Changing database engine from Postgres to MS SQL Server find this problem at server side
Cannot create new connection because in manual or distributed transaction mode
Solution according to UniDAC is change connection parameters as pointed here
SQLConnection1.VendorLib := ‘sqlncli.dll’;
SQLConnection1.Params.Values[‘Custom String’] := ‘MultipleActiveResultSets=True’;
TD.TransactionID := 1;
TD.IsolationLevel := xilREADCOMMITTED;
How to setup the string connection to accomplish that?