What is the difference between emulated and non-emulated datasources ?
Emulated datasource – The pre-installed default data source is an emulated data source. Emulated data sources are wrappers around Oracle data sources. Used primarily by applications that access only a single database. Non-emulated datasource – Non-emulated data sources are pure Oracle data sources. Used by applications that want to coordinate access to multiple sessions within the same database or to multiple databases within a global transaction.