UNIX: Upgrading the Server (Interactive) 
You can perform an
interactive upgrade of the database software (server and client) on UNIX/Linux operating systems with the installation file SDBINST.Conventions
VariablesPrerequisites
Procedure
SAP DB OLTP database instance type
APO LiveCache for the
liveCache database instance type (for the SAP APO System)
All of the existing installations are listed. If there is more than one, choose which of the installations you want to upgrade.
Enter the number of this installation.
Result
All the required data has been specified and checked. The
software packages are installed and registered. You can check the result of your installation using the log (Logging).Next Step
UNIX: Additional Steps