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数据库缓冲区高速缓存中块的类型
2022-08-08 03:23:00 【青木与风】
数据库缓冲区高速缓存中块的类型分别有 Pinned、Clean、Free 和 Dirty。
Pinned 是正在读写的数据块。
Clean 是和数据文件保持一致的数据块。
Free 是从未使用的数据块。
Dirty 是修改过的、和数据文件不一致的数据块。
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