需要注意:dbv 检测controlfile可能不准

oracle dbv工具是Oracle数据库离线检测坏块的工具主要是用来检测数据文件坏块(物理和逻辑坏块),虽然在一定程度上面可以检测controlfile的坏块,但是不是特别准,在一次恢复案例中数据库启动报controlfile损坏,但是dbv检测是正常的
数据库在mount的过程中报controlfile 损坏ORA-00227

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把控制文件从asm里面拷贝到文件系统,然后通过dbv进行检测,一切正常

[oracle@oracle1 ~]$ dbv blocksize=16384 file=/tmp/control01.ctl 

DBVERIFY: Release 11.2.0.4.0 - Production on Wed Jul 1 14:21:58 2026

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

DBVERIFY - Verification starting : FILE = /tmp/control01.ctl


DBVERIFY - Verification complete

Total Pages Examined         : 1312
Total Pages Processed (Data) : 0
Total Pages Failing   (Data) : 0
Total Pages Processed (Index): 0
Total Pages Failing   (Index): 0
Total Pages Processed (Other): 395
Total Pages Processed (Seg)  : 0
Total Pages Failing   (Seg)  : 0
Total Pages Empty            : 917
Total Pages Marked Corrupt   : 0
Total Pages Influx           : 0
Total Pages Encrypted        : 0
Highest block SCN            : 4294967295 (65535.4294967295)

这个故障通过重建ctl,打开数据库成功