>>Are you trying to do this on a Novell NOS? You'll have to up the lock count somewhere in the NOS, the default is 500, I think.
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>Fred,
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>I think we already did update the lock count. We had an issue with Novell 5 and Client32 which we finally solved by upgrading the Client. BTW, this mess only happens when wrapping updates in TRANSACTIONS. Everything seems to go OK otherwise. Weird, ain't it?

No, not really. A transaction tries to do all the updates at once, so if you've really got 1050 records to update, you'd need (at least) 1050 locks. You might need to investigate another method of accomplishing your goal, but it still sounds like a lock count problem to me.