As an alternative (sorry for the fragmented posting, it's been a long day), you might want to look into what those jobs are doing, and see if there's a better way to accomplish it than by running them so frequently. It's unusual to have enough updates to that table for it to matter at all, much less cause measurable issues.
- Gus "GSquared", RSVP, OODA, MAP, NMVP, FAQ, SAT, SQL, DNA, RNA, UOI, IOU, AM, PM, AD, BC, BCE, USA, UN, CF, ROFL, LOL, ETC
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"Nobody knows the age of the human race, but everyone agrees it's old enough to know better." - Anon