Using The Same Connection In Multiple Threads -&&> Native Exception
Jan 24, 2006
I found a peculiar thing today while working with SQL Mobile in a multithreaded application (VS2005, application for Pocket PC 2003).
I created a class which has one SqlCeConnection object. Every time I call a function to insert/select/delete something from the local db, I open the connection, execute the query an then close the connection again.
But when I'm calling a function from the db class in thread 1 and in the meantime call a different function (from the same db class of course) in thread 2, things go wrong. Because when function 1 wants to close the connection, function 2 is still using the connection and it will crash my application with a native exception (0xC0000005: access violation).
I can see why the error is happening, but shouldn't there be a nice .NET handled exception instead of a native exception which grinds my app to a hold?
(A workaround I use now is to use multiple connection objects instead of one, but I thought I'd give this feedback anyway)
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Oct 27, 2007
Dear brothers, still have problem with .net compact framework 1.1 (2003) when i try to sync the data between sqlce and sql server 2000 " not from the first time some times from several times of using the syncronization"
is there any services pack for sql ce
what is appropriate cab file(.NET COMPACT FRAMEWORK, SQLCE etc is ARMI,ARM4....) version for windows mobile 5 with intermec CN3 Device
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Jan 11, 2006
Hi!
Here are the details:
- Merge replication is set up between SQL Server 2000 SP3 <-> SQL CE clients
- It is expected for the system to have 100-150 PDA users
- About 80-90 tables are being replicated. About half of the tables are for documents that PDA users create. These tables have to be filtered by SUSER_SNAME() to minimize data transfered and not to allow users to see each others documents. For filtering we used join filters (now there is about 30-40 join filters)
- Tables shared by users have GUID primary key, while other tables have identity columns.
System seemed to work fine when number of tables and number of join filters was about half that it is now.
Now, occasionally we get Native exception 0x00000005 on the PDA after calling Synchronize method of the C# Replication object. Data is transfered to the server, but the application hangs.
In the documentation for SQL Server it is mentioned that performance may suffer from too many join filters so this may be the cause of our problem.
If this is source of the problem one solution would be to use simple horizontal filtering on all tables now included in the join filters (and to add username field to all these tables). We could also reduce number of join filters with denormalisation (which we are not inclined to do).
Any other suggestions? Is our assumption about the source of the error corect?
Can anyone give us some recommendations for database metrics (number of constraints, tables, join filters etc) that can (or do) work with sql ce merge replication.
Thanks!
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Oct 3, 2007
Greetings,
I have written a very basic C# console test app to check the performance and reliability of SQLCE on Windows CE 5.0 (source code below). Running this on different Windows CE 5.0 devices, I always get a 0xc0000005 native exception error when reaching 25592 inserts. It doesn't matter whether the database is empty or not when the test is run, it always fails at that exact number of inserts. Given that I would expect a managed application not to be able to generate native exceptions anyway, and can't really see any reason why it would in this case, I'm at a bit of a loss as to what's going wrong... Any ideas?
Using:
VS2005 w/ SP1
Windows CE 5.0 (on custom SH4 platform and HTC WM5 smartphone)
.NET CF 2.0 w/ SP1 and post SP1 patch
SQLCE 3.0.3600.0
TIA
PS. The same code (with some SQLCE 3.0 specific bits removed - version and result set for checking table existence) works perfectly under .NET CF 1.0 and SQLCE 2.0).
Source code:
using System.Data;
using System.Data.SqlServerCe;
namespace TestDB
{
class Program
{
static void Main(string[] args)
{
SqlCeConnection sqlConnection = new SqlCeConnection();
SqlCeCommand sqlCommand = sqlConnection.CreateCommand();
SqlCeResultSet sqlResult;
string strDatabase = "\TestDB.sdf";
string strTable = "TestTable";
try
{
// Database connection string
sqlConnection.ConnectionString =
"Data Source=" + strDatabase;
// Database file doesn't exist?
