alter system set open_links=0 sid ='*' scope=spfile;
System altered.
alter system set open_links_per_instance=0 sid ='*' scope=spfile;
System altered.
Reiniciar la base de datos
alter system set open_links=0 sid ='*' scope=spfile;
System altered.
alter system set open_links_per_instance=0 sid ='*' scope=spfile;
System altered.
Reiniciar la base de datos