Oracle SQL from Java using Spring returns nothing, and doesnt throw exception -

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i have java code uses spring connect , execute sql on oracle db. have query takes long time execute (20 minutes or more). have executor service , has thread execute query , process results. if put timeout db , spring, system time out correctly return nothing else before that. if run query sql plus, return values. time out set 3 times takes execute on sql developer.

any ideas!?

assuming spring query using bind variables, using bind variables when execute query in sql*plus/ sql developer? or using literals?

what version of oracle using?

have checked see whether query plans 2 environments different?


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