how to upgrade kernel in sap?

Answer 1

Check the Help Support Portal
http://help.sap.com/saphelp_erp2005/helpdata/en/86/45ff12c3b44f088298e03aedf5bc28/frameset.htm

Import Support Package Stacks


SAP ships quality enhancements, program corrections, and updates for SAP NetWeaver in Support Packages. Support Packages are grouped in Support Package Stacks (SP Stacks), which can include both ABAP and Java Support Packages and Kernel Patches. When released, an SP Stack contains the optimum combination of Support Package and Patch levels for all NetWeaver components. The Support Packages and Patches listed in an SP Stack must be implemented together. There is a new SP Stack each quarter.

Support Package Stacks are available on SAP Service Marketplace at service.sap.com/sp-stacks. Here, you can also see information about the availability of SP Stacks and the Support Package Stack Guide. This guide gives you detailed information about importing Support Package Stacks. It is updated for each new SP Stack.


Support Package Manager (ABAP)

Java Support Package Manager