Lock Table Overflow

I just started getting an error 915 "Lock table overflow-increase -L on
server". I think I can manage to get the -L number changed on the server,
but I was wondering what causes this. Anyone able to shed some light on
this issue for me?
Thanks,

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Nora Story Spectra Technologies
Project Administrator 1505 Royal Parkway
Phone: 817-540-4475 ext.105 Euless, Texas 76040
Fax: 817-540-4439 Nora_Story@...
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