For ease of use with SQL*Plus, create a parent folder above this one on your OS, and set that folder as your default startup folder for SQL*Plus. You may wish to create the following file in this top-level folder which has some useful prompt and display column formatting.

Oracle 9i and 10g Parent Folder Script(s)
Generic prompt and display columns script

Oracle 9i and 10g System Performance Scripts
Column definitions, used by all scripts
Clear column definitions, used by all scripts
Currently accessed objects
Active transactions
Buffer statistics
CPU usage by session
Currently executing SQL
Locks in place
PGA status
Pool statistics
Session statistics
Session wait events
Sorts in memory and on disk
Shared pool memory usage
System wait events