Connection string question

Application used to connect to 9i single instance DB using
jdbc:oracle:thin:@host:1521:dbname
Is there a way to connect to RAC without having to specify all the host names in the cluster like below? Want to be able to specify only one host name. The OS (linux) doesn't have a cluster name which could be used- at least not that I know of. It will require a lot of changes to ask user for multiple names if using RAC and hoping there is a simple way to connect without having to re-write the UI to get all the host names. I know if I use sqlplus directly, I can connect just by specifying the service name and not listing the host names. How does sqlplus get all the host names? By reading tnsnames.ora? We want to be able to get failover capabilities and hoping there is a way to specify a single host name (or cluster if there is such a name) in the connection string. Oracle client sw has been installed on the application server.
String below requires all the host names:
jdbc:oracle:thin:@(DESCRIPTION=
(LOAD_BALANCE=on)
(ADDRESS=(PROTOCOL=TCP)(HOST=db7-vip)(PORT=1521))
(ADDRESS=(PROTOCOL =TCP)(HOST=db6-vip)(PORT=1521))
(ADDRESS=(PROTOCOL=TCP)(HOST=db5-vip)(PORT=1521))
(CONNECT_DATA=(SERVICE_NAME=<service_name>)))
.

If you want to connect using failover characteristics, then the standard thin client should be replaced by the oci client, and instead of specifying the hostname:port:sid on the URL, you can use a tns entry. All connectivity, failover, and load balancing characteristics can be specified within the tns entry.
~ Madrid

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Hi,
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regards
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Hi,
my concrete problem is that our application only uses one user. eg. appuser . During the login process of the application the "real" user name, language and other attributes are set in a packag as global variables.
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PS: I have also posted this question on http://stackoverflow.com/questions/27979454/ef-code-first-from-database-with-managed-oracle-data-access-dynamic-connection because it is quite urgent and I'd like to use Code First from Database. Otherwise I'd have to go "back" to using Model from Database again, which is not ideal because we have updatable views where the .edmx-file has to be edited after every reload of the model, while with Code First from DB inserting into the view automatically works.

I am trying to use the relatively new Code First from Database with the newest EF (6.x) and on an Oracle database (11g, but I have installed the newest ODTwithODAC). First of all, it works fine as long as the connection string is inside the App.Config file. But when I try to build it dynamically in the C# code (or rather, statically at the moment) it fails. I have it working with a dynamically built connection string when doing Model from Database though, so I'm at a loss right now.
First, I have created a second constructor for the context class that takes a string and does base(connectionString). Then I build the connection string via
OracleConnectionStringBuilder oracleBuilder = new OracleConnectionStringBuilder();
oracleBuilder.DataSource = "TEST.BLA.COM";
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oracleBuilder.Password = "abc";
oracleBuilder.PersistSecurityInfo = true;
string connection = oracleBuilder.ToStrin();
Now trying to open an EntityConnection by giving to it this provider-specific connection string (or even the static one from the App.Config) doesn't work; I get "keyword not supported: user id"). Trying it by creating a context and giving this connection string doesn't work either. I'm pretty sure that this is because I didn't specify the provider to use; after all, it should use the Oracle.ManagedDataAccess.Client provider and not an SQL Server based one.
I then tried to get around this by using an EntityConnectionStringBuilder on top and specifying the provider keyword there, but then I get "keyword not supported: provider" when using it in the context constructor, and "the 'metadata' keyword is always required" when using it with the EntityConnection constructor.
As I said above: I bet it's the provider that I have to specify somehow, but I don't know how. The code that does work is the following:
using (var context = new Model())
context.Database.Connection.Open();
context.Database.Connection.Close();
When I read context.Database.Connection.ConnectionString, it is exactly the provider-specific connection string I created above, but I don't know where to specify the provider again. Do you know of any way to do this? Certainly there must be one.
PS: I have also posted this question on http://stackoverflow.com/questions/27979454/ef-code-first-from-database-with-managed-oracle-data-access-dynamic-connection because it is quite urgent and I'd like to use Code First from Database. Otherwise I'd have to go "back" to using Model from Database again, which is not ideal because we have updatable views where the .edmx-file has to be edited after every reload of the model, while with Code First from DB inserting into the view automatically works.