if (!System.IO.File.Exists( strDatabase ))
{
Console.WriteLine("Creating database: " + strDatabase);
// Create SQL engine object
SqlCeEngine sqlEngine = new SqlCeEngine(
sqlConnection.ConnectionString);
// Use it to create database
sqlEngine.CreateDatabase();
}
Console.WriteLine("Opening database: " + strDatabase);
// Open database connection
sqlConnection.Open();
// Display SQL version
Console.WriteLine("SQL Version: "
+ sqlConnection.ServerVersion.ToString());
// Check if table exists
sqlCommand.CommandText = "SELECT TABLE_NAME FROM "
+ "INFORMATION_SCHEMA.TABLES WHERE "
+ "TABLE_NAME = '" + strTable + "'";
sqlResult = sqlCommand.ExecuteResultSet(
ResultSetOptions.Insensitive);
// Table doesn't exist?
if (!sqlResult.Read())
{
Console.WriteLine("Creating table: " + strTable);
// Create table
sqlCommand.CommandText = "CREATE TABLE " + strTable
+ "(Sequence integer IDENTITY(1,1) NOT NULL PRIMARY KEY, "
+ "Timestamp datetime DEFAULT GETDATE(),"
+ "Message nvarchar(80))";
sqlCommand.ExecuteNonQuery();
}
string strText;
for (int i = 1; i <= 500000; i++)
{
Console.Write("
Inserted " + i.ToString() + " records ");
strText = "Row Number: " + i.ToString();
sqlCommand.CommandText = "INSERT INTO " + strTable
+ " (Message) VALUES ('" + strText + "')";
sqlCommand.ExecuteNonQuery();
}
}
// SQL error
catch(SqlCeException sqlex)
{
// Display all error messages
Console.WriteLine( "ERROR:" );
foreach (SqlCeError sqlError in sqlex.Errors)
{
Console.WriteLine( sqlError );
}
}
// Other errors
catch(Exception ex)
{
// Display error message
Console.WriteLine( "ERROR:" );
Console.WriteLine( ex.Message );
}
finally
{
// Close connection
if (sqlConnection.State != ConnectionState.Closed)
{
Console.WriteLine("Closing database");
sqlConnection.Close();
}
}
Console.ReadLine();
}
}
}
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Nov 30, 2007
Hi,
I have developed a Smart Device Application using VB.NET 2003 on top of Windows Mobile 2003 platform which is running on Symbol PPT 8846, a model used in our construction sites for gathering data bar-coded on Pipes, trucks...etc. This application uses SQL CE as its back-end database and since its difficult to cover our sites with WI-FI coverage, most of the time the application is running offline. As for that, on a daily basis, synchronization is done in the offices before the system is released into sites. I have been doing several implementations in several projects and till now everything is running fine but until I got a native exception on exporting the data back into the server database. The server database or main database is using Fox Pro and this is what led me to build a Web Service for communication between SQL CE and Fox Pro. Anyways, going back to that mysterious exception, I did some of my intensive debug on what caused it. As a start, I went through the code line by line to check if there was a memory leak from P/Invokes; but I was shocked that the exception was raised from "SQLCEDataAdapter.Fill(Dataset)" function. First thought came to mind was to hard reset and to re-install the application but no luck. Since it was about SQLCE, I moved towards checking the data found in the SQLCE database and tried to de-fragment the data found under the table needed for export. What I mean by de-fragmenting is that I grouped the data under different classes or families and created different tables depending on these classes. Then tried exporting again and Bingo the data was exported except one record...That was so weird!! huh? (The database had 515 records)
So I went for the Query Analyzer to try to view that record but no hope, it was taking too long to view the record, I just left it for more than 15 minutes and still no response from the Analyzer...it was so strange since there was only one record in that table!!!?!!! As going further, I was so curious why this record causing that native and inability to be viewed by the Analyzer?? I did testing on the column-level of that record and found out that you can view all the columns except two : nvarchar(200) and nvarchar (20)....I was able to resolve this problem with an SQL statement to update both columns with empty or dummy values...!!!!!
