title: Alter Type in Oracle Fails with ORA-22324 and ORA-21700
body: <p>I'm trying to add an attribute to an already existing Object Type in an Oracle 10.2.0.4 DB.
  The schema is valid, and everything is working before running the following statement:</p>
  
  <pre><code>ALTER TYPE sometype ADD ATTRIBUTE (somefield varchar(14))
  CASCADE INCLUDING TABLE DATA
  /
  SHOW ERRORS
  </code></pre>
  
  <p>The alter fails with an ORA-22324 and an ORA-21700.
  Afterwards most of the schema objects which depend on sometype are invalid.
  Compiling them all, restores the schema to a working state.</p>
  
  <p>Anyone seen that kind of error?</p>