Kernel Upgrade

Hi,
Download Latest SAP kernel From Service Market Place:
1. Copy the patch into a temporary directory on your system.
2. Unpack the patch using SAPCAR.
3. Stop the SAP System. (With NT you may also have to stop the SAP services using the Control Panel).
4. Save the kernel directory by backup or by copying into a separate backup directory.UNIX: /usr/sap//sys/exe/run NT: :\usr\sap\\sys\exe\run If you use a 4.6D-based SAP system (64-bit, non-Unicode) or a SAP system 6.20 or higher (32-bit or 64-bit, Unicode or non-Unicode), there are also the following kernel directories:NT: :\usr\sapsys\exe\nuc\ (Non-Unicode)NT: :\usr\sapsys\exe\uc\ (Unicode)
5. This way, you will always have the option to return to the old kernelversion if problems occur with the new patch.
6. Copy or move the unpacked programs into the SAP kernel directory.
For Complete Info Follow SAP NOTE 19466

Kernel Upgrade on Unix Systems:

A lot of people have questions ? answer are even available... but still... even experienced basis admin having trouble now with Kernel Upgrade Here I am Sharing My Experience To Upgarde Kernel On Unix!
1) stopsap
2) clean shared memory
3) saposcol -k
4) ps -ef grep sapstartsrv
5) kill
6) cleanipc
7) lsnrctl stop
8) backup your kernel
9) cd /sapmnt/
10) cp -pr exe exe.001
11) extract new kernel
12) cd exe
13) SAPCAR -xvf
14) Start saposcol
15) startlistener
16) startsap
That's all but still sometimes there are some issues and all of you are welcome to share your views.......
Regards,
Srinivasa Rao Arjala