HP-UX SNAplus2 Diagnostics Guide

Resolving Common Problems

Resolving Speciﬁc Problems

Chapter 2 47

the session is started. This option is usually used when running HLLAPI

applications that control the display using the DISPLAY_ON and

DISPLAY_OFF verbs. Change this option by modifying the Host Screens

Suppressed at Startup option in the Customize Display Parameters

dialog.

If you have checked the style ﬁle, and this is not the source of problem,

then the blankscreen indicates that the 3270 emulation program has not

been able to establish a session to the host. You should check the

following:

Step 1. Ensure that you have tried to activate the session. You can activate the

session either from the Control menu, or by using a 3270 style ﬁle with

an initially active session. Refer to the HP-UX SNAplus2 3270/3179G

Users Guide for more information about using the Control menu, and

about 3270 style ﬁles.

You can also check the status of the session from the Control menu.

Step 2. Check the conﬁguration of the 3270 user. It is possible to conﬁgure a

3270 user with no sessions. Check this in one of the following ways:

• If you are using the Motif administration program, then zoom on the

3270 user to view the conﬁguration. Refer to the Motif administration

program online help for more information about this.

• If you are using the command-line administration program then issue

the snapadmin query_3270_user command to view the

conﬁguration.

If the user is conﬁgured without any sessions then conﬁgure the user

with at least one session. Do this in one of the following ways:

• If you are using the Motif administration program, then zoom on the

3270 user to modify conﬁguration.

• If you are using the command-line administration program then issue

the snapadmin define_3270_user command to modify the

conﬁguration.

Step 3. Check the 3270 status line, which is at the bottom of the session screen,

for any COMM or PROG check errors. If there are, then refer to the

HP-UX SNAplus2 3270/3179G Users Guide for more information about

these errors.

Step 4. Check that the 3270 LU that is being used is active. Check this using the