Why DBV showed incorrect block numbers
I got a interesting case as below :
1.Customer noticed a data file blocks calculation result is incorrect by DBV utility :
$dbv file=rlv_8g_data15 blocksize=8192
DBVERIFY: Release 11.2.0.3.0 - Production on Thu Jan 24 17:35:17 2013
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
DBVERIFY - Verification starting : FILE = /dev/rlv_8g_data15
DBVERIFY - Verification complete
Total Pages Examined : 524288 <<<<====================================half number of the total blocks in the datafile
......
2.In Rman and database dictionary views the info are correct :
RMAN> backup validate check logical datafile 19;
Starting backup at 24-JAN-13
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
1.Customer noticed a data file blocks calculation result is incorrect by DBV utility :
$dbv file=rlv_8g_data15 blocksize=8192
DBVERIFY: Release 11.2.0.3.0 - Production on Thu Jan 24 17:35:17 2013
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
DBVERIFY - Verification starting : FILE = /dev/rlv_8g_data15
DBVERIFY - Verification complete
Total Pages Examined : 524288 <<<<====================================half number of the total blocks in the datafile
......
2.In Rman and database dictionary views the info are correct :
RMAN> backup validate check logical datafile 19;
Starting backup at 24-JAN-13
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
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