SAP NetWeaver AS ABAP: High Availability 

Use

This section describes the features of SAP NetWeaver Application Server (AS) ABAP to achieve high availability. We describe the causes of downtime and the effects of such failures. We also describe how you can avoid or decrease downtime for the SAP NetWeaver AS ABAP.

This part of the documentation refers to the SAP NetWeaver ASABAP.

For more information on SAP NetWeaver AS Java, see SAP NetWeaver AS Java: High Availability.

For more information on SAP NetWeaver technical infrastructure, see the Technical Infrastructure Guide: SAP NetWeaver 7.0, which you can find on SAP Service Marketplace at service.sap.com/installNW7.0.

Integration

You need to consider all levels of a SAP system running SAP NetWeaver AS ABAP:

●      Hardware and operating system

·        Network

·        Database

For more information on switchover software, see Switchover Software for High Availability.

Features

The following table shows when you might find the information useful to improve the high availability of your SAP system:

Aim	More Information
Reduce failures in the SAP system	System Failure (SAP NetWeaver AS)
Upgrade an SAP system	Upgrade (AS-ABAP)
Improve SAP archiving	Data Archiving (AS-ABAP)
Improve the SAP spool service	Spool Service (AS-ABAP)
Convert and reorganize SAP tables	Incremental Table Conversion (AS-ABAP)
Transport into production SAP system	Transports (AS-ABAP)

Activities

You need to consider planned downtime to change:

·        Applications

You can change applications while the system is online, which means that only the changed application is unavailable. All other applications remain available.

·        Services of SAP NetWeaver AS ABAP

You have to make such changes offline, which means that SAP NetWeaver AS ABAP is not available.