Skip to Content

Kernel Upgrade on Windows

Hello,

While performing Kernel Upgrade (4.7 Enterprise Edition), I noticed that the in the system the following 2 directories have the same kernel files

G:\usr\sap\B47\SYS\exe\run

G:\usr\sap\B47\SYS\exe\nuc\NtIntel

There can't be 2 kernel directories. So I tried looking for Parameter - DIR_CT_RUN in the START profile.

But I couldn't find DIR_CT_RUN

So, which one of the above 2 directories is the Kernel directory?

And why are there 2 directories having the same kernel files?

Thanks.

Edited by: Gautam Poddar on Jul 21, 2009 8:43 AM

Add comment
10|10000 characters needed characters exceeded

  • Get RSS Feed

3 Answers

  • Best Answer
    avatar image
    Former Member
    Jul 21, 2009 at 08:05 AM

    Hi,

    In one of my R/3 4.7 system, I have got these kernel directories on the CI/DB server :

    T:\usr\sap\PLG\SYS\exe\run where the running kernel is found

    T:\usr\sap\PLG\SYS\exe\nuc\NTAMD64

    T:\usr\sap\PLG\SYS\exe\nuc\NTI386

    T:\usr\sap\PLG\SYS\exe\nuc\NtIa64

    Why because the central instance server runs on Windows Itanium 64 bit and we have some application servers running on Windows Intel x86 32 bit and some others on Windows Intel x86 64 bit.

    At startup, the server (central or app server) copies the main kernel executables from the right architecture to the right running kernel directory.

    This is a way to mke sure that all serevers from the same SAP system run the same kerne l patch level for the right architecure.

    Regards,

    Olivier

    Add comment
    10|10000 characters needed characters exceeded

    • Former Member Gautam Poddar

      Hi,

      >So, while doing Kernel Upgrade, I just need to copy the new files to - \usr\sap\SID\SYS\exe\run ?

      >Then during startup, the system will automatically copy them into - \usr\sap\SID\SYS\exe\nuc\NTIntel

      This is just the contrary : Files are copied from \usr\sap\SID\SYS\exe\nuc\NTIntel (architecture reference) to

      \usr\sap\SID\SYS\exe\run (running kernel)

      But you still have to update both directories because sapcpe does not copy all kernel files, just the main ones.

      Regards,

      Olivier

  • avatar image
    Former Member
    Jul 21, 2009 at 06:49 AM

    Hi

    G:\usr\sap\B47\SYS\exe\run is default kernal directory

    Regards,

    babitha

    Add comment
    10|10000 characters needed characters exceeded

    • Former Member Gautam Poddar

      HI,

      this directory " G:\usr\sap\B47\SYS\exe\nuc\NtIntel " contains old kernal backup files

      Regards,

      Babitha

      Edited by: babitha.m on Jul 21, 2009 8:58 AM

  • avatar image
    Former Member
    Jul 21, 2009 at 08:24 AM

    Hi

    You can check this link for more clarity

    http://www.saptechies.com/installing-640-kernel-in-sap-web-as-610620/

    Regards

    Uday

    Add comment
    10|10000 characters needed characters exceeded