Oracle DbLink查询性能优化
DbLink查询性能优化: DRIVING_SITE
SELECT /*+ DRIVING_SITE(departments) */ FROM employees, departments@rsite WHERE employees.department_id = departments.department_id;
Reference:
https://docs.oracle.com/cd/B13789_01/server.101/b10752/hintsref.htm#30401
https://www.cnblogs.com/sopost/archive/2010/10/11/2190076.html