Data Transformation Engine Services Guide

Chapter 4 – Start-up and Configuration Scripts

Chapter 4 – Start-up and

Configuration Scripts

The NonStop DTE CORBA Transformation Server can be started as a PATHWAY server class or a

standalone server. Sample configuration scripts (start_dtecorba.sh and stop_dtecorba.sh) are provided to

start the NonStop

DTE CORBA Transformation Server in the PATHWAY environment. To the run

NonStop DTE CORBA Transformation Server as a standalone OSS process, change to the directory

where the dteorbserv executable is located and execute the following sample OSS shell command:

./dteorbserv -ORBprofile tcp_server

Before a CORBA client can use the NonStop

DTE CORBA Transformation Server to transform data,

the NonStop

DTE CORBA Transformation Server service has to be started through these scripts and the

maps have to be copied to the same directory as the server executable (dteorbserv).

After the NonStop DTE CORBA Transformation Server starts, it either advertises itself by using the

CORBA naming service or saves the servant's reference in the DTEORBServ.ior file. If the CORBA

naming service is available, the operation should succeed. If the operation fails, the DTE CORBA

Transformation Server creates DTEORBServ.ior file and saves the server object reference there. If

the CORBA naming service is not available, the client has to copy the DTEORBServ.ior file to the

directory of its executable prior to the execution.

Configuring Map Caching in the NonStop DTE

CORBA Transformation Server

The NonStop DTE CORBA Transformation Server can cache the maps to improve performance. It uses

the LRU algorithm to maintain the maps cached in memory. Map caching can be enabled by introducing

a new ORB property called PreloadMaps in the entity through which the dteorbserv is started. The

PreloadMaps value indicates the number of maps to be cached in the memory. The NonStop DTE

CORBA Transformation Server picks up the PreloadMaps value from the ORB entity through which it

is started.

For example, if the server is started as follows:

dteorbserv -ORBprofile tcp_server