网上有帖子说dbv不能检查裸设备数据文件，今天试验了一下，这个应该是可以的:
$  dbv file=/dev/rsysaux_4g  blocksize=8192

DBVERIFY: Release 10.2.0.4.0 - Production on Tue Jul 20 11:18:42 2010

Copyright (c) 1982, 2007, Oracle.  All rights reserved.

DBVERIFY - Verification starting : FILE = /dev/rsysaux_4g


DBVERIFY - Verification complete

Total Pages Examined         : 261888
Total Pages Processed (Data) : 69327
Total Pages Failing   (Data) : 0
Total Pages Processed (Index): 56225
Total Pages Failing   (Index): 0
Total Pages Processed (Other): 54968
Total Pages Processed (Seg)  : 0
Total Pages Failing   (Seg)  : 0
Total Pages Empty            : 81368
Total Pages Marked Corrupt   : 0
Total Pages Influx           : 0
Highest block SCN            : 783064225 (4.783064225)

是在aix上的；

这方面将继续跟踪