How to correctly make a public synonym

Question

This is a pretty silly one, but I need help.

I have a table owned by mydbowner. It is named mydbowner.mytable. I tried to make a public synonym by issuing the command:

Answer 1

The error you're getting implies that mydbowner.mytable is not, in fact a table. What does

SELECT object_type
  FROM all_objects
 WHERE owner = 'MYDBOWNER'
   AND object_name = 'MYTABLE'

return?