You need to isolate the problem.
-Is the happening when executing code from standard transformations (Table Loader/SCD Type 2 Loader)?
-Can you update this table from other ODBC clients?
-Can you update the table "inside" Ingres using the same userid/schema as used in the ODBC connection?
Need to connect to databases in SAS Viya? SAS’ David Ghan shows you two methods – via SAS/ACCESS LIBNAME and SAS Data Connector SASLIBS – in this video.