SAP Kernel Upgrade steps for SUSE Linux Environment

Steps to Upgrade SAP Kernel  in SUSE Linux Environment

Preparation:
   Go to transaction code SM51, Check Current SAP Kernel version and patch level.

Kernel Dump download:

             Kernel Download, Backup & Transfer Process follow the steps.

1. Download the necessary Kernel Patch from http://support.sap.com
   
     Downloads -> SAP Support Packages and Patchs ->SAP Kernel-> choose particular version like SAP KERNEL 721.

The packages should be similar like this, Database Independent, SAPEXE_XX.SAR – Kernel Part 1 and SAPEXEDB_XX.SAR – Kernel Part II.

2. Create a new directory folder and transfer the two downloaded packages to created directory.

 mkdir /newkernel 

3. Backup the old kernel to other location


cp -pR /sapmnt/SID/exe/* /oldkernel

Hint:


Default location for kernel is in /sapmnt//exe

Kernel Upgrade Process steps

1. Login to the system as adm and go to / directory to uncar the two packages.

• SAPCAR -xvf SAPEXE_XX.SAR
• SAPCAR -xvf SAPEXEDB_.SAR

2. Stop the SAP system and saposcol (login adm mode)

• stopsap R3
• saposcol -k

Hint :

Before stopping the SAP system, please make sure the logged user, batch jobs are alerted.

3. Login to the system as root and copy all the extracted kernel packages into /sapmnt//exe

• cd /new_kernel
• cp -pR * /sapmnt/SID/exe/

4. After all the packages copied, run the following commands

• cd /sapmnt/SID/exe/
• /saproot.sh SID

5. Switch user to adm and start the SAP system and saposcol as well.

• saposcol
• startsap R3

After Upgrade Check the Kernel Versions:

1. Go to transaction code SM51, click on Release Notes. Check the latest kernel number.