TREX

former_member196517 · ‎10-08-2007

Hi Colleagues,

Can you help me with some basic documents about TREX..

Regards

Anuj Goyal

Former Member · ‎10-08-2007

Trex stands for Text Retrieval And classification.

Literally it is mend for a Dynasarus Category

Trex aggregation engine for processing structured business data. The BI infocubes are reflected in Trex engine and are stored as a Trex Index.

In short its like a search engine to enchance SAP netweaver Portal.

TREX is using for creating index. Also it is used to index the documents. It is very usefull to find the documents also. In this case it is just like google search engine.

You can find more details at http://help.sap.com/saphelp_nw04/helpdata/en/40/a715a90f0c66fce10000000a114cbd/frameset.htm

Go through these links

http://help.sap.com/saphelp_nw04/helpdata/en/1d/e6d9610acada409d59945617271169/content.htm

http://help.sap.com/saphelp_nw04s/helpdata/en/70/0837ced133304eba452c45b6047c74/content.htm

http://searchsap.techtarget.com/expert/KnowledgebaseAnswer/0,289625,sid21_gci1223020,00.html

/people/bettina.knauss/blog/2006/12/11/trex-admin-tool--troubleshooting-if-httpservice-is-not-running

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TREX Architecture

TREX is based on a client/server architecture. The client component is integrated into the application that uses the TREX functions, and allows communication with the TREX servers. The server component processes the requests; it indexes and classifies documents and answers search queries.

The client component is subdivided into the Java client and ABAP client. The server component is subdivided into the following servers:

● Web server with TREX extension

● RFC server

● Queue server

● Preprocessor

● Index server

● Name server

TREX Configuration

The configuration of Search and Classification (TREX) is organized as follows:

● Post-Installation Configuration

You must work through these steps immediately after the installation, so that a single-host installation of TREX works correctly and can be addressed using an ABAP or Java application. The documentation distinguishes between configuration steps that you have to complete on the TREX server side and configuration steps that you have to complete on the client side, that is, on the side of the application using TREX.

● Initial Configuration

The initial configuration comprises procedures that allow you to check problems that occur and solve them, if necessary. You can also improve TREX performance. These configuration steps are not required in order for TREX to work correctly in the default configuration or in order to allow applications to use TREX.

● Advanced Configuration

Advanced configuration comprises the following areas:

○ Language Recognition and Processing with TREX

TREX supports the indexing of documents that exist in different languages. When TREX is installed, you select the languages to be identified by language recognition. You can retrospectively configure TREX to recognize additional languages.

○ File Formats Supported by TREX

Documents whose content and attributes can be indexed and searched by TREX can exist in numerous different file formats. You can configure which file formats you want to exclude from processing and which parts of XML and HTML files you want to exclude from indexing.

○ Changing Proxy Server Settings

The TREX preprocessor can access documents on Web pages using a proxy server. You can configure the settings for the proxy server.

○ Activating Python Extensions

Some TREX functions are implemented as Python extensions. If the application using TREX uses these functions, you have to activate the Python extensions.

○ Configuration of the TREX Services in the SAP J2EE Engine

The TREX Java client is implemented as a TREX service in the J2EE engine. You can use the Visual Administrator to configure TREX caches and the TREX Java client.

○ Delta Index Configuration

TREX provides the option of activating delta indexes. This allows you to update indexes faster and improve the performance of TREX.

○ Changing the TREX Host Name (Single and Multiple-Host Installation)

You can change the name of the host on which you installed TREX later on, or you can install TREX with a virtual host name. You can do this for both single-host and multiple-host installations.

○ Configuration of the TREX Security Settings

You can configure secure communication between TREX and the application using it (for example, SAP Enterprise Portal or SAP Customer Relationship Management).

TREX Administration

TREX administration is organized into the following areas:

● Starting and Stopping TREX

To start and stop TREX, you use the SAP Management Console and the executable files startsap.exe and stopsap.exe (Windows) or the Shell scripts startsap and stopsap (UNIX).

● TREX Admin Tools

TREX provides the following administration tools:

○ TREX Monitor in the portal

You use this tool if you are implementing the Knowledge Management functions in the portal.

○ TREX Admin Tool in the SAP System

You use this tool if TREX is connected to an SAP system.

○ TREX Admin Tool (Stand-Alone)

You can use this tool independent of a portal or an SAP system.

● Data Backup and Restore for TREX

You can make a backup of a TREX installation, and restore the TREX installation using the backup version if problems occur.

● Monitoring TREX with CCMS

You can use the monitoring functions of CCMS (Computing Center Management System) to monitor TREX.

● Administration of the Search Engine Service

The Search Engine Service (SES) enables users to search for business objects using TREX. As an administrator, you complete the initial configuration of the search engine service and monitor it during routine operation.

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TREX is a search engine that belongs to SAP NetWeaver. we can use TREX to search for business objects that are part of master data, such as the SAP Business Partner, the material master, or the cost center. TREX also allows searches including a full text search, a fuzzy search, and a phonetic search.

we can use the simple and extended TREX search function in the input help (F4).

TREX is handled using an RFC connection.

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TREX Strating & Stopping

https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/11b3ca46-0a01-0010-38ab-f7a07385...

TREX Features & Futures

https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/f130c590-0201-0010-54be-b1183d1f...

TREX Functions:

https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/81c1ca90-0201-0010-a2a1-b0412ec9...

TREX Insttalation

https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/fd472c46-0a01-0010-f8b8-ac1b1de8...

https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/78df2a46-0a01-0010-ef81-a6be60cc...