Hi 63877242 ,
Welcome to Microsoft Q&A platform and thanks for posting your query. As I understand your question, you want to know how to create a dataset for oracle DBLink. Please let me know if that is not the case.
Dataset is a reference to the datastore created on top of the linked service which holds the connection string for the datastore. So, dataset can be created for a particular datastore.
For instance, Oracle is a relational database management system (RDBMS) that stores and manages data in a structured format. On the other hand, Oracle Database Link (DBLink) is a feature that enables a database to access data in another database , it is like a connection between two databases.
So, we can't create a dataset for Oracle DB link, but we can create it for Oracle database.
For more details , kindly visit : Copy data from and to Oracle by using Azure Data Factory or Azure Synapse Analytics
Hope it helps. Kindly accept the answer if it helps.