Adabas Parallel Services is a selectable unit of Adabas that helps you make full use of multiple-engine processors by allowing a single physical database to be accessed simultaneously by up to 31 nuclei.

This document is organized as follows:

What is Adabas Parallel Services?	Provides a high-level description of the product.
Adabas Parallel Services and Adabas Cluster Services	Describes the differences between Adabas Parallel Services and Adabas Cluster Services.
Assigning Users	Describes how Adabas Parallel Services assigns users to nuclei in a cluster.
Cluster Tasks	Describes the types of tasks that comprise an Adabas Parallel Services cluster.
Global Areas	Describes global area usage in Adabas Parallel Services.
Global Messaging Services	Describes the messaging services that are essential to communication among the active nuclei of an Adabas Parallel Services cluster.
Global Commands	Describes the global operator commands available with Adabas Parallel Services.
Logs and Log Merges	Describes the protection log (PLOG) and command log (CLOG) usage in Adabas Parallel Services.
Parallel Participant Table (PPT)	Discusses the use of the Parallel Participant Table (PPT) in Adabas Parallel Services.
Dynamic Allocation	Describes the use of dynamic allocation by ADARES for Adabas Parallel Services data sets and files.
Components Summary	Provides a component summary for Adabas Parallel Services.
Switching Between Cluster and Noncluster Modes / PLOG Handling	Describes switching between cluster and non-cluster modes in Adabas Parallel Services.
Adabas Parallel Services and Other Software AG Products	Describes the support for Adabas Parallel Services provided by other Software AG products.
Restricted Support for Adabas Features	Describes facilities that are not supported for cluster nuclei running under Adabas Parallel Services or for which restricted support is provided.
Getting Started	Describes how to get started using Adabas Parallel Services and where to go for more information.