How do I know if SELECT stmnt was issued on a specific Table?

Question

Hi,
I have a Reporting environment where the tables get populated by selective information from production database through batch scripts. These tables have become HUGE over time and the management wants to know if any user is using the table or else drop them. A USER will only issue a SELECT command and is not responsible for any INSERT/UPDATE/DELETE so querying the table DBA_TAB_MODIFICATIONS isn't of much help.
My question is: Is there a way to find out if any of the tables under concern had been queried (using SELECT) in the recent past???
Thanks in advance!
Arindam

Answer 1

Hello,
Best option is to use fine-grained auditing and once collected information you can drop that policy ; Using full fledged auditing will be an overkill.
GRANT SELECT ON dba_fga_audit_trail TO <username>;
grant exexute on dbms_fga to <username>;
declare
BEGIN
   DBMS_FGA.add_policy (object_schema => 'SCHEMA_NAME',
                        object_name => 'TABLE_NAME',
                        policy_name => 'TABLE_DML',
                        enable => TRUE,
                        statement_types => 'SELECT',
                        audit_trail => DBMS_FGA,
                        audit_column_opts => DBMS_FGA.any_columns
END;
/http://www.oracle-base.com/articles/10g/Auditing_10gR2.php#fine_grained_auditing
Regards