>in the config i am setting to 7. I am assuming that is global setting. What is happening is every once in awhile we are getting false corruption error messages. Also suspect that during some heavy query use on a server with only 10K spindle drives (3), that the reads are maxing out and it seems we get a disconnect from the server and because of that our error reporting is thinking of table corruptions. (Fox DBC's)
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>Is there extra overhead with the tablevalidate set to 7?

I don't think that overhead is significant enough to take it into account.