gathering statistics on Oracle DB

Here comes a script to gather statistics on Oracle DB

begin

  dbms_stats.unlock_schema_stats('SCHEMA');
  dbms_stats.delete_schema_stats('SCHEMA');
  dbms_stats.gather_schema_stats(ownname       => 'SCHEMA',
                                estimate_percent => 40.0,
                                granularity      => 'GLOBAL',
                                block_sample     => TRUE,
                                cascade          => TRUE,
                                degree           => DBMS_STATS.DEFAULT_DEGREE,
                                method_opt       => 'for all columns size 1');

  dbms_stats.lock_schema_stats('SCHEMA');

end;



select t.owner, t.table_name, t.last_analyzed from dba_all_tables t
where lower(t.owner) = 'your_schema';