Difference between Kernel release upgrade and Kernel patch upgrade

[rajarshic]

Hi,

1. Please let me know the differences between Kernel release upgrade and Kernel patch upgrade if there is at all.

2. Generally we would extract the new kernel in some directory and then cut paste the new executables into the global kernel direcory followed by the instance specific kernel directories. My doubt is that during this process many executables will be replaced and some of the old one will continue to remain. What is the significance of the old executables? Do we need to retain them or remove them? Whatever kernel upgrades I've done, I retained the old executables and we never faced issues.

Thanks

[S_Sriram]

Hi Rajarshi

1. Please let me know the differences between Kernel release upgrade and Kernel patch upgrade if there is at all.

Kernel release upgrade - New kernel level has been released for current kernel level. e.g. kernel 7.00 to 7.20

Kernel Patch upgrade - New patch for existing kernel e.g - Kernel 7.20 with patch level 200 to 500

2. Depending on kernel release you may have to follow certain different steps other than generics.You may require to follow the relevant kernel release SAP note or KBA

BR

SS