discuzX3升级，数据库出错？

升级X3时，文件升级完了。。它说要进入数据库升级，，一点继续就出现以下问题；

Discuz! Database Error
(1) Can't create/write to file 'C:DOCUME~1mysqlrunLOCALS~1Temp#sql_107c_0.MYD' (Errcode: 17)SHOW COLUMNS FROM forum_activityapply LIKE 'contact'

PHP Debug

No.	File	Line	Code
1	install/update.php	148	discuz_database::fetch_first(%s)
2	source/class/discuz/discuz_database.php	91	discuz_database::query(%s, Array, false, false)
3	source/class/discuz/discuz_database.php	136	db_driver_mysql->query(%s, false, false)
4	source/class/db/db_driver_mysql.php	151	db_driver_mysql->halt(%s, %d, %s)
5	source/class/db/db_driver_mysql.php	218	break()