ptx/SNA 3270 V4.6.0 Release Notes


Introduction

These release notes support Version 4.6.0 of the ptx®/SNA 3270 software Read this document before installing this software on your NUMA-QTM or Symmetry® systems.

The software installation procedure is documented in the DYNIX/ptx® and Layered Products Software Installation Release Notes. Read these release notes thoroughly before installing the ptx/SNA 3270 software.


Product Compatibility

The following software products are prerequisites for the ptx/SNA 3270 V4.6.0 software:


New Features in This Release

ptx/SNA 3270 V4.6.0 will now run in a threaded environment. However, the product does not support threaded operations.


Software Installation

ptx/SNA 3270 is a layered software product. Layered product installations are described in the DYNIX/ptx and Layered Products Software Installation Release Notes. Perform all of the necessary steps in these release notes and select the package for the ptx/SNA 3270 software. The package name for this software is Brx3270.

Check the following table, which lists all of the package names and the corresponding directories and files:

Application Tape

Package Name

Directory/Files

ptx/SNA 3270

Brx3270

/usr/local/brixton/Brx3270/*

/usr/local/brixton/BMD/B327_msglib

/usr/local/brixton/BMD/B387_msglib


The installation is now complete.


Starting ptx/SNA 3270

Include the following in your path:

Refer to the following table when planning the number of processes for each 3270 application you intend to use.

Product

Processes

ptx/SNA 3270 (brx3270tty, brx3270x, brx3287)

1 per invocation

ptx/SNA EHLLAPI

1 per invocation



EHLLAPI Applications

After the ptx/SNA 3270 product is installed from tape, entries are made in /etc/services for EHLLAPI sessions named a-z, A-Z, and 0-9.


ATTENTION

IBM® standards support only A-H for EHLLAPI sessions, which are also known as presentation space names.

brxehllapiA    5022/tcp
brxehllapiB    5023/tcp
.
.
.
.
.
brxehllapiH    5029/tcp
brxehllapiI    5030/tcp
brxehllapiJ    5031/tcp
.
.
.
.
.
brxehllapiZ    .......
brxehllapia    .......
brxehllapib    .......
.
.
.
brxehllapiz    .......
brxehllapi0    .......
brxehllapi1    .......
.
.
.
.
brxehllapi9    .......



Related Documentation

The following manuals may contain helpful information for the ptx/SNA 3270 product:


Problem Report Summary


IND$FILE Uses Structured Query Mode (208988)

The IND$FILE file transfer program (pcft) is defined by IBM to use two modes of operation: Query Mode and Buffer Mode. ptx/SNA 3270 only supports Query Mode file transfers. This means that the Query bit in the Presentation Services of the 3270 LOGMODE table must be turned on.

This is a change from ptx/SNA 3270 V1.1 and previous releases that only supported Buffer Mode transfer. The host systems programmer must supply a LOGMODE that supports Query Mode transfers.

Workaround: None.


IND$FILE Will Dump Core (209702)

The IND$FILE file transfer program (pcft) will dump core if the ptx/SNA 3270 terminal emulator (brx3270tty or brx3270x) associated with it is terminated.

Workaround: Do not kill the brx3270tty process while pcft is processing.


The Terminal Can Hang (208799)

Switching to SSCP-LU sessions too often while data is flowing on the LU-LU session can cause the terminal to hang or cause an invalid state transition error and terminate the 3270 terminal emulator (brx3270tty or brx3270x).

Workaround: If the terminal process hangs, stop and restart the emulator.


The Terminal May Exit (209931)

In the transition period between logging off from an LU-LU session and being returned to the SSCP-LU session, if you hit a key, brx3270x may exit with the message Invalid FSM transition. Another symptom of this problem is that the emulation process can hang.

Workaround: Do not enter any keystrokes while an LU-LU session is being terminated.