I code to exec a store procedre (sp_truncate) to truncate 10tables and using sqlBulkCopy to download a huge data. Both them are working fine.Now I want to use transaction with application (not in store procedure) torollback truncate tables if download is failed.Is it possible to use transaction to work with these two steps?
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I'm using the SqlBulkCopy within my asp.net C# web form. I'm able to upload my excel file, but if the first row has any blank cells in it, that colum does not upload, I was wondering if anyone had any luck in looking for NULL/Blank cells and if so how did you handle them for the insert into the database?
View 6 RepliesI get an error when I try to update a row in an SQL database table with a string of fewer characters than were previously stored. I attempted to correct this problem by using the "PadRight" function in my C# webpage event handler to fill in the remaining characters with spaces, but I don't seem to be able to make that work. So, what do I do when I want to store fewer characters in a table row that has more characters previously stored in it?
View 2 RepliesI have table with 1000 rows. is it possible to delete top 500 rows with truncate statement ??
View 2 RepliesI am confused by some behaviour I am experiencing when I use the SqlBulkCopy command.I have two tables in my SQL server database that I use to upload 2 tables of data from an excel workbook. The primary key of each table is customer account number, the first table being a table of accounts, the second being a table of details with the account number linking the 2 tables creating a one-to-one relationship.The bulk copy works a treat apart from one rather problematic situation I have found when performing error handling. If I put an account into the details table that does not appear in the customer table, instead of causing key violation errors it still adds the entry - I was under the impression that this was impossible?
If I go edit the entry using SQL Server management studio, I cannot change account numbers to anything that does not exist in the other table thus showing that the relationship exists and works when using standard update SQL.Does anyone have any idea why and how data that violates key violations is allowed through when I use SqlBulkCopy?
I want to bulk insert the datatable data into database.I can not use sqlbulkcopy class.since,I am using oledb.
View 3 RepliesI'm using SqlBulkCopy to restore tables from xml backups. One of the table backup is ~200MB large and has a lot of records.
I'm having error:
Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
I read a CSV file into a DataTable.The DataTable in the first image shows each column and type.The types are exactly what they are supposed to be and the data loaded all the rows it was supposed to load.From the second screen shot you can see the database table. SqlBulkCopy is supposed to map column names to database columns by default.According to that logic each column matches up exactly to the database and the column types also match.However,when I run the command it errors on the first row with:
"The given value of type String from the data source cannot be converted to type decimal of the specified target column."
Here is the StackTrace:
"at System.Data.SqlClient.SqlBulkCopy.ConvertValue(Object value, _SqlMetaData metadata) at System.Data.SqlClient.SqlBulkCopy.WriteToServerInternal() at System.Data.SqlClient.SqlBulkCopy.WriteRowSourceToServer(Int32 columnCount) at
[code]...
Anyone have any ideas why this will not import correctly?
http://www.daviddelella.com/Images/Image1.jpg
http://www.daviddelella.com/Images/Image2.jpg
I have written several queries under one single transaction. When any of the query throws an error then the whole transaction should rollback. However, in some rare cases say 2% cases even after the error the next transaction is getting comitted.
note that all transaction processes (opening, committing and rollback) is done through .net.
I am using 64bit windows 2003 for data and application server. And website is configured for runapp32on64.
Can I code to add transaction for some subs? If there is an error in any sub will roll back.For example, sub1 delete some tablessub2 insert data into tables which just be deletedsub3 send out confirmation emailsub4 make submit button disable
View 3 RepliesI am attempting to use SqlBulkCopy to import data from an XML document. I receive the following error when executing WriteToServer: Invalid cast from 'System.String' to 'System.Guid'
View 1 RepliesI have a transaction that has 5 update statements.I am checking that the data is the same as it was when i selected it before i change it, as this will be from a web app that many people could update.
I want to check that the rowcount is 1 everytime i make an update, if it is one then I want to move on, if not I want to rollback and return.
Here is what I have, only it it rolling back on the first attempt everytime.
[Code]....
I am not sure if rowcount is available yet, if not what do I need to use to find out if anyrows are being updated before moving on?
I was facing some serious deadlock issues in a high transaction table.For some select statement i have added nolock .But for few i can not put nolock, as i need accurate data.this select statement becomes a deadlock victim at times.
View 3 RepliesI have the web form whcih processing several web services calls.
If one call failed, it will rollback transactions. But it cannot.
Due to the web services will complete for each call.
I am using sql connection and sql command.
Is it possible to do this?
I'm doing a transaction type that is similar to iBank where people can add their payee. In my SQL database, I have a transaction table which has the date variable. I would like to set in a way that if the user did not express interests to activate the payee, the record will be expired after 1hour.
SELECT @Date = GETDATE()
SELECT @ExpiryDate = DATEADD(hh,1,getdate())
INSERT INTO PAYEETRANSACTION (CUSTID,PAYEETRANSTYPE,PayeeTranDetails,STATUS, PAYEEACCNUM,PAYEEACCTYPE,PAYEENAME,PAYERINITIAL,REF,Date, ExpiryDate)
VALUES
[code]...
