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Rolling Kernel Switch

Basis (Basis Technology Modules: Basis Component/System Administration, GUIs)

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Rolling Kernel Switch

Postby Zavaros » Mon Jul 18, 2016 4:13 am

hi everybody,

I am trying to make the RKS work ... with little success. :(
The kernel is 742_REL patch 28.

Code: Select all
56> sapcontrol -nr 40 -function UpdateSystem 600 600 1

18.07.2016 10:54:57
UpdateSystem
FAIL: Cannot determine ABAP SAP_BASIS release


I browsed all SAP notes and dozen of forums for solution without success. Do you have any idea what could be the issue?


Regards,
Zav
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Re: Rolling Kernel Switch

Postby Snowy » Tue Jul 19, 2016 3:26 pm

long shot...

which OS user ID are you using to do this task? It should be SIDadm.
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Re: Rolling Kernel Switch

Postby Zavaros » Wed Jul 20, 2016 9:45 am

Hello,

The command was executed as sidadm (of course)
I tried also to feed the user/password to the sapcontrol both ways: -queryuser and -user parameters

same result.

Other checks:
- I restarted the sapstartsrv with sapcontrol successfully.
- the SAP host agent and saposcol runs as root.

Regards,
Zav

Btw, do you use RKS?
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Re: Rolling Kernel Switch

Postby Snowy » Wed Jul 20, 2016 1:09 pm

I never had to use RKS. I don'T see the added value.

for me, stopping SAP, updating the kernel and start my SAP system takes less than 5 minutes of downtime when planned properly!
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Re: Rolling Kernel Switch

Postby Zavaros » Thu Jul 21, 2016 4:42 am

Hello,

I agree system restart goes fast.
Getting downtime window is the issue. It occured that we waited months for a restart with several postpones due to projects and other important activities.

semi-online kernel patch could help ... and maybe it could be usable for profile parameter changes also.

Regards,
Zav
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