Oracle分析和计算表的碎片情况




-- 查询表的碎片情况
SELECT table_name,
       round((blocks*8),2) as "Size (KB)",
       round((num_rows*(avg_row_len/1024),2)) as "Actual Data (KB)"
  FROM user_tables
 WHERE table_name = 'YOUR_TABLE_NAME_IN_UPPERCASE';
 
-- 查询表的碎片情况的扩展信息
SELECT table_name,
       round((blocks*8),2) as "Size (KB)",
       round((num_rows*(avg_row_len/1024),2)) as "Actual Data (KB)",
       round((blocks*8) - (num_rows*(avg_row_len/1024)),2) as "Wasted Space (KB)"
  FROM user_tables
 WHERE table_name = 'YOUR_TABLE_NAME_IN_UPPERCASE';

替换YOUR_TABLE_NAME_IN_UPPERCASE为你需要查询的表名，并确保表名是大写的，因为Oracle中的用户表是大小写敏感的，并且在数据字典中表名通常是大写的。

Oracle分析和计算表的碎片情况

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