I have found two discussion which mention that we have to setup database trace but how is the question? if some one can please help me out step by step setting up the trace on odata service, links are as follows
Manage multi-table insert using OData Service
Where can I see logs of OData Service usage?
in aforesaid discussion they have said plz give path to xsa:<package path> but when i go to database trace config there is no option where i can give the path so please help...