Search and Classification (TREX) 

SAP NetWeaver Search and Classification (TREX) finds information in both structured and unstructured data. TREX provides SAP applications with services for searching and classifying large collections of documents and for searching and aggregating business objects.

The Search Engine Service (SES) enables users to search for business objects. SES is part of the SAP NetWeaver Application Server and access TREX functions through the TREX ABAP client (for details, see Administration of the Search Engine Service).

Technical System Landscape

For an introduction to the TREX technical system landscape, see Technical System Landscape.

Tools

For a list of the tools that you use to administrate and monitor TREX and SES, see Tools.

Prerequisites

TREX offers a flexible architecture that enables a distributed installation that is modified to different requirements. A minimal system consists of a single host that provides all TREX functions. Starting with a single-host system, you can extend TREX to be a distributed system and thus increase its capacity. For more detailed information, see the SAP Service at Marketplace service.sap.com\instguidesNW2004s:

●     Single-host installation:

SAP NetWeaver 2004s Search and Classification (TREX) Single Host installation guide

●     Distributed installation:

The SAP NetWeaver 2004s Search and Classification (TREX) Multiple Hosts installation guide

 Tasks On Demand

The following section lists the most important administration tasks that are performed as required:

Tasks	Additional Information
Start and stop TREX servers	See Starting and Stopping TREX
Optimize performance	See Delta Index Configuration See Configuring Queue Parameters See Performance Settings for the Operating System ●     See Reorganization of the TREX System Landscape
Configure security	See Configuration of the TREX Security Settings
Software logistics	See Software Logistics. Information about quality and test management, release and upgrade management and support packages, and implementing SAP Notes.

Periodic Tasks

The following tasks must be completed periodically:

Tasks	Additional Information
Monitor TREX	See Monitoring
Data backup and restore	See Complete Data Backup and Restore (Offline)
Troubleshooting	See Troubleshooting

Additional Information

For more information about TREX, see SAP NetWeaver Search and Classification (TREX).