But after this resolution, I really don't know how it could be controlled later on!! and why it happened??
I would be glad if anyone can give me any advise on why such problem popped out and especially on the column-level in SQL CE?? And how to overcome it?
Thanks for your time and effort,
Looking forward to hear from as soon as possible...
Just for Clarification:
.NET CF 1.0 SP3
SQLCE 2.0
were used
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Sep 27, 2005
ISSUE: While synchronizing data between the PDA and MS SQL Server database, using Active Sync connection, the sync process fails at times and displays an empty error message box and occasionally it shows the following exception: Error During Synchronization: A native exception occurred. ExceptionCode:0xc0000005 ExceptionAddress:0x01627b28 Reading: 0x1e000000 OK to terminate CANCEL to debug Moreover the .SDF file on the PDA gets corrupted. The ActiveSync connection drops as soon as the sync process fails. Later when the .SDF file is deleted and restored the synchronization is successful. Note: The replication monitor in the SQL Server indicates that the synchronization was successful even when the above error occurs.
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Dec 4, 2006
Hi All,
We have written a multithreaded application in which we are maintaining separate Database connections for each thread. these connections are opened and closed at the start and exit of the thread.
We have observed that even if there is only one thread running ( application thread), execution of simple Select queries some times throws Native exception(Error - 0xc0000005 ).
This error comes intermittently. Execution of same query doesn't throw exception.
Further investigation by breaking the debug at the time of native exception and then looking into the stack trace shows that native exception has occured at one of the Native API (CompileQueryPlan() ) which is being called implicitly by the SQL Mobile.
Each time when we see native exception stack trace shows failure at CompileQueryPlan() call.
Let me know if this is a known defect in SQL Mobile 2005 or there is something else that is causing native exception.
Thanks,
Nikhil
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Aug 22, 2007
hi,
do i need to use specially synchronized code if i have multiple threads inserting, updating and reading rows to and from the same database?? in this case, i know that no 2 threads will try to insert or update the exact same row into the DB, however, multiple threads might try to read the same row from the database.
thanks!
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Aug 9, 2006
Hi, I'm trying to stress test my web application, but when I get high load, the queries that used to take 10-20 ms starts taking 500 - 2000+ ms. Or to put it another way, when i run them single threaded i can do about 43000 a minute, when they are run in paralell it drops to about 2500 a minute.
What can i do about this ?
There are severeal queries thats affected, but here is one example:
update [user] with (ROWLOCK XLOCK) set timestamp = getdate() where userid = 1''
btw: im running sql server 2005 sp 1. The stress test is run on 3 machines total (web, sql and client) the client is simulation 400 users, cliking a page as soon as the last one is loaded, ie there will always be 400 page requests.
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Dec 21, 2004
Our company is in the retail business, thus, the window for processing cubes is very small during Christmas season (only 4 hours each day).
To speed things up, we have partitioned our cube at monthly level so, potentially, 12 threads can be run simultantsly. However, when I looked at DTS, I am not so sure whether or how it can accomplish that task. Has anyone tried this before or is aware of another third party tool can do the trick?
thx in adcance,
Carl.
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Mar 3, 2008
Hi All
I have been asked by developers if there is any advantage in processing multiple clustering models simultaneously by using AMO and multiple threads as against processing one after another.
I have limited experience with Analysis Services but based on my reading I don't see this method providing any advantage.
Does anyone have any recommendations or advice? The system Enterprise Edition running on an x86 Server with 2 dual core processors and 4GB of RAM. Would the answer alter if the server running x64 version of SQL Server and Windows.
Thanks
Nadreck
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Jul 16, 2001
Hi Guys,
I am searching for some information on achieving performance improvement by spawning multiple threads in single Stored procedure or rather say within Single Database connection. We have a batch process that updates around 200 tables and each table update takes around 2 mnts. I am trying to optimize this by running these updates in parallel rather than sequential. These all tables are mutually exclusive. I have written a stored procedure which updates these tables in loop. Concern is that every update statement waits for other to get over. I am calling this Sp from Java application. One crude way will be opening multiple connections to database each running separate T-SQL statement. It comes with lot of overhead in opening connections .Is there any way I can force explicitly in T-SQL stored procedure to spawn a new thread for every Update statement. In case I try to do same process from a Java connection.. is there a way I can open multiple threads for each statement under same database connection.
