During this test server tuning session , database engine tuning advisor makes minimal calls to your production server to retrieve information about its hardware profile , database metadata , and statistics to help the query optimizer accurately optimize queries on the test server 在此測(cè)試服務(wù)器優(yōu)化會(huì)話期間,數(shù)據(jù)庫(kù)引擎優(yōu)化顧問對(duì)生產(chǎn)服務(wù)器進(jìn)行最少次數(shù)的調(diào)用來(lái)檢索其硬件配置文件、數(shù)據(jù)庫(kù)元數(shù)據(jù)和統(tǒng)計(jì)信息的相關(guān)信息,幫助查詢優(yōu)化器在測(cè)試服務(wù)器上準(zhǔn)確優(yōu)化查詢。