Description of problem:
check-oracle-space-usage.sh reports high usage on UNDO tablespace. Space in UNDO tablespace is recycled so it doesn't make a sense to report that.

Version-Release number of selected component (if applicable):
Satellite-5.3.0-RHEL4-re20090227.1
spacewalk-dobby-0.5.14-1.el4sat

How reproducible:
always

Steps to Reproduce:
1. check UNDO tbs usage: 
 # su - oracle -c 'db-control report'
2. consume free space in UNDO_TBS (db session 1):
 # sqlplus rhnsat/rhnsat@rhnsat
 SQL> create table undoconsumer as select s.* from user_source s,
        (SELECT rownum FROM dual CONNECT BY LEVEL <= 1000) t1000;
3. create db session 2 (connect from another terminal) and run query against undoconsumer:
 # sqlplus rhnsat/rhnsat@rhnsat
 SQL> select count(*) from undoconsumer;
4. from db session 1 run:
 SQL> update undoconsumer set line = line+1;
5. wait until db session 1 ends or fails with ORA-30036 (it takes about 15 mins)
6. check if UNDO_TBS is exhausted:
 # su - oracle -c 'db-control report'
7. run space report
 # /etc/cron.daily/check-oracle-space-usage.sh

Actual results:
Warning email:
This is a notice to let you know that you have gone over 90% usage in one of the
 Oracle Tablespaces. We recommend to be proactive and increase the size of the t
ablespace before getting to 100% usage. Please consult the Satellite documentati
on on using db-control to increase the size or contact Red Hat Support for assis
tance.

Tablespace                  Size    Used   Avail   Use%
DATA_TBS                    7.3G  708.4M    6.7G     9%
SYSAUX                      250M   71.7M  178.2M    29%
SYSTEM                      400M  242.9M    157M    61%
UNDO_TBS                    500M    500M      0M   100%
USERS                       128M     64K  127.9M     0%


Expected results:
no email

Additional info: