https://www.xifenfei.com/2013/10/db_block_checksum%e5%ae%9e%e8%b4%a8%e6%98%af%e9%80%9a%e8%bf%87flg_kcbh%e6%9d%a5%e6%8e%a7%e5%88%b6block-checksum.html 提供7*24专业数据库(Oracle,SQL Server,MySQL,PostgreSQL等)恢复和技术支持@Tel:17813235971 Thu, 11 Dec 2025 02:46:14 +0000 hourly 1 https://www.xifenfei.com/2013/10/db_block_checksum%e5%ae%9e%e8%b4%a8%e6%98%af%e9%80%9a%e8%bf%87flg_kcbh%e6%9d%a5%e6%8e%a7%e5%88%b6block-checksum.html/comment-page-1#comment-3512 Sun, 20 Oct 2013 11:51:14 +0000 https://www.xifenfei.com/?p=4828#comment-3512 这个在研究块结构的时候发现了，但是没有仔细想
KCBHFNEW BIT 0×01 // new block – zeroed data area
KCBHFDLC BIT 0×02 // Delayed Logging Change advanced SCN/seq
KCBHFCKV BIT 0×04 // ChecK Value saved – block xor’s to zero
KCBHFTMP BIT 0×08 // Temporary block.
0×06=0×02+0×04 KCBHFDLC+KCBHFCKV

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