Oracle ORA-02082 creating database link

Creating a database link in oracle gives the error -
create database link orcl connect to myuser identified by oracle using 'orcl';


SQL Error: ORA-02082: a loopback database link must have a connection qualifier
02082. 00000 -  "a loopback database link must have a connection qualifier"
*Cause:    attempt to create a database link with the same name as the
           current database.
*Action:   a loopback database link needs a trailing qualifier, e.g.
           MYDB.DEV.US.ORACLE.COM@INST1  - the '@INST1' is the qualifier

To fix use
create database link orcl@loopback connect to myuser identified by oracle using 'orcl';