kernel upgrade in a clustered environment

[manikandanharis]

hi guys

i have this question. In a clustered environment "how to upgrade the kernel level"

for example consider there are two nodes A and B with shared disk ( that contains the SAP files). if i want to upgrade the kernel level, where do i start? say my system runs on Node A and if i upgrade it on Node A, will it be okay or is there a procedure to do it.

if any of you guys have done kernel upgrade in a clustered environment please share the document

thanks

[former_member182967 · Accepted solution]

Hi Manikandan,

Please check thread https://scn.sap.com/thread/1587911.

Additionally, use sapcpe to to replicate the kernel files to the local executables location.

Regards,

Ning

[Former Member · Accepted solution]

Hi,

There isn't any difference when upgrading kernle in cluster environment. You need to follow the same step while upgrading as one would in normal environment like

• Stop SAP
• Backup kernel.
• Paste New file in Central Kernel directory --> cdexe
• Paste New files in local Kernel directory --> /usr/sap/SID/DV*/exe to avoid dependencies on sapcpe.exe
• Start SAP.

Sap note 1929379 - Kernel Upgrade on Windows Cluster

Regards

Prithviraj

[Former Member]

Dear Manikandan,

With my knowledge I hope the normal and cluster kernel upgrade has no difference...

You can use the following to upgrade Kernel,

Download the Kernel files (database dependent and Database Independent) and uncar the files

* Check your Kernel version with "disp+work"

* Stop SAP Instance

* Go to the path,

Win : usr\sa\SID\SYS\exe\uc

Unix = sapmnt/SID/exe

* Take a backup of the current kernel

* Replace the new kernel on the same folder

* In unix run the command on the the Kernel folder (linux only)

.\saproot.sh

* Start the SAP Instance

* Check the Version of the Kernel usingh "disp+work"

Hope it helps you,

Best Regards,

Sajmal

[Former Member]

Dear

Stopsap only app server

Download DB independent and DB dependent file SMP uncar them

make backup of exe folder

and replace all new file with /SAPMNT/SID/EXE which will replace all locaiton of kernal

then u can run SAPCPE which will replace files during system startup

run ./saproot.sh which will look after permision of brtools

DISP+WORK you can check before start of system

then

Startsap

Reagrds