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Contents

In This Introduction

About This Manual

Software Dependencies

Assumptions About Your Locale

Demonstration Databases

Documentation Conventions

Typographical Conventions

Feature, Product, and Platform

Syntax Diagrams

Example Code Conventions

Additional Documentation

Installation Guides

Informix Error Messages

IBM Informix Dynamic Server Version 10.0 and CSDK Version 2.90 Documentation Set

Compliance with Industry Standards

IBM Welcomes Your Comments

An Overview of the Optical Subsystem

In This Chapter

The Advantages of Optical Media

Optical Media and TEXT and BYTE Data

Components of the Optical-Storage Subsystem

Optical Platter Organization

Storage of TEXT and BYTE Data

Storing TEXT and BYTE Data Objects Sequentially

Storing TEXT and BYTE Data in a Cluster

Placing TEXT and BYTE Data in Optical Clusters

Calculating Logical-Log Space for Optical Data

Support for Multiple Optical Virtual Processors

Determining the Number of Optical Virtual Processors

The Optical Subsystem API

The Memory Cache and Staging-Area Blobspace

The API Internal Layer

The API External Layer

The Optical Subsystem Message File

Installation and Initial Configuration

In This Chapter

Supporting the Shared Library

Creating the Staging Area

Naming the Staging Area on the STAGEBLOB Parameter

Configuring Optical Virtual Processors

Initializing the Optical Subsystem

Creating the Staging-Area Blobspace

Verifying the Presence of the Optical Subsystem

Creating Optical Families

Testing the Connection

Using the Optical Subsystem

In This Chapter

Assigning TEXT and BYTE Columns to an Optical Platter

Reading TEXT and BYTE Data Columns from an Optical Platter

Clustering TEXT and BYTE Data

Managing Volumes on the Optical Drives

Using TEXT and BYTE Data Descriptors

Locating the Optical Volume Where TEXT and BYTE Data Is Stored

Locating Columns Stored in Optical Families

Migrating a Database with TEXT and BYTE Data on an Optical Platter

Using HPL to Unload and Load Optical Data

The dbexport and dbimport Utilities

SQL for the Optical Subsystem

In This Chapter

ALTER OPTICAL CLUSTER (+, DB-Access, ESQL/C)

CREATE OPTICAL CLUSTER (+, DB-Access, ESQL/C)

TEXT and BYTE Data Columns

Cluster-Key Columns

DROP OPTICAL CLUSTER (+, DB-Access, ESQL/C)

RELEASE (+, DB-Access, ESQL/C)

RESERVE (+, DB-Access, ESQL/C)

SET MOUNTING TIMEOUT (+, DB-Access, ESQL/C)

Function Expressions (+, DB-Access, ESQL/C)

Appendix. Accessibility

Dotted Decimal Syntax Diagrams

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