Jira issue originally created by user @lsmith77: It seems like beginTransaction() counts transaction nesting levels, but it doesnt set a savepoint when starting a new nesting level, nor does it ...

Abstract: In this paper, we have extended multi-version concurrency control mechanisms for long-duration transaction based on nested transaction model, and explained how both intra- and ...

Abstract: In this paper, we present a study on the concurrency control and recovery algorithms in nested transaction environment. We have reviewed the work done in the area of nested transaction ...

ACTUAL: Asset balance now is -140. It seems every update will cause balance update, so parent transaction is updated from 100 to 120, so -20 is added, than each part is updated from 50 to 60, so -10 ...