- How much you sent to the server : bytes received via SQL*Net from client
- How much the server send to you : Oracle Database - bytes sent via SQL*Net to client
- How much SQL*Net mesages are sent to and received from the client : Oracle Database - SQL*Net roundtrips to from client. This includes round-trips for fetches from a multiple-row result set.
the data sent to you ?
- by selecting only the columns that are relevant to you. No select * from.