alter system set open_links=0 sid ='*' scope=spfile;
System altered.
alter system set open_links_per_instance=0 sid ='*' scope=spfile;
System altered.
重启数据库 SELECT id FROM tb@db_link where rownum<=10 * ERROR at line 1: ORA-02020: too many database links in use 原文链接：https://www.f2er.com/oracle/207715.html
