The DBVERIFY Utility
An OS executable (dbv in $ORACLE_HOME/bin) used to verify datafiles
Works against datafiles, live or backup, But doesnot work on Backup sets...
Works for datafiles on raw devices but you must give it a range of blocks to look at.
In the output, it refers to blocks as “pages”. Block 5 would be page 5.
RMAN performs its own validation when backing up so dbv is not necessary. It can be used on user backups (aka non-RMAN backups).
If a block is “influx” then DBV was forced to check it multiple times because it was in use.
Its most asked Interview Question!
Ravi Prakash
http://ravidba-oracle.blogspot.com/