Mybatis中oracle如何批量insert语句

<insert id="batchInsertNoticeUser" useGeneratedKeys="false" keyProperty="id" >
    INSERT INTO TAB_NOTICE_USER(ID,PHONE,USER_ID,NOTICE_ID,NOTICE_TYPE,USER_NAME,EMPLOYEE_ID)
    select TAB_NOTICE_SEQUENCE.NEXTVAL, A.* FROM (
    <foreach collection="employeeList" item="item" index="index" separator="union all">
        select
        #{item.mobilePhone,jdbcType=VARCHAR},
        #{item.userId,jdbcType=VARCHAR},
        #{noticeId,jdbcType=BIGINT},
        #{noticeType,jdbcType=INTEGER},
        #{item.employeeName,jdbcType=VARCHAR},
        #{item.employeeId,jdbcType=VARCHAR}
        FROM DUAL
    </foreach>
    ) A
</insert>