re[eclipselink-users] ading entities as other writes to the database hap

[ageing student <rsherman315@xxxxxxxxxxx>]

Hi,

I have a requirement to read several unrelated entities. The relative state
of the loaded entities should be as at a specific point in time i.e. the
start of the read operation. Meanwhile other servers may be writing to the
database and I don't wish to include any writes that occur after the read
transaction has started. 

So if I want to load entities A and B, but whilst I'm loading entity A
someone else writes an update to entity B, when I move on to load entity B I
wish to load the data prior to the update.



I think that using isolation levels is the way to go but am unclear on their
use.
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