Oracle Database for Windows uses initialization parameters to enable various features of the database every time an instance is started.

• Overview of Initialization Parameter File
  An initialization parameter file is an ASCII text file containing parameters.
• Using Sample File for Database Creation
  Oracle Database provides an annotated sample initialization parameter file with alternative values for initialization parameters.
• About SGA_MAX_SIZE Parameter
  Parameter SGA_MAX_SIZE holds the maximum size that System Global Area (SGA) can reach for a particular instance.
• Overview of Initialization Parameters Without Windows-Specific Values
  Describes the overview of initialization parameters.
• Displaying Initialization Parameter Values
  Learn how you can view Windows-specific parameter values.
• About Unmodifiable Database Initialization Parameters
  Check the initialization parameters in the Unmodifiable Database Initialization Parameters when creating a new database.
• About Calculating Database Limits
  Use the size guidelines in this section to calculate Oracle Database limits.