1.设置并行收集
SQL> set timing on
SQL> exec dbms_stats.set_global_prefs('CONCURRENT','TRUE');
PL/SQL procedure successfully completed.
2.开始收集全库统计信息
begin
dbms_stats.gather_database_stats(ESTIMATE_PERCENT=>DBMS_STATS.AUTO_SAMPLE_SIZE, method_opt => 'for all indexed columns', cascade=>true, degree=>120);
end;
/
PL/SQL procedure successfully completed.
Elapsed: 00:03:52.55
3.关闭并行收集
SQL> exec dbms_stats.set_global_prefs('CONCURRENT','FALSE');
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.03
SQL>版权声明：本文为博主原创文章，未经博主允许不得转载。
Linux,oracle
