We use this connection string today:
Provider=SQLOLEDB; Data Source=mydomain.com; Initial Catalog=myDB;User
Id=xxx; Password=xxx;
And I like to know who is save the mydomain.com in is cache, the browser of the user or the server that run the application?
Thanks
If this is ASP.NET code, then the database connection happens on the server. The user's browser has no knowledge of your database.
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I have created an Amazon RDS DB instance. I can connect to it and perform operations with SSMS. I can also bind to it using Entity Framework DB-first and generate my model. However, when I run my app, using the same connection string that was generated in the data access project, I get a "the network path was not found" error while trying to establish a connection to the DB.
Let me be clear: the db exists, the right ports are open, and the connection string is correct. I am the only one connecting to the database and the status is "available".
So what's going on? Has anyone experienced something like this?
Let me also further mention that I have already checked the usual things like internet connectivity, firewall rules, state of the database, etc.
well it started working all of a sudden. So I guess this problem will only pop up again in production or something.
I have a ASP.NET Web application. The application connects three different databases. So I have defined three connection string in web.config with different database name and credentials.From the application code I am pointing to the relevant connection string and firing stored procedures. Sometimes the procedures are hitting the wrong database. My guess is that as .NET cache the web.config, somehow the framework is returning the wrong connection string from cache and the application hitting the wrong database. I have checked the application code and found it is pointing to the correct connection database in all cases. Is this happening due to web.config chancing? I cannot identify the root cause of the problem. Please help.
If you are using EF to connect to the database, you have to close the scope of the context and then initialize a new context with the required connection string and then use that context to execute the SP.
I don't think this is an issue with the caching !
If there is only one DAL which connecting to different databases then it is a high chance of application mistake somewhere.
Possible solution, as we have no idea of how is you data access code looks like, is to create 3 different DAL and in each of them realize logic to work only with specified connection string.
For example create 3 different classes inherited from DbContext with different connection strings in constructors.
Hi I am working on ASP.NET MVC project. Currently I am using Model first approach, where i used to add database manually by using ADO.NET model. Currently I have 4 database and I have 4 connection strings in web.config file.
It was fine till now, since I was working on development environment. But now I need to move my code to live and problem is, in live we have like 40 to 50 databases.
So what I should do is, generate connection string dynamically when user wants to connect to particular database.
I have stored procedure for this which returns connection string and database name.
For example if I have 4 database name like db1, db2, db3 and db4, I need to compare this database name with my stored procedure results database name and if both are equal, then generate connection string equal to that database name.
And also I need to put this in session once i generate connection string, so no need to generate connection string again for particular session.
Can someone help me in this??
EF DbContext as a constructor parameter takes a name of a connection string or connection string itself. So there is no problem in generating any kind of connection string and supply this when creating DdContext.
In our application we have many tenants and have a database per tenant. For every request we lookup what tenant it is and from Settings DB provide a connection string to tenant's own database.
I've not worked with Ado.Net, but from what I see in Google, this is very similar (or based on) to Entity Framework. So down to your particular implementation, there must be a way to provide connection string to database context outwith web.config.
There is a delphi application in which I am trying to connect to Oracle database Using provider MSDAORA.1 but problem is coming in connecting. Oracle error message which is coming is "Oracle error occurred, but error message could not be retrieved from Oracle"
I am able to connect to database with Oracle10g client.
Connection String: Provider=MSDAORA.1;
User ID=murat;
Password = murat;
Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp) (HOST= INGPSP)(PORT=1521))(CONNECT_DATA=(SID=INGPSP)));
Persist Security Info=False;
Please provide your expert opinion what can be the reason of this?
The service name seems to be lacking in your address.
Set a tnsnames.ora file, and use the entry as data source instead of the data_source parameter you set. Follow the steps available on the faq.
Or use use connection strings like '//host[:port]/[service_name]' for your data source: //INGPSP:1521/ServiceName
For Oracle, both Microsoft and Oracle OleDB providers are known to have issue with BLOBs. If you can, use another mean of connection.
What I see that is strange is that your HOST and SID are the same. The HOST is the name of the machine on your network and the SID is the database instance on that machine. I created the following ConnectionString for the PRD3 database on machine DB19 (there are multiple databases on DB19) on our network. I was able to connect to the database successfully with real User ID and Password.
Provider=MSDAORA.1;
Password=123456;
User ID=abc;
Data Source="(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=db19)(PORT=1521))(CONNECT_DATA=(SID=prd3)))";
Persist Security Info=True
Normally the Data Source I use is the database name as defined in TNSNAMES.ORA. It is a lot less to type (fewer potential errors) and can be changed to another database without recompiling the program (such as switching between a development database and production database).
I'm building a rails app that communicates with other servers via ftp. The user needs to input their host, username and password for their particular ftp server. I wouldn't want to store their password as cleartext, but I need the actual password to connect to the server when it comes time. Would it make sense to use a two-way hash?
I found a few implementations that might do the job:
http://crypt.rubyforge.org/blowfish.html
http://crypt.rubyforge.org/rijndael.html
http://ezcrypto.rubyforge.org/
Thanks,
Trevor
Since password is eventually passed to the FTP server as cleartext, any db encryption is a bonus.
I ended up using attr_encrypted which worked great.