Procedure of updating oracle parameters in spfile

Oracle has two parameter files from which it reads while it's beginning .

They are spfile (server parameter file) and pfile (parameter file). Spfile is binary format file where manual changes are not allowed.
Below document shows us the procedure on the way to change/update the oracle parameters in spfile.

This procedure is on linux operating system.

Take a backup of pfile and spfile

Create pfile from spfile

Make the changes to the pfile by editing the file

The init<orasid>.ora file has been edited by inserting the required  parameters

Stop SAP only

Shutdown DB

Startup Database in mount state by giving the pfile path

Create spfile from pfile

Shutdown DB

Start DB

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Start SAP