Description of problem:
spacewalk-remove-channel failing on OracleXE DB backend with "SQLStatementPrepareError: ('ORA-00911: invalid character\n'..."


Version-Release number of selected component (if applicable):
spacewalk-backend-tools-2.1.49-1.el5


How reproducible:
always


Steps to Reproduce:
1. # spacewalk-remove-channel -v -u -c <some_custom_channel>


Actual results:
# spacewalk-remove-channel -v -u -c <some_custom_channel>
2014/02/12 05:23:09 -04:00 rhnSQL/driver_cx_Oracle.connect('Connecting to database', 'spaceuser@//localhost:1521/XE')

ERROR: unhandled exception occurred: (('ORA-00911: invalid character\n', 911, "select kt.base_path from rhnChannel c join rhnKickstartableTree kt on c.id = kt.channel_id where c.label in (:p_0) and not exists ( select 1 from rhnKickstartableTree ktx join rhnChannel cx on cx.id = ktx.channel_id where replace(ktx.base_path, :mnt_point, '') = replace(kt.base_path, :mnt_point, '') and cx.label not in (:p_0));")).
Traceback (most recent call last):
  File "/usr/bin/spacewalk-remove-channel", line 589, in ?
    sys.exit(main() or 0)
  File "/usr/bin/spacewalk-remove-channel", line 152, in main
    skip_kickstart_trees=options.skip_kickstart_trees)
  File "/usr/bin/spacewalk-remove-channel", line 305, in delete_channels
    _delete_ks_files(channelLabels)
  File "/usr/bin/spacewalk-remove-channel", line 569, in _delete_ks_files
    h.execute(**params)
  File "/usr/lib/python2.4/site-packages/spacewalk/server/rhnSQL/sql_base.py", line 153, in execute
    return apply(self._execute_wrapper, (self._execute, ) + p, kw)
  File "/usr/lib/python2.4/site-packages/spacewalk/server/rhnSQL/driver_cx_Oracle.py", line 109, in _execute_wrapper
    retval = apply(function, p, kw)
  File "/usr/lib/python2.4/site-packages/spacewalk/server/rhnSQL/sql_base.py", line 207, in _execute
    return self._execute_(args, kwargs)
  File "/usr/lib/python2.4/site-packages/spacewalk/server/rhnSQL/driver_cx_Oracle.py", line 162, in _execute_
    self._real_cursor.execute(*(None, ), **params)
SQLStatementPrepareError: ('ORA-00911: invalid character\n', 911, "select kt.base_path from rhnChannel c join rhnKickstartableTree kt on c.id = kt.channel_id where c.label in (:p_0) and not exists ( select 1 from rhnKickstartableTree ktx join rhnChannel cx on cx.id = ktx.channel_id where replace(ktx.base_path, :mnt_point, '') = replace(kt.base_path, :mnt_point, '') and cx.label not in (:p_0));")


Expected results:
Should delete the channel