搬家之后QQ互联(2003) notconnect

严格来说不算搬家，因为我原数据库的信息并没有导入到新站点，域名还是原来的域名，但是换了一个空间，云平台的站点信息也同步了
怎么会这样呢

(2003) notconnect
PHP Debug

No.	File	Line	Code
1	connect.php	26	discuz_application->init()
2	source/class/discuz/discuz_application.php	65	discuz_application->_init_db()
3	source/class/discuz/discuz_application.php	399	discuz_database::init(%s, Array)
4	source/class/discuz/discuz_database.php	23	db_driver_mysql->connect()
5	source/class/db/db_driver_mysql.php	75	db_driver_mysql->_dbconnect(%s, %s, %s, %s, %s, %s)
6	source/class/db/db_driver_mysql.php	88	db_driver_mysql->halt(%s, %d)
7	source/class/db/db_driver_mysql.php	224	break()