无法连接数据库:Too many connections

>  /app/base/lib/db/connections.php:176
#0trigger_error(...string(42) "无法连接数据库:Too many connections" ,'256')connections.php:176
#1base_db_connections->_connect('localhost','tovi2',...string(23) "znHmkML8zZDozHStovi0114" ,'ecos')connections.php:165
#2base_db_connections->_rw_conn()connections.php:150
#3base_db_connections->_ro_conn()connections.php:90
#4base_db_connections->select(...string(67) "SELECT * FROM `sdb_aggregate_article_nodes` ORDER BY `ordernum` ASC" )mysql.php:41
#5dbeav_select_mysql->select()mysql.php:100
#6dbeav_select_mysql->fetch_all()node.php:165
#7aggregate_article_node->get_nodes()indexs.php:211
#8aggregate_mdl_article_indexs->class_filter(...array(2) { ["url_name"]=> string(7) "gallery" ["url_number"]=> string(8) "145.html" } )indexs.php:60
#9aggregate_mdl_article_indexs->getList('*',...array(2) { ["url_name"]=> string(7) "gallery" ["url_number"]=> string(8) "145.html" } ,'0','1')model.php:339
#10base_db_model->db_dump(...array(2) { ["url_name"]=> string(7) "gallery" ["url_number"]=> string(8) "145.html" } ,'*')model.php:405
#11dbeav_model->dump(...array(2) { ["url_name"]=> string(7) "gallery" ["url_number"]=> string(8) "145.html" } )detail.php:295
#12aggregate_article_detail->getByUrlnumber('gallery','145.html')router.php:756
#13site_router->parse_route_static_dispatch('gallery/145.html')router.php:680
#14site_router->parse_query('gallery/145.html')router.php:699
#15site_router->init_query_info('gallery/145.html')router.php:503
#16site_router->dispatch('gallery/145.html')kernel.php:184
#17kernel::boot()index.php:5