I'm starting using a project for smart device in windows CE 5. I'm using visual basic of v. studio 2008.I need to create a dynamic connection between a PDA (codebar lector) and an server with ORACLE 9i. The PDA connected via WIFI. But in my vb project I don't find OLEDB or ODBC elements.
View 2 RepliesI am creating a windows application which required Dynamic Connection String in the app starting (user need to provide db credentials through a form), After entering the connection credentials user redirected to new win form Everything is working fine but how can I pass my dynamic connection to another form.I tried to save it to App variable but I couldn't (I think its read only) Also I tried save it to registry but can't retrieve values.Is there any other option available ? like writing & retrieving ConString to a text file or XML.
View 1 Replies1.How to show Grid vertical and horizontal grid lines in windows application.2.How to stretch complete graph control placed on the form as per the resizing of the form.3.How to draw arc(curve shape) with start and end point with known radius and angle.
View 4 RepliesI have put my tns connection into the .ora file and am now able to conenct to it using SQL plus and can ping it :tnsping myConn.I've also added the connection to the ODBC Manager and connecting successfully when tetsing conneciton through the ODBC tool.now i'm having an issue making a connection to it using vb.net..[code]
View 3 Repliestrying to write a dynamic sql query that fetches data from oracle 10g database. My Where criteria is giving me real problems but i guess it has to do with the oracle data format. The data column is a TIMESTAMP data type storing values like 25-JAN-09 07.06.01.000000000 AM. Am trying to get rows having the columns matching a specific date( ignoring the time values), my where looks like this
WHERE to_date(COMPLY_RUN_DASHBOARD_DATE,'DD-MON-RR')='" & Now.Date & "'"i get the following error :CheckError ORA-01830: date format picture ends before converting entire input string
I have an application that I made in VB.NET. I put it in the server on my office and every other user access it via network connection. I only mapped the drive onto their computer and then I cope the shortcut to the application. can I close all the application that is running with a single code? I sometime need to close all the application first before I can do anything with the application (for example, modifying the report etc.). My current method is still the manual one, which is calling everyone to close their application or running all over the place closing the application myself.
View 1 RepliesI am seeing a strange intermittent connection failure. My application works just fine and then starts throwing connection failure exceptions. A reset of IIS is required before the app will start working again.I've been able to trace a few of the failures back to an unexpected restart of the oracle cluster but not all of them. Has anyone else seen this problem? I've searched the web but haven't found anything.
Client - Win2003 server, IIS running ASP.net 2.0.50727, code is VB.NET, ODBC connection via Oracle Client 10.2.0.1.0 Server - Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production on a Linux cluster.
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i am trying to connect to it via VB.net 2010. I have been trying the following:
Dim myConnection As OleDbConnection
Dim myCommand As OleDbCommand
Dim dr As OleDbDataReader
[Code]....
And i get the error on the Catch ee As Exception line: ORA-12560: TNS:protocol adapter error
I also have a tnsnames.ora file on my computer but i am unsure if i need to use that when connecting (or really, how too in the first place)? Is it needed for the code above?
I am trying to use a DNS-Less connection to the DB. Not sure if that is what it is doing in this or not?
Anyone know where I might be able to find code examples for connecting to an existing Oracle DB? I need to connect to my company's oracle db so I can write strings to it, verify strings, and read from it. I've found bits and pieces of code here and there, but nothing for all of it. I am a novice programmer and I am trying to add a db connection to an existing project for our plant to access the data. Our IT dept. is helping me with the db end.
View 2 RepliesI have a vb.net program that is failing, but giving no errors. I've just discovered that the code I am using is deprecated. But what is the replacment? (That seems like something useful for MSDN to list, but I'm sure not seeing it.)
Private Sub SetConnectionToDB(ByRef oCMD As OracleCommand)
Dim connectionString As String
connectionString = My.Settings.ImportDataConnectionString
[code]....
I'm using vs2010 and can't get this to work. The same code has worked in earlier versions. What has changed?
config file:
<appSettings>
<add key="ConnectionString" value="Data Source=MikeLaptop;Initial Catalog=AdventureWorksDW2008R2;Integrated Security=True"/>
</appSettings>
Code:
Dim strProvider As String = ConfigurationManager.AppSettings("ConnectionString")
strProvider is always = nothing
How to do this now?
In my program I got multiple spots where I open a Connection to an Oracle database, read some lines via a stored procedure which returns me a cursor, put them in an IDataReader, close the connection and go on.
Now everything works fine till the point of closing the connection. I've watched the connections opened to the database via TOAD for Oracle and I figured out, that the database seems to keep an connection opened after I said m_Connection.Close and m_Connection.Dispose.
I use Oracle.DataAccess and get an error after a short time, that there are to many connections. I debuged my session and made sure, that vb performs the close() command and it does it, but the database not.
I've been viewing the tutorial at [URL]...08-088541.html but I'm still having issues creating my connection to our Oracle database. Here's my code, which uses the same connection string as one of my VB6 programs (no password required for database--Oracle picks up windows name) :
Private Sub frmMain_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Create connection object
Dim OraDB As String = "Data Source=databaseneme;Persist Security Info=False"
Dim conn As New OracleConnection(OraDB)
conn.ConnectionString = OraDB
conn.Open()
Me.Show()
End Sub
I've been using .NET for all of 10 mins so the error may be painfully obvious!
