Oracle 分區的原則

原創 tylz04 2020-06-24 05:38
1.表的大小：當表的大小超過2GB，或對於OLTP系統，表記錄超過1000萬時，都應該考慮對錶進行分區
2.數據訪問特性：基於表的大部分查詢應用，只訪問表中少量的數據。對於這樣的表進行分區，可充分利用分區排除無關數據查詢的特性
3.數據維護：按時間段刪除成批的數據，對於這樣的表需要考慮進行分區，以滿足維護需要
4.數據備份和恢復：按時間週期進行表空間備份時，將分區與表空間建立對應關係
5.只讀數據：如果一個表中大部分數據都是隻讀，通過對錶進行分區，可將只讀數據存儲在只讀表空間，對於數據的備份有利
6.OLAP並行數據操作
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