Thanks,
Vikalp
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Jul 24, 2012
we are queirying an stored procedure multiple times same time,from our application. In this case, few processes executing successfully and few getting failed with error "50000 error executing the stored procedure" and if we run thesame process again its getting executed sucessfully.Does the MySQL cannot handle multiple threads same time?
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Aug 14, 2007
Hi,
I am using distributed transactions where in I start a TransactionScope in BLL and receive data from service broker queue in DAL, perform various actions in BLL and DAL and if everything is ok call TransactionScope.Commit().
I have a problem where in if i run multiple instances of the same app ( each app creates one thread ), the threads pop out the same message and I get a deadlock upon commit.
My dequeue SP is as follows:
CREATE PROC [dbo].[queue_dequeue]
@entryId int OUTPUT
AS
BEGIN
DECLARE @conversationHandle UNIQUEIDENTIFIER;
DECLARE @messageTypeName SYSNAME;
DECLARE @conversationGroupId UNIQUEIDENTIFIER;
GET CONVERSATION GROUP @conversationGroupId FROM ProcessingQueue;
if (@conversationGroupId is not null)
BEGIN
RECEIVE TOP(1) @entryId = CONVERT(INT, [message_body]), @conversationHandle = [conversation_handle], @messageTypeName = [message_type_name] FROM ProcessingQueue WHERE conversation_group_id=@conversationGroupId
END
if @messageTypeName in
(
'http://schemas.microsoft.com/SQL/ServiceBroker/EndDialog',
'http://schemas.microsoft.com/SQL/ServiceBroker/Error'
)
begin
end conversation @conversationHandle;
end
END
Can anyone explain to me why the threads are able to pop the same message ? I thought service broker made sure this cannot happen?
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Jun 18, 2014
I have two tables called ECASE and PROJECT
In the ECASE table there is trigger to get the max value of case_id column in ecase based on project and increment one to that case_id value and insert into ecase table .
When we insert a new record to the ECASE table this trigger calls and insert the case_id column value.
When i run with multiple threads , the transaction is rolled back because of trigger . The reason is , on the project table the lock is happening while getting the max value of case_id column based on project.
I need to prevent the deadlock .
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Feb 14, 2006
Hi!!!
I got a problem, if i try to connect with SQL Native client by IP (exemple: 192.168.1.2MYDATABASE) it doesn't work. But I use: HOMEMYDATABASE it works. But in the 2nd case i cannot connect to SQL Server from another computer.
Thanks fr your help.
fred
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Feb 4, 2008
I cannot connect to my SQL2005 server using the old SQL ODBC drivers, I have to use the Native client drivers. The database I am trying to connect to is a SQL 2000 db I just attached. Its owner is a SQL user login, which works fine and can connect remotely.
Thoughts?
Possibly related: http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=96732
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Nov 24, 2006
One of the big problems with the old MDAC was different versions on different client machines. You would test your app with the latest version say, but when you deployed it, it might fail as the client has a different version.
My company develops software for Municipal Government clients. These clients use other SQL Server applications as well as ours, but they can only use one version of the client software (MDAC) on a given desktop. That means if we require a particular MDAC version, but the clients other applications from other vendors don't officially support that MDAC version, the client is in a real jam.
Our software also supports Oracle, which allows our software to specify a particular Oracle Home which points to a directory with a particular version of the Oracle client dlls (along with corresponding registry entries for that Oracle Home), such that we control the exact client version of the Oracle software that the client uses with our applications. This will not interfere with, and is completely seperate, from the default Oracle home installed when you install the Oracle client software.
