Installing and Updating Software on
UNIX 
You
are installing or updating a chosen installation
profile or SAP DB software component. Use the
following procedure for updates only if no
database instances
refer to the installation path of the software that you want to
update.

If database instances refer to the installation path of the software, you must update the database instances together with the software (Updating Database Instances and Their Software). Otherwise, you risk making the database instances incompatible with the database software, and you will not be able to run them.
The system logs the installation process.
...
1. First, unpack the SAP DB software to a local directory.
Unpacking the Software on UNIX
2. Now decide whether you want to perform an interactive installation (only possible for installation profiles) or a background installation.
¡ Interactive Installations/Updates on UNIX
¡ Background Installations/Updates on UNIX
For the advantages and disadvantages of these
installation procedures, see
Installing and
Updating SAP DB Software.