Whenever we are trying to retrieve any data from another server we need two steps.
First step:
-- Server one scalar variable
DECLARE @SERVER VARCHAR(MAX)
--Oracle is the server to which we want to connect
EXEC SP_ADDLINKEDSERVER @SERVER='ORACLE'
Second step:
--DBO is the owner name to know table owner name execute (SP_HELP TABLENAME)
SELECT * INTO DESTINATION_TABLE_NAME
FROM ORACLE.SOURCE_DATABASENAME.DBO.SOURCE_TABLE