DBA_TAB_MODIFICATIONS describes modifications to all tables in the database that have been modified since the last time statistics were gathered on the tables. Its columns are the same as those in "ALL_TAB_MODIFICATIONS".
Note:
This view is populated only for tables with the MONITORING attribute. It is intended for statistics collection over a long period of time. For performance reasons, the Oracle Database does not populate this view immediately when the actual modifications occur. Run the FLUSH_DATABASE_MONITORING_INFO procedure in the DBMS_STATS PL/SQL package to populate this view with the latest information. The ANALYZE_ANY system privilege is required to run this procedure.
See Also:
Oracle Database PL/SQL Packages and Types Reference for more information about the FLUSH_DATABASE_MONITORING_INFO procedure in the DBMS_STATS PL/SQL package