SESSION I/O BY USER NOTES:
Username - Name of the Oracle process user
OS User - Name of the operating system user
PID - Process ID of the session
SID - Session ID of the session
Serial# - Serial# of the session
Physical Reads - Physical reads for the session
Block Gets - Block gets for the session
Consistent Gets - Consistent gets for the session
Block Changes - Block changes for the session
Consistent Changes - Consistent changes for the session