歌手问题了。。。

采集的歌手。从后台点击歌手每个都能打开。但是在前台点击分类。如日韩男歌手列表时就会出现数据库出错。英语差数据库也不懂。求告诉出错原因。。
Error Number: 2006

MySQL server has gone away

select id,name from `v4_singer` where 1=1 and cid in (10) and (((ord( substring(name, 1, 1 ) ) -65536>=-16474 and ord( substring( name, 1, 1 ) ) -65536<=-16213)) or UPPER(substring( name, 1, 1 ))='K') and yid=0 and hid=0 order by hits desc

Filename: cscmssystemdatabaseDB_driver.php

Line Number: 330

Error Number: 2006

MySQL server has gone away

SELECT * FROM (`v4_session`) WHERE `sessionid` = '44589cf25ba1843627832df6980df3da'

Filename: cscmssystemdatabaseDB_driver.php

Line Number: 330


Error Number: 2006

MySQL server has gone away

delete from v4_session where addtime<1432222417

Filename: cscmssystemdatabaseDB_driver.php

Line Number: 330