What I would like to see for the Native Client is the ability to have our applications use the version of the Native Client that we wish to support and deploy without interfering with the Native Client version used by other applications. Have a default Native Client, but allow applications to somehow specify a different Native Client version/set of DLLs.
Is there any such functionality with the Native Client? (I didn't see any mention of such in the documentation, but I thought I'd ask)
If not, are there any future plans to support multiple Native Client versions on the same desktop?
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Oct 18, 2006
Hi,
I have two server instances of SQL on my server MYSRVR: default (SQL 2000) and named SQLX (SQL 2005).
I've been using these strings ok for the default (SQL 2000):
"Server=MYSRVR; Database=mydb; Network=dbmssocn; Integrated Security=SSPI "
"Server=192.168.1.128; Database=mydb; Network=dbmssocn; Integrated Security=SSPI "
and these for the named (SQL 2005)
"Server=MYSRVRSQLX; Database=mydb; Network=dbmssocn; Integrated Security=SSPI "
"Server=192.168.1.128SQLX; Database=mydb; Network=dbmssocn; Integrated Security=SSPI "
But then adding the SQL port 1433 works for the default:
"Server=MYSRVR,1433; Database=mydb; Network=dbmssocn; Integrated Security=SSPI "
"Server=192.168.1.128,1433; Database=mydb; Network=dbmssocn; Integrated Security=SSPI "
But this, for named (SQL 2005) actually connects to default. The SQL port is causing the name SQLX to be ignored.
"Server=MYSRVRSQLX,1433; Database=mydb; Network=dbmssocn; Integrated Security=SSPI "
"Server=192.168.1.128SQLX,1433; Database=mydb; Network=dbmssocn; Integrated Security=SSPI "
Anyone any ideas?
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Apr 13, 2007
Hello All,
I need you help badly. Iam a student and iam working on "Creating a Mobile Application with SQL Server Compact Edition" http://msdn2.microsoft.com/en-us/library/ms171908.aspx . This tutorial works fine until
Create the publication snapshot
In SQL Server Management Studio, in Object Explorer, expand the (local) computer node.
Expand the Local Publications folder, select the publication name, right-click SQLMobile, and then click View Snapshot Agent Status.
In the View Snapshot Agent Status dialog box, click Start.
Make sure that the snapshot job has succeeded before you continue.
When I try to create a snapshot iam getting the following error "An unspecified error had occurred in the native SQL Server connection component." . I have no clue what to do next please help me out.
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Jul 12, 2006
Hi,
I experienced this problems on both Windows Mobile 2003 SE and Windows Mobile 5.0.
Its native development (c++, oledb, atl and mfc).
It's quite simple to reproduce...
1. open a database
2. open a rowset on table A (whatever, valid of course and with both IOpenRowset and ICommandText), read datas and close rowset
3. power off
4. power on
5. try step 2 with another table (failed on openrowset with error 0x80004005) or try table A (sometimes working because of cached memory, sometims failed on Read Datas).
6. being stuck ;-)
Our work-around was, in case we loose our connection (identified by error 0x80004005 on openrowset), we close it and re-open database... ugly for sure, but working.
What I'm looking now is to use some kind of "detection method" like what people in .Net develoment are using "if ConnectionState.Open <> ...) for reopening my database only on demand...
Thanks in advance for any hints,
Fabien.
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May 28, 2008
Dear all,
we have tables with many image columns. We fill these image columns via ODBC and SQLPutData as described in MSDN etc (using SQL_LEN_DATA_AT_EXEC(...), calling SQLParamData and sending the data in chunks of 4096 bytes when receiving SQL_NEED_DATA).
The SQLPutData call fails under the following conditions with sqlstate 08S01
- The database resides on SQL Server 2000
- The driver is SQL Native Client
- The table consists e.g. of one Identity column (key column) and nine image columns
- The data to be inserted are nine blocks of data with the following byte size:
1: 6781262
2: 119454
3: 269
4: 7611
5: 120054
6: 269
7: 8172
8: 120054
9: 269
The content of the data does not matter, (it happens also if only zero bytes are written), nor does the data origin (file or memory).
