Version 7.4.2

Introduction

This documentation provides information on Adabas Cluster Services (formerly Adaplex+), a selectable unit of Adabas that helps you to make full use of IBM's parallel sysplex environment by allowing a single physical database to be accessed simultaneously by up to 32 nuclei installed across multiple operating system images.

Adabas Cluster Services extends the earlier Adaplex+ capability to allow all nuclei in a "cluster" to process updates concurrently.

Adabas Cluster Services implements multinucleus, multithread parallel processing and optimizes Adabas in OS/390 and z/OS parallel sysplex (SYStems comPLEX) environments.

In addition to the increased throughput that results from parallel processing, Adabas Cluster Services increases database availability during planned or unplanned outages: the database can remain available when a particular operating system image or cluster nucleus requires maintenance or goes down unexpectedly.

The Adabas Cluster Services Introduction is organized in the following topics:

../graphics/gr_b_sm.gif Features of a Sysplex
../graphics/gr_b_sm.gif Components and Processes
../graphics/gr_b_sm.gif Logs and Log Merges
../graphics/gr_b_sm.gif Parallel Participant Table (PPT)
../graphics/gr_b_sm.gif Dynamic Allocation
../graphics/gr_b_sm.gif Component Summary
../graphics/gr_b_sm.gif Adabas Cluster Services and Entire Net-Work
../graphics/gr_b_sm.gif Getting Started
../graphics/gr_b_sm.gif Adabas Cluster Services and Other Software AG Products

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Conventions

Syntax

This following syntax conventions are used in this documentation when describing ADARUN parameters and operator commands:

Dataset Names

Dataset names starting with DD are referred to in the Adabas documentation with a slash separating the DD from the remainder of the dataset name to accommodate VSE/ESA dataset names that do not contain the DD prefix. The slash is not part of the dataset name.

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