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本篇內(nèi)容主要講解“如何查看oracle統(tǒng)計(jì)信息收集”,感興趣的朋友不妨來(lái)看看。本文介紹的方法操作簡(jiǎn)單快捷,實(shí)用性強(qiáng)。下面就讓小編來(lái)帶大家學(xué)習(xí)“如何查看oracle統(tǒng)計(jì)信息收集”吧!
查看統(tǒng)計(jì)信息收集時(shí)間:
alter session set NLS_DATE_FORMAT='YYYY-MM-DD HH24:MI:SS';
select t.TABLE_NAME,t.NUM_ROWS,t.BLOCKS,t.LAST_ANALYZED from dba_tables t where owner='SAPSR3' and table_name in ('ZWD_JDMSG_GD','ZB2C_KUCUN_LOG');
刷新數(shù)據(jù)庫(kù)監(jiān)控信息:
exec dbms_stats.flush_database_monitoring_info;
查看統(tǒng)計(jì)信息是否過(guò)期(stats為yes為過(guò)期)
select owner,table_name,object_type,stale_stats,last_analyzed from dba_tab_statistics where owner='SAPSR3' and table_name in ('ZHLES_LOG_JPD','ZJHT0005_LOG');
查看過(guò)期原因:
select table_owner,table_name,inserts,updates,deletes,timestamp from all_tab_modifications where table_owner='SAPSR3' and table_name in ('ZHLES_LOG_JPD','ZJHT0005_LOG');
統(tǒng)計(jì)信息收集:
exec DBMS_STATS.GATHER_TABLE_STATS(ownname => 'SAPSR3',tabname => 'ZWD_JDMSG_GD',estimate_percent => DBMS_STATS.AUTO_SAMPLE_SIZE, method_opt => 'for all columns size repeat',degree => DBMS_STATS.AUTO_DEGREE,cascade=>TRUE );
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