You can perform auditing on Data Pump jobs in order to monitor and record selected user database actions. Data Pump uses unified auditing, in which all audit records are centralized in one place.
To set up unified auditing you create a unified audit policy or alter an existing policy. An audit policy is a named group of audit settings that enable you to audit a particular aspect of user behavior in the database. To create the policy, use the SQL CREATE AUDIT POLICY statement.
After creating the audit policy, use the AUDIT and NOAUDIT SQL statements to, respectively, enable and disable the policy.
Oracle Database SQL Language Reference for more information about the SQL CREATE AUDIT POLICY,ALTER AUDIT POLICY, AUDIT, and NOAUDIT statements
Oracle Database Security Guide for more information about using auditing in an Oracle database