Hi Aleks,
Assuming your Kernel Release is 720_REL 64B UNICODE for IDES ERP6 EHP6, latest patch of Kernel on SMP is Patch 402 under path:
SAP Market Place => Software Downloads => Support Packages & Patches => A-Z Index => K => SAP Kernel 64 Bit Unicode => SAP KERNEL 7.20 64-BIT UNICODE => <Your OS>
Further check your R3trans/tp version using R3trans -V/ tp -V (Should be same as that of your Kernel i.e. 720_REL 64B UNI) and you can get the latest patch same as in above path, just extend it further to Database Independent i.e.
SAP Market Place => Software Downloads => Support Packages & Patches => A-Z Index => K => SAP Kernel 64 Bit Unicode => SAP KERNEL 7.20 64-BIT UNICODE => <Your OS> => #Database independent
Latest R3trans and tp both are at patch level 437
I hope you got the Kernel right on!
Check your SPAM/SAINT Release in initial screen of t-code SPAM
For SPAM/SAINT Release 731, latest patch is 50, as per below path:
SAP Market Place => Software Downloads => Support Packages & Patches => Browse our Download Catalog => Additional Components => SAP SPAM/SAINT Update => SPAM/SAINT Update 731 => Support Packages
When you update the Kernel, the R3trans/tp bundled with that Kernel release comes into the system, but the thing is that R3trans & tp patches are developed and released more frequently than the bundled kernel release, so its always crucial to be on the latest R3trans/tp for SAP Upgrade activity i.e. You might on be the latest Kernel 402, but still your R3trans might not be latest 437, so do that explicitly.
All the path details are mentioned above with the screen-shots, you should be able to get that now!
BASIS Updates! Hmmmm.. Tell you frankly, these are the longest painstaking patches.
My suggestion, apply one patch at a time or max two, dont go for the whole queue unless you believe in your system's capacity. We have a decently powered server 4 Cores, 32 Gigs Mem, 64G Swap and we observed the optimum was taking two Basis patches at once and nothing else along with them. So here you go, apply BASIS stand-along as the first in seq. taking 1 or 2 at a time.
Make sure you have a full backup.
Did you monitor the work processes, checked the logs?
Something must be pointed out if it got stuck somewhere.
Couple of key checks:
1) Monitor File System
2) Monitor Work Processes
3) Check if logs are updating or not.
4) Check Oracle Alert log and SAP Work logs
-Akshay