This document describes how to configure the IMS connection for a Natural Development Server running on z/OS.

The following topics are covered:

• Configuration File

• Configuration Parameters

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Configuration File

After the installation of the Natural Development Server IMS Adapter is complete, the configuration of the Natural Development Server IMS Adapter has to be done in the Natural Development Server configuration file of the corresponding Natural Development Server.

To enable the Natural Development Server IMS Adapter, specify the remote front-end module in the NDV configuration parameter FRONTEND_NAME:

FRONTEND_NAME=NATISRFE.

Configuration Parameters

The following IMS-relevant configuration parameters exist.

• RFE_IMS_TA_NAME

• RFE_IMS_TA_HOST

• RFE_IMS_TA_PORT

• RFE_IMS_TRACE

RFE_IMS_TA_NAME

This configuration parameter specifies the IMS transaction to be used for starting the remote front-end in IMS TM. This transaction must be defined in IMS TM and must refer to the program NATINRFE. See also Customizing the IMS TM Environment in Installing the NDV IMS Adapter in the Installation for z/OS documentation.

Default Value	none
Example	RFE_IMS_TA_NAME=NATvrsAD

RFE_IMS_TA_HOST

This configuration parameter specifies the TCP/IP address of the host the desired IMS TM is running. This parameter can be omitted if the development server and IMS TM are running on the same TCP/IP node.

Default Value	The host address of the development server.
Example	RFE_IMS_TA_HOST=node1 or RFE_IMS_TA_HOST=157.189.160.55

RFE_IMS_TA_PORT

This configuration parameter specifies the TCP/IP port of the IMS supplied listener.

Possible Values	1 - 65535
Default Value	none
Example	RFE_IMS_TA_PORT=3020

RFE_IMS_TRACE

This configuration parameter specifies the trace level for the remote front-end.

The trace level is similar to the trace implemented for the development server. It is a bit string, where each bit is responsible for a certain trace information:

Bit 31	Trace main events (transaction initialization/termination, request processing).
Bit 30	Detailed functions.
Bit 29	Dump internal storage areas.
Bit 27	Dump buffer header exchanged between development server and IMS TM.
Bit 26	Dump entire buffer exchanged between development server and IMS.
Bit 25	Dump the Natural Development Server relevant buffer only (remote gateway buffer).
Bit 23	Trace error situations only.
Bit 07	Activate trace in the development server region.
Bit 06	Activate trace in the IMS MPP region.
Bit 00	Reserved for trace-level extension.

The trace destination is the data set defined for STDOUT.

Default Value	0
Example	RFE_IMS_TRACE=31+27+7 Dump main events and buffer header in the IMS MPP region (Bits 31 + 27 + 7).

The following is a sample development server configuration file using the Natural Development Server IMS Adapter:

   # The development server parameter
SESSION_PARAMETER=PROFILE=(NDV,10,930)
FRONTEND_NAME=NATISRFE         # Use the IMS Adapter front-end.
PORT_NUMBER=4711               # The port number used by Natural Studio.

   # The IMS Adapter parameter
RFE_IMS_TA_NAME=NATvrsAD       # The IMS transaction for remote front-end.
RFE_IMS_TA_PORT=3020           # The port of the IMS listener. 
                               # No RFE_IMS_TA_HOST is defined. This requires
                               # that IMS runs on the same node as the
                               # development server.