DOCSP-48055-mongodump-oplog-sharding-limit (#189)

Author: ajhuh-mdb

source/mongodump.txt

@@ -719,8 +719,7 @@ Options
    the backup.
 
    To back up individual replica sets while still accepting writes, use
-   ``--oplog``. To back up sharded clusters with ``mongodump``, see
-   :ref:`backup-sharded-dumps`.
+   ``--oplog``.
 
    .. important::
 
@@ -739,6 +738,9 @@ Options
    :term:`oplog`. This includes all members of a replica set.
 
    ``--oplog`` does not dump the oplog collection.
+
+   You can't run ``mongodump`` with ``--oplog`` on a sharded cluster. To back up 
+   sharded clusters with ``mongodump``, see :ref:`backup-sharded-dumps`.
 
    .. note::