How get connection string of default database of CreateUserWizard control

hi,
i am creating website in which I add create user wizard control, I want to restrict user to use one email id only for one time,
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Security=SSPI;" />
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type="System.Web.Security.SqlMembershipProvider"
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enablePasswordReset="true"
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requiresUniqueEmail="true"
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I want connection string of it's
mandar26

Hello Mandar26,
The question should be asked on http://forums.asp.net/ Please reopen a new case there for help.
Regards,
Barry
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How to determine the connection string to a SQLite database, in C# code

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string connectionString = null;
SqlConnection connection;
SqlCommand command;
SqlDataAdapter adapter = new SqlDataAdapter();
DataSet ds1 = new DataSet();
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connection = new SqlConnection(connectionString);
try
connection.Open();
command = new SqlCommand(sql, connection);
catch
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I installed, and got from
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<?xml version="1.0" encoding="utf-8"?>
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<configSections>
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<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.1"/>
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What does SQLite connection strings has to do with WPF?
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https://www.connectionstrings.com/sqlite/
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connection = new System.Data.SQLite.SQLiteConnection(connectionString);
try
connection.Open();
command = new System.Data.SQLite.SQLiteCommand(sql, connection);
catch
Please refer to the following article for more information and an example of how to connect and read and write data from an SQLite database using C#:
http://blog.tigrangasparian.com/2012/02/09/getting-started-with-sqlite-in-c-part-one/.
There is contains a link where you can download the required assemblies.
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Please remember to mark helpful posts as answer to close your threads and then start a new thread in an approproate forum if you have a new question.

How to change connection string for a form created with b1de

Hi all
i've created a form using the Code Generator tool ob B1DE
My question is how can i set the connection string to a different server and database. doing so after the creation wizard has finished?

Hi,
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The only connection string I now about is the one used to connect to the UI API... and this one is fixed for all apps in debug mode and given as parameter when your addon is registered in B1.
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Regards
Trinidad.

Report Designer odbc connection string for data source using a parameter

I am using stand alone report designer 3 for the present and have a question/problem regarding the odbc connection string for MySQL when setting up the data-source
I need to be able to enter a parameter which is the database name i.e. BOE-201401 or say BOE-201312 etc from a list of databases the user can choose from.
at present the odbc connection string points to BOE-201402
the connection string is at present Dsn=Development Server for MYsql;description=MYSQL;server=ldndw01;database=BOE-201402;port=3306
my parameter has the name BOE_DATABASE
and in an expression it is as such
=Parameters!BOE_DATABASE.Value
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Hi Leslie,
Based on your description, we want to design a report with a dynamic DataSource connection string. There are the basic steps below for your reference:
Create report with static database.
Change data source to report parameter.
Send new database connection string as a report parameter.
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http://haseebmukhtar.wordpress.com/2011/11/09/dynamic-database-in-ssrs-2008/
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Alisa Tang
Alisa Tang
TechNet Community Support

Change local connection string on remote server

Hello,
I have searched every post and tried every connection string there but can't figure out how to connect to my database on my remote server. I am using Visual Developer 2005 Express Edition in C# and uploading it to a Windows server running asp.net 2.0. The domain has not resolved yet.
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When I uploaded to my server I changed \SQLEXPRESS to (local) as advised in the forum.
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Is this still an issue?
Thanks!
Ed Price, Power BI & SQL Server Customer Program Manager (Blog,
Small Basic,
Wiki Ninjas,
Wiki)
Answer an interesting question?
Create a wiki article about it!

Connection String with Crystal Report XI R2

Hello,
I am having an issue with Crystal Reports XI R2 and figured this would be a good place to start and post my question.
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Hi Shawn,
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For CR Designer itself the only option is to turn on Trusted Authentication in your Server, used Mixed mode and then import all of your users into SQL Server. Refer to MS's Help file on how to.
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Connection string size limits

Hi,
old client has size limit on connection string size?
if i create a tnsnames with 3 vip old client generate an error.
Is there any workaround?

842366 wrote:
Hi,
old client has size limit on connection string size?
if i create a tnsnames with 3 vip old client generate an error.
Is there any workaround?upgrade client
use EZCONNECT; which does not require any tnsnames.ora
How do I ask a question on the forums?
SQL and PL/SQL FAQ

Security and connection string

Hi,
   I am a new developer using ColdFusion.
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iccsi,

That is a broad question. Are you referring to connections to data sources, or recognizing user IDs for site logins? If the former, you can configure the database logins (with some caveats) within the secure CF Administrator, and never have to pass credentials directly in your CFML code. As for user IDs for logins, if you configure your webserver (IIS) to use Windows Authentication via NTLM, Coldfusion will receive the Windows login and make it acccessible to you via CGI variables.
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SSRS 2012 - Windows Server 2012 R2 issue with OLEDB Connection String

