nopcommerce 3.90中没有数据库实例

Question

我在nocommerce 3.90中运行项目时遇到错误，有时它运行良好，但有时它显示"无数据库实例"的错误。我很惊讶它显示了这种类型的错误。因为我已经做了正常的事情来运行nocommerce项目。

我做过这些事情：

• 通过安装nocommerce设置设置文件。

• 删除nopcommerce的bin文件夹。

• 清洁溶液并重新构建。

但仍然面临同样的问题。

Answer 1

"无数据库实例"当Nopcommerce无法连接数据库时，会发生这种错误。若您已经在本地创建了数据库，那个么请尝试查找SQL服务并重新启动该服务。但若您的数据库托管在任何其他服务器上，那个么请检查您的网络连接。

Answer 2

There are some of summery solution that i have mention as below
=> Since i had moved a live cart to a test server, the settings in the database for that cart had force ssl and also force www before any url. Also under Store settings i still had the domain info for that site which was now difrent in the test server. Once i noticed this and updated the database it all started working.
=> 
You try change settings.txt file:
DataConnectionString: Data Source=localhost/IP;Initial Catalog=DBName;Integrated Security=False;Persist Security Info=False;User ID=DBUser;Password=DBPass;MultipleActiveResultSets=True
=> 
In my case I need config application pool for nopcomerce
my connection string 
DataProvider: sqlserver
DataConnectionString: Data Source=.;Initial Catalog=nopcommerce370;Integrated Security=True;Persist Security Info=False
I need set Application Pool Identity to user has access right to db
Check the image to details.
=>  Check also db permission.
=> try with
Data Source=9X.2XX.7X.XX"yoursqlservenameinstance"
or
Data Source="yournamemachine"
or
Data Source="yournamemachine""yoursqlservenameinstance"

Answer 3

你可以做一些类似的事情

• 检查App_data上的设置文件是否存在

• 检查连接字符串是否正确

• 检查您的SQL服务器是否正常工作或尝试连接以停止

• 清除缓存您的浏览器

Answer 4

试试这个``

Right click on the downloaded file (nopCommerce_3.40_Source.rar) ->select  properties -> press "Unblock".

和

and change connection string in Settings.txt file.