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I have to fill a survey form with data from an oracle database.
We debate two ideas: use a dataset object or a XML file.
For XML file I would use forward only method of reading the file and not DOM, faster.
Is it more efficient generating the XML from database and then parsing the XML on the application server then using a data set returned from the database ?
Thank you
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Hi,
I am working in ASP.NET. I need to get the list of Servers registered on the local machine. How can I get this??
regards
Mubashir
Every job is a self portrait of the person who did it.
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I haven't seen a pure ADO.NET solution for this (I guess this is what you're looking for) but if you can't find such a solution there as an alternative way..
SQLDMO object! Here SQLDMO.Application you'll find a method called ListAvailableSQLServers! Just add a reference to your project and create an instance of it and you've got your list.
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thanks,
I tried it but it is returning 0 servers. Why is this so? I am using Windows XP and SQL Server 2000.
regards
Mubashir
Every job is a self portrait of the person who did it.
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There are several possible reasons for this..
The database might be hidden - to check open sql manager and select the properties by right clicking on the protocols node of the db instance. Look for "HideInstance"..
It could also be that you're running into a latency problem, if your server isn't responding fast enough you won't see it. But it would say this is unlikely on "localhost"!
If this still doesn't help, you might want to use a workaround. You could easily enumerate this registry key: SOFTWARE\Microsoft\Microsoft SQL Server - InstalledInstances
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Thanks for your quick help...
i tried SOFTWARE\Microsoft\Microsoft SQL Server - InstalledInstances, but it doesnt contains Server Information registered in a SQL Server Group. How can I get that  ?
regards
Mubashir
Every job is a self portrait of the person who did it.
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Can this be done running in the normally restricted rights of an IIS client?
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Problem Description:
ADO .Net transaction fails for distributed databases and also even for a simple SQL Query that uses Dblink to Connect Oracle 8i.
When we fetch (query) data in SQL Server 2000 using dblink and connect to Oracle 8i and if this entire query is with-in ADO .Net transaction, then it fails. But the same query works fine without transaction.
Sample SQL query using DBLink in SQL Server.
Oracle Server Name for example: ORADB
Stored Procedure Name: UseDBLinkSP
SELECT * FROM [ORADB].SchemaName.TableName WHERE condition
Sample code in C#:
SqlConnection sqlCon = GetConnection ();
sqlCon.Open();
SqlTransaction trans = sqlCon.BeginTransaction();
try
{
DataAccessClass.getRecords(UseDBLinkSP, trans);
trans.Commit();
}
catch(Exception ex )
{
trans.Rollback();
throw ex;
}
finally
{
if (sqlCon != null && sqlCon.State != ConnectionState.Closed)
{
sqlCon.Close();
}
}
.
l Please note that we are only fetching information from the oracle database, but no updations or deletions.
l This is a sample code, in reality above and below dblink query we have couple of SQL Server Stored procedures that will insert/update/delete data in SQL Server also.
When we run the above code in C# or even in SQL Query Analyzer with Begin and CommitTrans it gives this error.
Error Message:
サーバー : メッセージ 7391、レベル 16、状態 1、行 2
OLE DB プロバイダ 'OraOLEDB.Oracle' は分散トランザクションを開始できなかったので、要求した操作は実行されませんでした。
[OLE/DB provider returned message: New transaction cannot enlist in the specified transaction coordinator. ]
OLE DB エラー トレース [OLE/DB Provider 'OraOLEDB.Oracle' ITransactionJoin::JoinTransaction returned 0x8004d00a]
Environment:
1. .NET 1.1
2. ADO .NET 1.1
3. Microsoft SQL Server 2000 - 8.00.760 (Intel X86) Dec 17 2002 14:22:05 Copyright (c) 1988-2003 Microsoft Corporation Enterprise Edition on Windows NT 5.2 (Build 3790: Service Pack 1) 0
4. Oracle 8i on Unix box.
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wrote: This is a sample code, in reality above and below dblink query we have couple of SQL Server Stored procedures that will insert/update/delete data in SQL Server also.
Do you get the same problem with the sample code also? If not then the code above is not valid and does not help solve your problem.
wrote: Error Message:
サーバー : メッセージ 7391、レベル 16、状態 1、行 2
OLE DB プロバイダ 'OraOLEDB.Oracle' は分散トランザクションを開始できなかったので、要求した操作は実行されませんでした。
[OLE/DB provider returned message: New transaction cannot enlist in the specified transaction coordinator. ]
OLE DB エラー トレース [OLE/DB Provider 'OraOLEDB.Oracle' ITransactionJoin::JoinTransaction returned 0x8004d00a]
I don't fully understand the erros message, but it appears to be with Oracle not SQL Server. There is no oracle specific code in the "sample" C# code you have provided. This suggests that the sample is not representative of the problem and therefor invalid.
If the link to Oracle is being made within SQL Server, rather than your C# application. You could attempt to BEGIN and COMMIT TRANSACTION within the stored procedure.
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Appreciate Mackay for your quick and valuable response.Now I totally understood the concept.Can you please help me out for the following query.
-->In Oracle we have the following concept.
SET TRANSACTION READ ONLY;
SELECT * FROM ORDERS;
SELECT * FROM BALANCES;
COMMIT;
If the above thing is correct.Can we handle the same in C# application.If so how can we do that.Awaiting for your response
shaikshavali
-- modified at 12:00 Wednesday 27th December, 2006
shaikshavali.M
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Hi,
I am writing a stored procedure.
