alter system set open_links=0 sid ='*' scope=spfile;
System altered.
alter system set open_links_per_instance=0 sid ='*' scope=spfile;
System altered.
Restart the database
alter system set open_links=0 sid ='*' scope=spfile;
System altered.
alter system set open_links_per_instance=0 sid ='*' scope=spfile;
System altered.
Restart the database