Scheduled job that drops temp tables.

Question

Hi, I have a 3rd party app that creats temp tables and never drops them. I need to come up with a scrip that I can run every thirty days and clean them up. Here is the select I run to find them. I just don't know how to format the drop statement.
select owner, object_name, created from dba_objects where object_name like 'DWTEMP%' and created > '01-MAY-11' and object_type='TABLE';
Thanks
Bryan

Answer 1

It sounds like you want something like
BEGIN
  FOR tbl IN (select owner, object_name, created
                from dba_objects
               where object_name like 'DWTEMP%'
                 and created BETWEEN trunc(sysdate) - 30 AND trunc(sysdate)
                 and object_type='TABLE')
  LOOP
    EXECUTE IMMEDIATE 'DROP TABLE ' || tbl.owner || '.' || tbl.object_name || ' PURGE';
  END LOOP;
END;or
BEGIN
  FOR tbl IN (select owner, object_name, created
                from dba_objects
               where object_name like 'DWTEMP%'
                 and created BETWEEN add_months(trunc(sysdate), -1) AND trunc(sysdate)
                 and object_type='TABLE')
  LOOP
    EXECUTE IMMEDIATE 'DROP TABLE ' || tbl.owner || '.' || tbl.object_name || ' PURGE';
  END LOOP;
END;depending on whether you want to go back 30 days or 1 month.
Justin