scl-utils should support enabling more than one collection at a time. Right now it takes and enables only the one listed as the first argument. This issue has already been fixed upstream: 3845e9d75ce2c851af18aa1556bf29dd025c1a2d d69f3481e375bd0e355ad30a6cbe4d86c6ca46c6
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux release for currently deployed products. This request is not yet committed for inclusion in a release.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHBA-2013-1303.html