Introduction to the RPC Server for IMS Connect

The EntireX RPC Server for IMS Connect allows standard RPC clients to communicate with IMS MPP programs. It works together with the IDL Extractor for COBOL and transforms RPC requests from clients into message to IMS, using IMS Connect. This document covers the following topics:


The RPC Server for IMS Connect acts on one side as an RPC server and on the other side as a client for IMS Connect. The RPC Server for IMS Connect is a Java-based component that can run on a different host to the one where IMS is running. This allows it to operate with a zero footprint of EntireX on the IMS host.


For existing IMS COBOL MPP programs, use the IDL Extractor for COBOL to extract the Software AG IDL File for the RPC clients.

Administration using Command Central

Software AG Command Central is a tool that enables you to manage your Software AG products remotely from one location. Command Central offers a browser-based user interface, but you can also automate tasks by using commands to remotely execute actions from a terminal or custom script (for example CI servers such as Jenkins, or generic configuration management tools such as Puppet or Chef).


Command Central can assist with the following configuration, management, and monitoring tasks:

  • Infrastructure engineers can see at a glance which products and fixes are installed, where they are installed, and compare installations to find discrepancies.

  • System administrators can configure environments by using a single web user interface or command-line tool. Maintenance involves minimum effort and risk.

  • Release managers can prepare and deploy changes to multiple servers using command-line scripting for simpler, safer lifecycle management.

  • Operators can monitor server status and health, as well as start and stop servers from a single location. They can also configure alerts to be sent to them in case of unplanned outages.

The Command Central graphical user interface is described under Administering the RPC Server for IMS Connect using the Command Central GUI. For the command-line interface, see Administering the RPC Server for IMS Connect using the Command Central Command Line.

The core Command Central documentation is provided separately and is also available under Guides for Tools Shared by Software AG Products on the Software AG documentation website.

Worker Models


RPC requests are worked off inside the RPC server in worker threads. If you are using RPC conversations, each RPC conversation requires its own thread during the lifetime of the conversation. The RPC Server for IMS Connect can adjust the number of worker threads to the number of parallel requests. The RPC server provides two worker models:

    The fixed model creates a fixed number of worker threads. The number of worker threads does not increase or decrease during the lifetime of an RPC server instance.

    The dynamic model creates worker threads depending on the incoming load of RPC requests.

For configuration with the Command Central GUI, see Worker Scalability under Configuration > Server.

For technical details, see property entirex.server.fixedservers under Administering the RPC Server for IMS Connect with Local Scripts.