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user_tab_modifications
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USER_TAB_MODIFICATIONS describes modifications to all tables owned by the current user that have been modified since the last time statistics were gathered on the tables
no rows selected 2.SQL> insert into t values(1); 3.commit; 4.SQL> select * from user_tab_modifications; no rows selected why? because you need to wait for a moment,or you have'd executed the procedure dbms_stats.flush_database_monitoring_info(). 5.exec dbms_stats.flush_database_monitoring_info() 6.
1.SQL> select * from user_tab_modifications;
SQL> select * from user_tab_modifications;
you will get the expected result.
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