I've solved this issue by checking the Exception tree if there is an ORA-03114 error. If so I wait one minute (could probably be shorter but I didn't check that) and redirect back to the Database node ...
I am not sure that odbc.ini gives much information, this is what I get from it:
MQSeries DataDirect Technologies 5.3 32-BIT Oracle (32 bit)
Driver32=D:\ ...
We have a flow that regularly polls a stored procedure in a source database (Oracle), to see if there are records available that need to be processed. We use ESQL to fetch the data.