Kernel Update

[Former Member]

Hi all,

I need to overwrite the SAP kernel files. I did the following steps:

1) stopped the SAP instance using SAPMC on SANDBOX environment

2) stopped the SAP<SID>_nn and SAPOSCOL services on SANDBOX environment

3) copied the SAP kernel files (usr\sap\SID\SYS\exe\run) from PRD environment

4) pasted all the files from item 3 above to SANDBOX environment on usr\sap\SID\SYS\exe\run folder

5) executed the disp+work command on SANDBOX environment and the result is Kernel Patch Number = 295 (equal to PRD environment)

6) started the SAP<SID>_nn and SAPOSCOL services on SANDBOX environment

7) started the SAP instance using SAPMC on SANDBOX environment

😎 executed the disp+work command on SANDBOX environment and the result is Kernel Patch Number = 80 (equal to SANDBOX environment)

SANDBOX environment will be used for SAP ECC 6 upgrade tasks.

PRD environment is SAP R/3 4.7 x 1.10

SANDBOX environment is SAP R/3 4.7 x 2.0

Why after the SAP instance is started the Kernel Patch Number back to 80 value ?

Could you help me, please ?

Thank you very much,

[JPReyes · Accepted solution]

Yes... basically theres only 1 folder where you should upgrade the kernel... once updated sapcpe.exe distribute the files around so if you decompress the kernel in the wrong location this is the result.

As said by AC the location where the new kernel should be dumped is /sapmnt/<SID>/exe in UNIX env... for Windows is /usr/sap/<SID>/SYS/exe/<n>uc/<platform>

That info is located at the very end of SAP Note 19466 - Downloading SAP kernel patches

Regards

Juan

[Former Member · Accepted solution]

Hi All,

We just followed the procedure writted by Juan copying the new kernel files to the folders bellow:

\usr\sap\<SID>\SYS\exe\Run

\usr\sap\<SID>\SYS\exe\uc\<platform>

Thanks everybody for help.

[Former Member]

Hi,

Have you checked the Symbolic links under /usr/sap/SID/SYS/exe if you look carefully you will probably see that run directory is a link from dbg and so on.

If you have this links you must then update the Kernel under /SAPMNT/SID/exe where you will see that all kernel files are located.

Have a nice day,

[Former Member]

Hello,

Did you copy the kernel to the SYS exe folder or the instance (eg DVEBMGS00) folder? In your start profile you likely have it copy the contents of the SYS exe folder to the instance folder (that's SAP standard and very useful for updating multiple instances), thus over writing the files copied over from PRD. Copy the PRD kernel to the folder under SYS next time and it should work after a restart of SAP.

Regards,

Michael