Problems with editing table

[Bruce Armstrong]

I open up an existing table that doesn't have a primary key defined yet. I attempt to add a primary key, and when I hit apply PL/SQL developer attempts to create the table (and without a key). I just want it to do an alter to add the key.

 

[Worker]

I just did the following without any problems:

1) right-click the table from the Object Browser
2) pick "Edit"
3) click the "Keys" tab
4) in the blank row at the bottom, fill out name, type, and columns
5) click the "View SQL" button at the bottom

The SQL shown was a simple ALTER TABLE statement. Did you perhaps make any other changes to the table besides add the primary key?