Hoping someone can help. As stated above, we are running SQL Server 2012 with SP1 on Windows Server 2012 R2. When I create a Data Source as follows in Reporting Services, I receive the following error message. Any thoughts on why this fails? The same data
source works on Windows Server 2008 R2 Enterprise SQL Server 2008 R2.
Data Source type: OLE DB
Connection string: Provider=Microsoft.ACE.OLEDB.12.0;Data Source="\\networknamehere\CSVFiles";Mode=Read;Extended Properties="text;HDR=YES;FMT=CSVDelimited"
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Unspecified error
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at System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup)
at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)
at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
at System.Data.OleDb.OleDbConnection.Open()
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--- End of inner exception stack trace ---;

Hi ABAA101,
According to your description, when you use csv file as data source in SSRS 2012 report, you got the error message.
I tested the issue in my local machine, due to some policy restrictions, I could not install Access in my local machine. To workaround the issue, we can use the connection string like below:
Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\report;
Extended Properties="text;HDR=Yes;FMT=Delimited"
The csv file is stored in report folder in C driver.
In Query text box in the dataset, we can use the query like below:
Select * from new.csv
If you have any more questions, please feel free to ask.
Thanks,
Wendy Fu
Wendy Fu
TechNet Community Support

How to create dynamic Connection String in SSIS Package???

Hi
I created OLEDB Source Connnection String for that Package,
i need Create OLEDB Destination Connection String Dynamically,
Same server name,but i need to add DW at the end of the Database
ex:
Source database name is Demo,
Destination database should come DemoDW.
i need to create Dynamic Destination Connection String..
any possible to Create
Thanks in advance
Pandiyan
pandiyan

Hi Pandiyanpvp,
According to your description, the OLEDB Destination Connection String should be dynamically based on the OLEDB Source Connection String. They are all the same, except adding “DW” at the end of the Database of OLEDB Source Connection String in OLEDB Destination
Connection.
To achieve this requirement, we can create a variable with the Database name of OLEDB Source Connection String, then use expression to control the OLEDB Source and OLEDB Destination Connection Strings. For more details, please refer to the following steps:
Create a variable named Source with the Database name of OLEDB Source Connection String as value.
Click the OLEDB Source Connection Manager to navigate to the Properties window.
Click “…” next to Expressions to add a ConnectionString Property with the expression like below:
"Data Source=.;Initial Catalog="+@[User::Source] + ";Provider=SQLNCLI11.1;Integrated Security=SSPI;Auto Translate=False;"
Click the OLEDB Destination Connection Manager to navigate to the Properties window.
Click “…” next to Expressions to add a ConnectionString Property with the expression like below:
"Data Source=.;Initial Catalog="+ @[User::Source] + "DB"+";Provider=SQLNCLI11.1;Integrated Security=SSPI;Auto Translate=False;"
If there are any other questions, please feel free to ask.
Thanks,
Katherine Xiong
Katherine Xiong
TechNet Community Support

C How to Set Isolation Level in the Connection String

How to Set Isolation Level in the Connection String using the "Microsoft OLE DB Provider for DB2 Version 4.0"?
We are trying to move from Crystal Reporting that run against a IBM DB2 database on a mainfram to SSRS reporting and we have downloaded the "Microsoft OLE DB Provider for DB2 Version 4.0" and then worked with the DB2 Administrator to create the
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Hi Dannyboy1263,
According to your description, you want to set the Transaction Isolation Level in Connection String. Right?
In Reporting Services, the Connection String for OLE DB Connection can only contains Provider, Data Source and Initial Catalog. There's no property for setting Transaction Isolation Level in the Connection String. Based on my knowledge, we can
only set the Transaction Isolation Level at Query level or set it by using code (C#, VB, Java...) to call the property of Connection. So unfortunately your requirement can't be achieved currently.
Reference:
OLE DB Connection Type (SSRS)
Data Connections, Data Sources, and Connection Strings in Reporting Services
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Best Regards,
Simon Hou

How to create dynamic connection string with variables using ssis.

Hello,
Can anyone let me know on how to create dynamic connection string with variables using ssis?
Any help would be appreciated.

Hi vinay9738,
According to your description, you want to connect multiple database from multiple servers using dynamic connection.
If in this case, we can create a Table in our local database (whatever DB we want) and load all the connection strings. We can use Execute SQL Task to query all the connection strings and store the result-set in a variable of object type in SSIS package.
Then use ForEach Loop container to shred the content of the object variable and iterate through each of the connection strings. And then Place an Execute SQL task inside ForEach Loop container with the SQL statements we have to run in all the DB instances.
For more details, please refer to the following blog:
http://sql-developers.blogspot.kr/2010/07/dynamic-database-connection-using-ssis.html
If there are any other questions, please feel free to let me know.
Regards,
Katherine Xiong
Katherine Xiong
TechNet Community Support

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