Kernel upgrading steps:4.6C to 4.7EE

[Former Member]

Hi , Plz give Details steps of Kernel upgrading

[Former Member]

Hi.,

<b>Prerequisite tasks:</b>

• Be sure that the correct kernel files have been extracted under

/sapmnt/<SID>/exe_<KERNEL_LEVEL> as follows:

cd /sapmnt/<SID>/exe_<KERNEL_LEVEL>

./disp+work –V | more (for version information)

• Check that “Kernel Release” matches <KERNEL_RELEASE>.

• Check that “Patch Number” matches <KERNEL_LEVEL>.

<b>Validity</b>

This procedure is valid only for activating an r/3 kernel. It does not download or extract the kernel

<b>Procedure</b>

1. Logon to each of the application servers and the message server using telnet.

2. Logon to <sid>adm as follows:

/usr/local/bin/sudo su - <sid>adm

Enter the password.

3. Stop all application instances and the central instance (NOT the database) as follows:

stopsap r3

(Refer to the Operational Manual Chapter – ‘ Startup & Shutdown of the SAP System’)

4. Stop the SAP OS Collector.

saposcol –k

(Refer to the Operational Manual Chapter – ‘ Startup & Shutdown of the SAP System’)

5. Ensure that the shutdown was clean using the Procedure for checking R/3 shutdown.

6. Change directory to /sapmnt/<SID> as follows:

cd /sapmnt/<SID>

7. Remove the current symbolic link exe as follows: (only If the previous kernel change was linked)

Unlink exe

8. Recreate the symbolic link exe as follows: (only If the previous kernel change was linked)

umask 0

ln –s exe_<KERNEL_LEVEL> exe

9. Recreate Brtools permission for <ora>sid

login as root or equivalent and run the following command

cd /sapmnt/<SID>/exe

sudo ./saproot.sh <SID>

10. Take a snapshot of /sapmnt/SID

Thanks& Regards,

Gopinathan.T

[Former Member]

Hi,

Refer the following .

First you have to check & download the latest SAP KERNEL version from Service Marketplace, considering the Operating System and database.

Before updating the kernel make sure that all sap instances as well as database should not be working.

Logon with <sid>adm user

1. Create a new directory in /tmp and extract the kernel files there. (SAPCAR -xvf SAPEXE_XXX_XXX.SAR as well as SAPEXEDB_XX_XXX.SAR )

Check the version for Kernel Release and R3trans

2. Backup files from /sapmnt/<SID>/exe to newlocation

3. Then copy the extracted files to /sapmnt/<SID>/exe

4. The files like saposcol must be copied with root user.

5. Then Start your applications

Refet the following.

664679

&

19466

Also,

Check out this weblog it will show u the process how to apply kernel patches.

/people/thomas.jung/blog/2006/07/03/apply-support-packages-to-the-sdn-abap-as-sneak-preview

Note: Points always encourage me to reply !!

[Former Member]

Give Detailed explanation of step 4 and why we have to check R3trans version