KERNEL UPGRADE STEP BY STEP

1. Check the existing kernel level by logging into SAP level

SM51 ->Release notes

OR

go to command level and execute disp+work ( Login as ADM to perform this task)

2. check the Kernel levels available in SAP service market place

http://service.sap.com/swdc

Downloads-Download -> Support package and patches -> Entry by Application Group ->Additional components -> SAP Kernel-> SAP Kernel 32 bit->SAP Kernel 6.40 32 bit-SAPKERNEL 32 bit->Windows server on IA32bit->Database Independent

Select SAPEXE_(latest patch number)_*.SAR and click on add to download basket from the button.

Repeat above step to down load Database Dependent kernel by selecting the database you have/want.

Select SAPEXEDB__*.SAR and click on Add to download basket.

3. now launch download manager from your system and down load the SAPEXE* and SAPEXEDB* to your local drive. (e.g. G:\Kernelupgrade)

4. Now extract the .SAR files from command prompt

cd G:\kernelupgrades

G:\Kernel upgrade>sapcar -xvf SAPEXE_1773-10001664.SAR

G:\kernelupgrades\>sapcar -xvf SAPEXEDB_1773-10001667.SAR

5. Now check the number of files in G:\kernelupgrade (e.g. 115 files)

6. go to C:\usr\sap\S11\SYS\exe\run

7. check the number of files ( e.g. 124 files)

Take a backup of existing Kernel by stopping the services using following method

8. stopsap on target system

login as adm

#stopsap (unix)

In Windows/NT: go to desktop > double click on SAP Management Console

Select the server

Click on stop

Wait for SAP to be stopped

9. stop all sap service and database service from

Windows/NT: Programs->Administrative Tools ->services->

Stop TNSlistner server for oracle

stop oracleserviceS11 for oracle

stop SAPS11_00 for SAP

stop SAPOSCOL for SAP

stop if any other oracle service is running.

Select the service ->right click -Stop

10. Now take backup of your old kernel directory (use OS level copy command)

Copy run folder to G:\kernelbackup

11. go to Kernel-upgrade folder

12. Copy all the contents from this folder and paste it into c:\usr\sap\\SYS\exe\run

13. check the kernel patch by typing disp+work at command level

14. Start all sap and database services from Programs->Administrative Tools->services->

Start TNSlistner server for oracle

Start oracleserviceS11 for oracle

Start SAPS11_00 for SAP

Start SAPOSCOL for SAP

Select the service ->right click -Start

15. Start sap on Server now

Windows/NT: SAP Management Console (MMC)->select Server->click on start button from top menu. Check for green light on servers

UNIX: startsap

16. Now login to sap from saplogon menu and see you are able to login successfully.

17. Double check the kernel patch level by executing SM51 -> Release Notes

18. Kernel upgrade is completed.

Confused? Feel free to ask

Your feedback is always appreciated.I will try to reply Ur queries as soon as time allows.
Regards,
SAPhelpdesk