SAP Kernel Upgrade Step by Step

SAP Kernel Upgrade 

Step by step procedure for SAP Kernel Upgrade

Check the current Kernel Version

Option 1. You can do this from SAP GUI by looking into System > Status >  

OR You can open transaction SM51 and click on Release Notes

Option 2. Run disp+work -V through sidadm user from OS level

 

Kernel version we have identified is 753 Patch 300

Download the Kernel and required archives from SAP Portal

1. Open SAP Portal through  https://me.sap.com/

Under Support Pack and Patches -> Under  Alphabetical Index {Follow the inline images}

Select SAP Kernel 7.53 Unicode  - Download Kernel Part-I and II of same patch level for DB independent and Dependent 

Download the database dependent same patch level  archive by selecting the database  

Now, We have SAPEXE_*.SAR and SAPEXEDB_*.SAR 

Perform backup of directory  

UNIX:        /sapmnt/<SID>/exe/uc/linuxx86_64

WINDOWS:   <DRIVE>:\usr\sap\<SID>\SYS\exe\uc\NTAMD64

                       Ex. F:\usr\sap\SID\SYS\exe\uc\NTAMD64

Extract Kernel Archives

 Extract the files in some other directory and then copy all contents to actual kernel directory as mentioned above.

Option 1.

Create new directory anywhere and extract the archives. It is recommended to run this  through SIDADM user.

SAPCAR -xvf  <Download_Archive_Location>/"SAPEXE*.SAR" -R <NEWKERNEL_DIR>

Ex. SAPCAR -xvf  /software/KERNEL/"SAPEXE*.SAR" -R /software/NEWKERNEL

then Copy extracted content to Kernel directory

cp -rvf  /<DIR>/NEWKERNEL/*  /sapmnt/<SID>/exe/uc/linuxx86_64/

Ex. cp -rvf  /software/NEWKERNEL/*  /sapmnt/<SID>/exe/uc/linuxx86_64/

Option 2.

Extract the archives directly into /sapmnt/<SID>/exe/uc/linuxx86_64/

Run this  through SIDADM user.

Change directory to /sapmnt/<SID>/exe/uc/linuxx86_64/

cd /sapmnt/<SID>/exe/uc/linuxx86_64/

the extract the archives

SAPCAR -xvf  /<Download_Archive_Location>/"SAPEXE*.SAR"

Ex. SAPCAR -xvf  /software/KERNEL/"SAPEXE*.SAR"

## For windows you can extract and copy paste as required. Kernel directory for windows - 

WINDOWS:   <DRIVE>:\usr\sap\<SID>\SYS\exe\uc\NTAMD64

Post Activities

This is Good practice to fix the permission, Run the script to root user to fix the permission.

 /usr/sap/<SID>/SYS/exe/run/saproot.sh  <SID>

Ex.  /usr/sap/PEP/SYS/exe/run/saproot.sh  PEP