How can I delete a corrupted table space?
If you just want to remove the tablespace have you tried logging in as sys and dropping it?

DROP TABLESPACE &lt;tablespace&gt;
INCLUDING CONTENTS 
CASCADE CONSTRAINTS; 


If so, what error message do you receive? (I'm assuming you've made a cold backup of the database at this point in case the tablespace is needed.)

Alternatively, if you can determine which datafile is corrupt you can remove this from the tablespace:

ALTER DATABASE DATAFILE '&lt;filename&gt;' OFFLINE DROP; 


Make sure that &lt;filename&gt; is the filename known to Oracle, especially if any links may be involved on disk! Otherwise you will get misleading errors about non-existent files.