Error in ZOPEN: ZLU table is full

[Peter lloyd-Brown]

Hi All,

We are using X.25/ACC. When I try and run the command >/opt/acc/bin/zmntr I get this error :-

Error in ZOPEN: ZLU table

and I can't see any of the terminals from within zmntr.

I guess the error message is fairly self explanatory. The maximum number of ZLUs available has been reached ( ZCOM message handling is achieved through logical constructs called ZLUs which maintain queues for messages to terminals and programs. Each X.25 link and each virtual circuit uses one ZLU.)

I think the kernel parameter n2z_max_zlu value is used to allocate ZLU table space.

Does anyone know if I should add this kernel parameter to /stand/system to solve the problem?

Any suggestions very welcome.

Cheers

Pete

[Peter lloyd-Brown]

Apologies, full error should read:

Error in ZOPEN: ZLU table is full

[Brian Hackley]

Peter,

Here's a couple of thoughts:
Its possible that ACC has not started up,
or that zmasterd is hung.
Is there anything in /var/opt/acc/log/*.tlog?
Try a zmasterd kill and cold restart?
Have you tried to do this after a reboot?

If you don't find anything after that, nor any resolution from these Forums, you will most likely want to get all the infos at your disposal including ACC product version and patches and open up a software call.

Hope this helps,
-> Brian Hackley

[Peter lloyd-Brown]

Thanks Brian,

There's nothing untoward in
/var/opt/acc/log/***.tlog.

We are going to try a cold restart of zmasterd and see what happens. Unfortunately the machine in question is in a live environment so downtime for a reboot is not available.

Cheers

Pete