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Kernel Upgrade from version 700 to 720 (AIX)

1. Login as Root

2. Make new backup directory

          cd /

          mkdir <kernerl_backup>

3. Create latest kernel backup

         cp -pr /sapmnt/SID/exe/* /tmp/<kernerl_backup>

4. Make new shadow kerner directory

          cd /tmp/

          mkdir <new_kernel>

5. Copy the new downloaded kernel files into /<new_kernel>

6. Unpack the new downloaded kernel in folder /<new_kernel>.

          sapcar -xvf <filename>.SAR

7. Loging as <SID>ADM         

          (switch user)   su -<SID>ADM

8. Stop the SAP System



         saposcol -k

10. Login as Root

11. Go to the current kernel directory

          cd /sapmnt/<SID>/exe

12. Copy all extracted Support Packages into this folder.

         cp -pr /tmp/<new_kernel>/* /sapmnt/<SID>/exe

13. Copy back the original file into this folder.

         cp -p /tmp/<kernel_backup>/ /sapmnt/<SID>/exe

14. Go to the current kernel directory.

         cd /sapmnt/<SID>/exe

15. Then run

         ./ <SID>

16. Login as <SID>ADM

           su -<SID>adm

17. Start the saposcol serice.


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      Author's profile photo Isaias Freitas
      Isaias Freitas


      Just some observations.

      1) You can rename the current "exe" folder to something like "exe_old" and then create a new, empty "exe" folder where you will uncompress the new kernel;

      2) The kernel 720 is not supported anymore. Consider using the kernel 721 or 722;

      3) The following SAP notes have complete / detailed steps to perform the kernel upgrade. There are (several) steps missing at this document.

      • 1716826 - Usage of the downward compatible kernel 721 (EXT)
      • 1713986 - Installation of kernel 721 (EXT)
      • 2133909 - Usage of kernel 722 (EXT)
      • 2115344 - Installation of Kernel 722 (EXT)



      Author's profile photo Former Member
      Former Member
      Blog Post Author

      Hi Isaias,

      Thank you for your very valuable suggestions. 


      Sheshi Kumar B