I have a synonym created over a database link and, when trying to retrieve the synonym's columns with the method getColumns(catalog, schemaPattern, tableNamePattern, columnNamePattern), the ResultSet is always empty.
I have tried using null as catalog, schemaPattern and columnNamePattern and setting the includeSynonyms property to true but had the same result.
I'm using oracle jdbc driver 11.2.0.1 and oracle 12c database.
Is this a driver limitation?