Comments on: record locking in As/400 http://itknowledgeexchange.techtarget.com/itanswers/record-locking-in-as400/ Wed, 22 May 2013 12:21:28 +0000 hourly 1 By: yorkshireman http://itknowledgeexchange.techtarget.com/itanswers/record-locking-in-as400/#comment-97489 yorkshireman Thu, 06 Oct 2011 07:14:33 +0000 #comment-97489 Don’t lock the record.

Don’t ever write anything that locks a record – ever.

Except just before you update it.

read and display
read and display
decide an update is needed

read the record for update (lock)
check it hasn’t changed since you displayed it ( tell the user if so)
updtae it
release the lock

read and display
read and display
bl hblah

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