8 Replies Latest reply: Aug 30, 2010 3:33 AM by 618702 RSS

    ORA-30036: unable to extend segment by 8 in undo tablespace 'UNDO'

    Tophe
      Hello,

      I have an OWB Mapping (which translates into a MERGE query) that often fails with the above error. I wanted to have more information on UNDO. What uses most UNDO?

      Thanks.