How does one allocate more OS memory to the SGA?

Login as Oracle, and then:

• $ORACLEINS - choose option RECONFIGURE EXISTING PRODUCTS
• Prompt for default directory - accept or specify new directory
• Prompt for the location of the SAVE SET - accept or specify new directory
• Display "Doing some setup" will appear - when finished press ENTER
• Choose Software Installation and Upgrade Menu
• Choose Build Configuration Options
• Choose RDBMS Option
• Modify the value for SGA PAD
• When back at prompt choose REBUILD
• Exit (E option)
• Choose option Build Selected Products
• When relinking is finished exit out of the menu