Executable is "dbv"

It cannot be run against "control files" and "redo log files"

This tool is mostly used to verify database backup files are in good condition without any corruption.

"dbv" may not be used for files larger than 2GB in size. (Refer metalink doc:

Help of dbv

$ dbv help=y

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Verify the system tablespace datafile system01.dbf

$dbv file=system01.dbf blocksize=8192

(blocksize is the block size of the database)

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Save the output of dbverify

$dbv file=system01.dbf blocksize=8192 loffile=dbv_output.log

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List complete block verification

$dbv file=system01.dbf blocksize=8192 feedback=1

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useful Oracle metalink document

1) Doc ID: Note:35512.1 Subject: DBVERIFY - Database file Verification Utility