I'm getting "This SqlTransaction has completed; it is no longer usable" exception when try to commit my transaction after sqlreader is close.Here is the code sample
[Code]....
...so when I get to commit the transaction it raises the mentioned exception: "This SqlTransaction has completed; it is no longer usable". I have also noticet that Command.Transaction becomes NULL after reader.Close()My question is: Can I use SqlDataReader and SqlTransaction ? Maybe to use BeginExecuteReader and EndExecuteReader ?
Does a DB transaction get automatically rolled back during exception or we should explicitily write transaction .Rollback inside the catch block to rollback a transaction...
View 3 Repliesi have a method that do bunch of inserts in a table
these inserts done through a transaction (with default isolation level)
meanwhile i need to read some committed records from this table by using another method, i create another transaction for 2th method with a ReadCommitted isolation level but it just fails and return a timeout error and also, the DoTransaction cause the entire table inaccessible, how could i apply a row-level lock ?
[Code]....
I've got an odd problem and can't figure out what's causing it. We've got 2 different DataSets in the same project and I'm seeing different generated code from the MSDataSetGenerator. Both projects are .NET Framework 4.
In one DataSet, I can open the .Designer.cs file and there's a line like:
[Code]....
This essentially exposes a Transaction property to any partial class I create so I can do with it what I want (by setting it to something).
In the other DataSet no matter what I try to do, this Transaction property never gets generated. I've right-clicked on both DataSets and chose "Run Custom Tool" to get them to regenerate (I've even tried deleting the .Designer.cs file before doing this) and they both get generated the same.
I tried to make sure all the properties of the DataSets were the same. Both are using .NET Framework 4.0 and VS2010.
The file that does not generate the Transaction was from a .NET 1.0 asp.net web site that has continually been upgraded through different .NET versions. Right now it's at 4.0 but I don't know if that would have anything to do with it.
I have a requirement below;Step 1: I must insert and update record with "xx" Running Number into Tables in Database.Step 2: I must send "xx" Running Number from Step 1 go with Web Service and wait the response.Step 3: If Step 2 has a error. I must roll back Step 1 data that I do in Step 1. But If Step 2 is success, everything is Ok.How can I solve this requirement? and How can I write asp.net code?
View 3 RepliesI have a stored procedure which is part of the aspnetdb but i am using my own database and therefore these stored procedures are added on my sql server locally.So i uploaded the databases to my hosting company 1and1 and created the stored procedures and tables as those in aspnetdb but i get the error as in the title. this is a standard stored procedure which lives in the aspnetdb database but not sure why this is happeningthe code is below which is for aspnet membership createuser a standard stored procedure
[Code]....
I've got all of my ASP.NET requests wrapped in a Session and a Transaction that gets commited only at the very end of the request. At some point during execution of the request, I would like to insert an object and make it visible to other potential threads - i.e. split the insertion into a new transaction, commit that transaction, and move on. The reason is that the request in question hits an API that then chain hits another one of my pages (near-synchronously) to let me know that it processed, and thus double submits a transaction record, because the original request had not yet finished, and thus not committed the transaction record.
So I've tried wrapping the insertion code with a new SessionScope, TransactionScope(TransactionMode.New), combination of both, flushing everything manually, etc. However, when I call Refresh on the object I'm still getting the old object state. Here's some code sample for what I'm seeing:
Post outsidePost = Post.Find(id); // status of this post is Status.Old
using (TransactionScope transaction = new TransactionScope(TransactionMode.New))
{
Post p = Post.Find(id);
p.Status = Status.New; // new status set here
p.Update();
SessionScope.Current.Flush();
transaction.Flush();
transaction.VoteCommit();
}
outsidePost.Refresh();
// refresh doesn't get the new status, status is still Status.Old
I try and update my table with the following
[Code]....
I dont get an error or anything, nothing happens, and the date remains the same.
We are working in a new N-Layered application with EF4 as ORM. As a requirement, we need to give support for both SQL Server and Oracle existing databases.
Our wish was to build a single EDMX model and then generate our business entities from a TT file.
The main problem was that database providers may generate different .NET types from our database field types. In this case, we'll have different EDMX models and then different auto-generated entities, which is more or less the same as have two different applications.
I don't know if we could have different SSDL files with specific database information (one for Oracle and another one for SQL Server) in separete files and share CDSL and MSL information for both databases.
Would be this solution possible?
Someone knows some other way to work with Oracle and SQL Server using EF4?
sql update command. I have created two forms for update,
1. In first one I retrieve details in text boxes vai id entered by user.
2. In second one I display a grid and on the EDIT hyperlink I pass on the value of the primary key to another update page with same syntax as first one. When I click on update button on this next page, I get a successful update message but the data in the
database is not updated. Also I don't get any kind of error.
What is going wrong with the code?
Here is the code for the update page in second situation.. BTW I am displaying the details in a datagrid.
[Code]....
