commit	[1,10]
rollback	[1,2,10,20]
no nested	[1,10]
on exception before start	[1,3,10,30]
on exception while processing	[1,4,10,40]
on session close	[1,6,10,60]
commit	[1,7,10,70]
readonly	[1,7,10,70]
snapshot	2	8
snapshot1	0	0
snapshot3	1
snapshot100500	2	8