Oracle's "dbv" : how frequently do you use it ?

Yesterday, there was a server crash when the storage went "offline" at my site. The engineers were able to bring the storage back after a few hours and then ran "fsck" on the uFS file systems.
I then started up the Oracle Database. Out of curiosity, I ran "dbv" on all the datafiles
[online with the database open]. Only one page
[an Index block] was reported as "Failing". I then
rebuilt the Index [it was recreated to a different location]. Rerunning dbv I still saw the same error on the same block. As this block was now in a free extent, I wasn't concerned -- a new extent allocation would format the block when required.

So now I am curious. How frequently do people run "dbv" ? Only after crash recovery OR Regularly on Open Databases ?
I am thinking of setting up jobs to run "dbv" on critical databases regularly but would like to look for field experiences.

Hemant K Chitale
http://hkchital.tripod.com

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Author: Hemant K Chitale
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