(Oracle 9i, Solaris)

When I run: CREATE PUBLIC DATABASE LINK "testdb" using 'testdb';

And then run select * from dba_db_links

OWNER Link_name
PUBLIC TESTDB.COM

Why does it put the .com on the end??

GLOBAL_NAMES=FALSE
DB_DOMAIN=WORLD
The link works!
I had to put TESTDB.COM in my server TNS!

What else could cause this?