I want to update the records in a table.
till i complete the updation of records I want to lock the table and once i complete the updation i want to release the lock on the table.
during the process of updation of records i don't want any other methods to access this table.
How to achieve this
Regards,
Uma
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It happens automatically. As soon as you start making changes the table will get locked until the transaction is completed. Since SQL Server will wrap each statement in its own transaction, if you are updating over several SQL statements use Begin Transaction at the start and Commit Transaction when successfully finished.
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Hi! consider a simple sql query:
SELECT empName FROM tblEmployee
i want the color of text due to result of this query become RED.
i.e.
ram
tom
jenny
bablu
..etc
please help me.
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The database doesn't handle doing text colors. This can only be done by your app after it does the query to the database.
"I'd like to help but I don't feel like Googling it for you."
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i am using vb.net with sql2000
ihave used adodb.connection and adodb.recordset
then i have used a dataadapter and dataset to show resords in datagrid
now i want to update changes made to the data in the datagrid
can any one help me
bhaskar varma
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can be easily found in the MSDN! everything can be done by using the DataAdapter.
example from MSDN:
' Assumes connection is a valid SqlConnection.
Dim adapter As SqlDataAdapter = New SqlDataAdapter( _
"SELECT CategoryID, CategoryName FROM Categories", connection)
adapter.UpdateCommand = New SqlCommand( _
"UPDATE Categories SET CategoryName = @CategoryName " & _
"WHERE CategoryID = @CategoryID", connection)
adapter.UpdateCommand.Parameters.Add( _
"@CategoryName", SqlDbType.NVarChar, 15, "CategoryName")
Dim parameter As SqlParameter = adapter.UpdateCommand.Parameters.Add( _
"@CategoryID", SqlDbType.Int)
parameter.SourceColumn = "CategoryID"
parameter.SourceVersion = DataRowVersion.Original
Dim dataSet As DataSet = New DataSet
adapter.Fill(dataSet, "Categories")
Dim row As DataRow = dataSet.Tables("Categories").Rows(0)
row("CategoryName") = "New Category"
adapter.Update(dataSet, "Categories")
-walter
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Dear friends,
I want to insert a new row in my table which is supposed to be the ditto copy of one of the previous rows. Now the problem is that there is one field in my table having datatype text. This column value is not getting copied from source to destination and i get error from SQL server that it is not allowed to copy text, nvarchar and binary types.
Now if i convert the column value to varchar then it gets coppied. But i dont want to convert it to varchar because varchar has a limit of 8K characters, and my text column may contains more than 8K characters; and they get truncated while converting to varchar.
Please tell me how to copy the text datatype value from one row to the other.
Imtiaz
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Imtiaz Murtaza wrote: I want to insert a new row in my table which is supposed to be the ditto copy of one of the previous rows. Now the problem is that there is one field in my table having datatype text. This column value is not getting copied from source to destination and i get error from SQL server that it is not allowed to copy text, nvarchar and binary types.
With SQL Server 2000:-
Insert Into t4 (f1,f2) Select f1, f2 From t4 Where f1=2
Here f2 field is of type text in t4 table. This query is successfully executing. I guess you are using functions with text type field, which may be a reason for the error.
Imtiaz Murtaza wrote: Now if i convert the column value to varchar then it gets coppied. But i dont want to convert it to varchar because varchar has a limit of 8K characters, and my text column may contains more than 8K characters; and they get truncated while converting to varchar.
Please tell me how to copy the text datatype value from one row to the other.
Try to follow this technique:
Insert Into t4 (f1, f2) Select f1, Substring(f2,1,8000) + Substring(f2,8001,8000) from t4 where f1=3
Hope this may help.
________________________________
Success is not something to wait for, its something to work for.
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Need the steps for importing .dbf file to MS-Access through C# code
Need the steps for exporting MS-Access table to .dbf file(dBaseIII).
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I have merged two datasets using "Dataset.Merge" command, which the data is retrived from two different dBase-III databases of same structure.
Can I create a new database of using dataset, if yes, how...?
Regards,
Kishore.
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i want taht mdb file in vs2005 support utf8 . how? 
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hi all,
first of all Merry Christmas to all of you.
Problem : I'm using MYSQL database, windows forms amd a Grid View. when i'm assigning a DataSet as Datasource to GridView its not working though my dataset has records. Any special configuration is needed ot any property has to be set.
Any type of help will be apprecited.
Regards,
Rahul
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please first check your dataset is data exist or not if yes then you just try it.
I thing it is very use full for you.
DataGrid1.DataSource = objDs.Tables[0].DefaultView();
Enjoy
Pavan Pareta
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I'm not able connect my front end "Borland developer Studio 2006" with postgreSQL 8.1.I'm developing my application with ASP.NET and C#.NET in "Borland developer studio 2006" environment.Please help in this matter by sending the "connection string" and "namespace to use" in db connection..
I'm using layer coding in ASP.NET and C# (code behind).I'm new to postgreSQL 8.1.4,previously i'm using SQL Server 2000,in that i use this codes to connect my front end.
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Web;
using System.Web.Services;
using System.Data.SqlClient;
using System.Web.UI.WebControls;
namespace suyam
{
public class Election
{
public SqlConnection con=new SqlConnection("initial catalog=election;user id=sa");
public SqlCommand cmd;
public SqlDataReader dr;
DataSet ds=new DataSet();
SqlDataAdapter da=new SqlDataAdapter();
hari
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