Well, I think the problem could be similar, but not the same.
Proofs:
1. It affected three different PC boxes. Different - I mean various
models of PC.
2. All of the PCs do work from hardware point of view. Those two HMAs do
allow to logon directly to SE, so guest system is responding and working
properly. The only visible malfunction is logon process.
3. Affected HMCs do present primary screen when accessed from LAN.
4. Rebooted HMC works properly.
It seems some part of HMC application hanged up.
--
Radoslaw Skorupka
Lodz, Poland
W dniu 15.04.2025 o 14:12, Chalk, Shelia pisze:
I had this problem before. The pc board in the pc for the hmc went bad. IBM
had to replace the pc for the hmc.
Thanks
Shelia Chalk
Mainframe System Programmer
[email protected]
-----Original Message-----
From: IBM Mainframe Discussion List <[email protected]> On Behalf Of
Radoslaw Skorupka
Sent: Monday, April 14, 2025 3:26 PM
To: [email protected]
Subject: [EXT] Re: HMC hang up (z16)
Please Note: This email is from an [EXTERNAL] sender. Do not click on links or
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Reboot?
How???
Method 1: Logon to HMC and select Reboot. However no user can log on.
Method 2: unplug power from both power supplies. This is the thing I described
already and I don't want to perform. Note: SE (Primary or
Alternate) is a guest virtual machine of HMC.
Method 3: please advice.
Last but not least: reboot does not solve the problem.
--
Radoslaw Skorupka
Lodz, Poland
W dniu 14.04.2025 o 22:12, Allan Staller pisze:
Classification: Confidential
Reboot the hmc.
-----Original Message-----
From: IBM Mainframe Discussion List<[email protected]> On
Behalf Of Radoslaw Skorupka
Sent: Monday, April 14, 2025 2:55 PM
To:[email protected]
Subject: HMC hang up (z16)
[CAUTION: This Email is from outside the Organization. Unless you
trust the sender, Don’t click links or open attachments as it may be a
Phishing email, which can steal your Information and compromise your
Computer.]
I have observed the following problem:
HMC is hanging up.
I connect to HMC using web browser. So far so good.
Then I click "logon", type user and password and... nothing happens. For hours.
The same problem occurs when I try to logon using local console.
The console is working, I can logon to SE directly, but not to the HMC.
It is *not* single case, since three HMCs were affected. Two of them are
ordered with z16 and reside inside CEC cabinet, the third is carried forward
stand alone PC station (inherited from z15). The HMC version is 2.16.0.
Note: for standalone HMC I simply removed PS cable and enforced PC reboot. It
helped. I don't dare to repeat this brutal method for built in HMA/HMC.
Note2: Both SE works like a charm. I can switch them, logon, etc. The second
HMC inside the CEC box is also OK.
Any clue?
--
Radoslaw Skorupka
Lodz, Poland
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