I'm trying to develop a simple app with vb.net in VS 2010 that could monitor the ODBC connections via DSN made on the macnhine running this app.My scenario is an application (non Vb) running on a workstation that connects to an MS Access database on a network share.
The application (non Vb) connects using a link (ODBC connection via Oracle 10G) to the tables on the Oracle side.My VB.net Application should monitor the machine running the main application for ODBC connections drops and alert me via email for example.My question is where in the framework can I find something to instantiate or reference in order to check ODBC connections states constantly as well as network disconnection issues as well so I can log and /or alert when possible for network problems and ODBC connection problems for all the applications that might run on the host (machine running my vb app).
I'm connecting succesfully to an Oracle 10g DB with an the Microsoft ODBC for Oracle driver.Regular queries without parameters work fine, but parameterized queries act as if the parameters aren't getting passed in.ex.
--this works fine
Select * from tbl1 where column1 = 'test'
--this doesn't
select * from tbl1 where column1 = ?
--odbc string parameter 'test'
Here's what my connection string looks like:
"Driver={Microsoft ODBC for Oracle}; " & _
"CONNECTSTRING=(DESCRIPTION=" & _
"(ADDRESS=(PROTOCOL=TCP)" & _
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I am trying to open an Oracle database connection in vb.net 2008 in order to issue a Select statement and the populate a listbox with it.
My code is as follows:
Dim orclstr As String = _
"Provider=OraOLEDB.Oracle;" & _
"Data Source=10.0.0.77;" & _
"User ID=myuser;" & _
[code]....
Obviously, I am doing something wrong, but I can't figure out what.
I am developing a program to manage inventory and accounts. different clients need different databases like oracle/sqlserver/mysql etc. i want to make my solution work with all these database servers by only changing one string value . i want to declare like :
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I have the below mentioned code in a seperate class file for establishing connection and carry out DB transactions. I have an issue where multiple connections being opened which sometime exceed the connection pool. When I stepped through the code I found that there are codes which call ConnectDB() in a loop without calling DisconnectDB(). But I expected that the condition OraConn.State = ConnectionState.Closed should handle the situation. Somehow the condition is always satisfied hence openning another set of connection. Can you suggest where am I going wrong and also what best practice can be adopted here?
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The connection is again opened in function updData(). While I understand that it has to be closed correctly but keeping tab on every developer is not possible. Hence I want to control it directly from the connection class by using the same connection but the condition If OraConn.State = ConnectionState.
UPDATE I have put the code in UpdateDB under a Using block and removed call to ConnectDB and DisconnectDB from function like InsertData(...). It seems that the issue has been resolved. But I would like to know in case of exception will the connection remain open? and also OraConn is a public variable defined outside Using block so will it be disposed of by the GC?
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How to make Dynamic Connection string for VB.Net 2008 & Sql Server 2005 database
View 1 RepliesI am need to drag drop listboxes with connection line in vb.net. If the listbox move then connection line should also move. I have attached picture as wel
View 1 Replieswant to know how to connect database from window2008 server platform to ibm aix database is oracle 10g ..please anyone can help me here
View 2 RepliesI have a problem related, not only to VB.net, but also Oracle.I have a simple application that runs queries from an Oracle db (Oracle 9i) and creates reports from it. I am using the official oracle.dataAccess component.I need a very simple report that returns a list of usernames. Something like "SELECT userName FROM users".(userName field is a VARCHAR2).Problem with this query:The top 50 rows are OK.All the remaining are strange characters.
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I want to create Table in Oracle database from my asp.net application by using ado.net
View 1 RepliesI'm working on a vb.net application that executes an Oracle stored procedure. The stored procedure displays a value using dbms_output.put_line. How do I retrieve that value from the oracle database into my vb.net code?
View 1 Repliesi can connect to only one Data Base with dataset in Visual Basic . but i want Have Dynamic connection to data base i mean in want to my appliction users have ablity to connect to any data base they want (For Example : Choose file from menu and then open and then Select any Data base.)
View 4 Replies[i][b]I have always developed apps for desktops with an access database on one server for one company or sql server. I had one connection string. Now I am in a situation with multiple clients using my software on their own server. This means different connection strings can anyone suggest an efficient way to do this without changing connection strings for each server throughout the application?[/b][/i]
View 1 RepliesI have a vb.net application that will not connect to an oracle database on the PC that I publish the app too. It works fine under my pc both in design and when I publish it to myself. But it will not connect under the pc I publish it too. I do have oracle installed on the pc and have the connection setup exactly as I have on my own pc. I am sure it is a file path issue, or at least I believe it to be that.
View 5 Replieshow to convert an existing Standalone Java Application to a Dynamic WEB Application which can be deployed on Apache-Tomcat Server container ?
View 2 Repliesi have an application with access .accdb as backend.How can i convert the backend to OracleBL (Visual Studio 2010 Ultimate)
View 3 RepliesI am reading a csv file in to a datatable in vb.net and making a few checks and appending an extra column. I then want to perform a bulk insert using microsofts Oracle.DataAccess (no choice in this) to an Oracle database. what would be the best way to perform this as there is no bulkImport like in SQLserver.
View 2 Replies