Connecting to SQLSERVER DB (on windows 2008 server) from Oracle 12C DB(on Linux 6.7)

Using DG4ODBC now. facing some errors with some select statements. Is there an alternate way to access SQLSVR data from Oracle

error: ORA - 28500

ODBC SQLSVR driver: the multipart identifier could not be bound. (42000,NativeErr=4104)  (42000, Native Err=8180)