrators on administrative tasks associated with Oracle OLAP.

Chapter 6, "Administering Oracle OLAP"

Describes the various administrative tasks that are associated with Oracle OLAP.

Chapter 7, "OLAP Dynamic Performance Views"

Describes the relational views that contain performance data on Oracle OLAP.


Describes the OLAP_API_SESSION_INIT package, which contains procedures for maintaining a configuration table of initialization parameters.

Chapter 9, "Creating an Analytic Workspace From Relational Tables"

Describes how to create an analytic workspace from a star schema and OLAP Catalog metadata. Describes how to generate relational views of the workspace data.

Chapter 10, "Creating Materialized Views for the OLAP API"

Describes how to create materialized views for star schemas that will be used by the OLAP API.

Part III: "SQL Access Reference"

Provides information about SQL packages and procedures that either create relational views of multidimensional data or embed OLAP DML commands in their syntax.

Chapter 11, "DBMS_AW"

Contains reference information for the DBMS_AW package, which enables SQL programmers to issue OLAP DML statements against analytic workspace data.

Chapter 12, "OLAP_TABLE"

Describes how SQL programmers can use the OLAP_TABLE function in a SQL SELECT statement to query multidimensional data in an analytic workspace

Part IV: "OLAP Catalog Metadata API Reference"

Describes the OLAP Catalog views and the PL/SQL packages for creating OLAP Catalog metadata.

Chapter 13, "Using the OLAP Catalog Metadata APIs"

Describes how to use the CWM2 PL/SQL packages.

Chapter 14, "Viewing OLAP Catalog Metadata"

Describes the views of OLAP Catalog metadata.

Chapter 15, "CWM2_OLAP_AW_ACCESS"

Describes procedures for creating generic views of data stored in analytic workspaces.

Chapter 16, "CWM2_OLAP_AW_CREATE"

Describes procedures for creating an analytic workspace from relational tables and generating views of the resulting data in the analytic workspace.

Chapter 17, "CWM2_OLAP_CUBE"

Describes procedures for creating, dropping, and locking cubes, for adding dimensions to cubes, and for setting general properties of cubes.


Describes procedures for creating, dropping, and locking dimensions, and for setting general dimension properties.


Describes procedures for creating, dropping, and locking dimension attributes, and for setting general properties of dimension attributes.


Describes procedures for creating, dropping, and locking hierarchies, and for setting general hierarchy properties.

Chapter 21, "CWM2_OLAP_LEVEL"

Describes procedures for creating, dropping, and locking levels, for adding levels to hierarchies, and for setting the general properties of levels.


Describes a procedure for creating level attributes, associating them with dimension attributes, and for dropping, locking, and setting the general properties of level attributes.

Chapter 23, "CWM2_OLAP_MEASURE"

Describes procedures for creating, dropping, and locking measures, and for setting general properties of measures.


Describes the procedure for refreshing metadata tables for the OLAP API.


Describes the procedure for converting a parent-child dimension table to an embedded-total dimension table.

Chapter 26, "CWM2_OLAP_TABLE_MAP"

Describes procedures for mapping OLAP metadata entities to columns in your data warehouse tables or views.

Chapter 27, "CWM2_OLAP_VALIDATE"

Describes procedures for validating OLAP metadata.

Chapter 28, "CWM_CLASSIFY"

Describes procedures for creating measure folders and populating them with measures.

Part V: "OLAP API Materialized View Reference"

Explains how to create materialized views for queries for aggregate data from the OLAP API.

Chapter 29, "Creating Dimension Materialized Views"

Explains how to create materialized views for dimensions.

Chapter 30, "Creating Fact Materialized Views With DBMS_ODM"

Explains how to use the DBMS_ODM package to create fact table materialized views in grouping set form.

Chapter 31, "Creating Fact Materialized Views With OLAP Summary Advisor"

Explains how to use OLAP Summary Advisor to create fact table materialized views in concatenated rollup form.

Appendix A, "Upgrading From Express Server"

Provides upgrading instructions and identifies some of the major differences between Oracle Express Server 6.3 and Oracle9i OLAP.

Related Documentation

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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


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.


Italic typeface indicates book titles or emphasis.

Oracle9i Database Concepts

Ensure that the recovery catalog and target database do not reside on the same disk.

UPPERCASE monospace (fixed-width) font

Uppercase monospace typeface indicates elements supplied by the system. Such elements include parameters, privileges, datatypes, RMAN 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 BACKUP command.

Query the TABLE_NAME column in the USER_TABLES data dictionary view.


lowercase monospace (fixed-width) font

Lowercase monospace typeface indicates executables, filenames, directory names, and sample user-supplied elements. Such elements include computer and database names, net service names, and connect identifiers, as well as 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 open SQL*Plus.

The password is specified in the orapwd file.

Back up the datafiles and control files in the /disk1/oracle/dbs directory.

The department_id, department_name, and location_id columns are in the hr.departments table.

Set the QUERY_REWRITE_ENABLED initialization parameter to true.

Connect as oe user.

The JRepUtil class implements these methods.

lowercase italic monospace (fixed-width) font

Lowercase italic monospace font represents placeholders or variables.

You can specify the parallel_clause.

Run Uold_release.SQL where old_release refers to the release you installed prior to upgrading.

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

[ ]

Brackets enclose one or more optional items. Do not enter the brackets.

DECIMAL (digits [ , precision ])

{ }

Braces enclose two or more items, one of which is required. Do not enter the braces.



A vertical bar represents a choice of two or more options within brackets or braces. Enter one of the options. Do not enter the vertical bar.




Horizontal ellipsis points indicate either:

  • That we have omitted parts of the code that are not directly related to the example
  • That you can repeat a portion of the code

CREATE TABLE ... AS subquery;

SELECT col1, col2, ... , coln FROM employees;


Vertical ellipsis points indicate that we have omitted several lines of code not directly related to the example.


9 rows selected.

Other notation

You must enter symbols other than brackets, braces, vertical bars, and ellipsis points as shown.

acctbal NUMBER(11,2);

acct CONSTANT NUMBER(4) := 3;


Italicized text indicates placeholders or variables for which you must supply particular values.

CONNECT SYSTEM/system_password

DB_NAME = database_name


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. However, because these terms are not case sensitive, you can enter them in lowercase.

SELECT last_name, employee_id FROM employees;


DROP TABLE hr.employees;


Lowercase typeface indicates programmatic elements that you supply. For example, lowercase indicates 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


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Accessibility of Code Examples in Documentation

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