Why would NetBootClientHelper exit and respawn ever 10 seconds?

My console log has this every 10 seconds.
8/2/12 11:26:58 AM
com.apple.launchd[1]
(com.apple.NetBootClientHelper[15754]) Exited with exit code: 1
8/2/12 11:26:58 AM
com.apple.launchd[1]
(com.apple.NetBootClientHelper) Throttling respawn: Will start in 10 seconds
To me, this seems as if something as gone arwy.  The reason that I was there is that I've noticed that some of my software is "pulsy", about every 10 seconds.  Is this NetBootClientHelper useful for someone who does not do any net booting?  How would one disable it?

Do you have some sort of horrific network connection between the client and the database such that it would take 8.5 seconds to transmit a few kb of SQL to the server?  That seems most unlikely.
How are you determining the query plan?  Are you absolutely sure that both SQL statements have the same plan_hash_value when they are actually executed (not just when you generate a query plan without executing it)?  What are the differences in wait events when you execute the two?
The sql_id will change when you add or remove whitespace.  There are various methods of modifying query plans that are tied to a sql_id.  My wager would be that you have a profile/ outline/ etc. that is not there for the reformatted one which is causing a query plan difference.  My next guess is that you have an accepted plan for the old statement, you haven't set up a process to let the plan evolve, and the reformatted statement starts with the plan that the old statement would get if you allowed the plan to evolve.
Justin

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