first option to list the writeconcern properties potential values

mongo.xml

<row>
    <entry>hibernate.ogm.mongodb.writeconcern</entry>

    <entry>Defines the write concern setting used to control the
    acknowledgment of write operations. You can use: ERRORS_IGNORED,
    ACKNOWLEDGED, UNACKNOWLEDGED, FSYNCED, JOURNALED, REPLICA_ACKNOWLEDGED,
    NONE, NORMAL, SAFE, MAJORITY, FSYNC_SAFE, JOURNAL_SAFE, REPLICAS_SAFE.
    For more information, please refer to the
    <ulink href="http://api.mongodb.org/java/current/com/mongodb/WriteConcern.html">official documentation</ulink>
    This option is case insensitive and the default value is
    <literal>ACKNOWLEDGED</literal></entry>
</row>