Support Pack Stack

hi,
can any body please tell
what is support pack stack?
is it contains patchs for ABAP and JAVA stacks or only for JAVA?
can we patch for java individual component?
   i know how to apply through JSPM.
thanks inadvance,
regards,
raju.

Raju,
The SP Stacks are sets of Support Packages and patches for the respective product version that must be used in the given combination.
They are for ABAP and Java.
In general, when applying support packages, you always have to apply the complete Support Package Stack.
Patches to a specific Support Package can be installed individually.
For example, if you are on SP Stack 12 and need Support Package 14 for a certain component, you have to apply the complete Support Package Stack 14.
If you just need a patch for Support Package 12 of a certain component, you can just apply the patch, as long as it is Support Package 12.
More details here https://service.sap.com/sp-stacks
Thanks,
Dieter

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