All data blocks including no 7 are inserted. If the first chunk of data block 8 should be written with SQLPutData the function fails and the connection is broken. There are errors such as "broken pipe" or "I/O error" depending on the used network protocol.
If data no 7 consists of 8173 bytes instead of 8172 all works again.
(Changing the 4096 chunk size length does not help)
Has anybody encountered this or a similar phenomenon?
Thank you
Eartha
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Apr 10, 2007
Hi
i connect to remote Integration Service. i configure server for remote connection( on component services and DCOM config , ... ) .and now i can connect to Integration Service remotely and correctly.
but when i expand Stored Package and then click to expand MSDB this error will hapen:
login failed for user ... .(microsoft sql native client )
please help me
thanks in advance
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Jan 16, 2008
Greetings everyone, I am attempting to build my first application using Microsofts Sql databases. It is a Windows Mobile application so I am using Sql Server Compact 3.5 with Visual Studio 2008 Beta 2. When I try and insert a new row into one of my tables, the app throws the error message shown in the title of this topic.
'((System.Exception)($exception)).Message' threw an exception of type 'System.NotSupportedException'
My table has 4 columns (i have since changed my FavoriteAccount datatype from bit to Integer)
http://i85.photobucket.com/albums/k71/Scionwest/table.jpg
Account type will either be "Checking" or "Savings" when a new row is added, the user will select what they want from a combo box.
Next is a snap shot of my startup form.
http://i85.photobucket.com/albums/k71/Scionwest/form.jpg
Where it says "Favorite Account: None" in the top panel, I am using a link label. When a user clicks "None" it will go to a account creation wizard, and set the first account as it's primary/favorite. As more accounts are added the user can select which will be his/her primary/favorite. For now I am just creating a sample account when the label is clicked in an attempt to get something working. Below is the code used.
private void lnkFavoriteAccount_Click(object sender, EventArgs e)
{
FinancesDataSet.BankAccountRow account = this.financesDataSet.BankAccount.NewBankAccountRow();
account.Name = "MyBank Checking Account";
account.AccountType = "Checking";
account.Balance = Convert.ToDecimal("15.03");
account.FavoriteAccount = 1;//datatype is an integer, I have changed it since I took the screenshot.
financesDataSet.BankAccount.Rows.Add(account);
//The next three lines where added while I was trying to get this to work.
//I don't know if I really need them or not, I receive the error regardless if these are here or not.
this.bankAccountTableAdapter1.Update(financesDataSet);
this.financesDataSet.AcceptChanges();
refreshDatabase();
}
the refreshDatabase() code is here:
private void refreshDatabase()
{
this.bankAccountTableAdapter1.Fill(this.financesDataSet.BankAccount);
//Aquire a count of accounts the user has
int numAccounts = financesDataSet.BankAccount.Count;
//Loop through each account and see which one is the primary.
for (int num = 0; num != numAccounts; num++)
{
//Works ok in frmMain_Load, but when my lnkFavoriteAccount_click calls this, it throws the error.
if (this.financesDataSet.BankAccount[num].FavoriteAccount == 1)
{
//Display the primary account on our home page. User can click the link label & be taken to their account register.
this.lnkFavoriteAccount.Text = this.financesDataSet.BankAccount[num].Name.ToString();
this.lnkFavoriteFunds.Text = this.financesDataSet.BankAccount[num].Balance.ToString();
break;
}
}
}
and my form_load code
private void frmMain_Load(object sender, EventArgs e)
{
refreshDatabase();
}
So, when I click on the lnkFavoriteAccount label, and my new row gets added, the app stops at the following line in my DataSet.Designer
[global:ystem.Diagnostics.DebuggerNonUserCodeAttribute()]
public byte FavoriteAccount {
get {
try {
return ((byte)(this[this.tableBankAccount.FavoriteAccountColumn]));
}
catch (global:ystem.InvalidCastException e) {
//Stops at the following line, this error was caused by 'if (this.financesDataSet.BankAccount[num].FavoriteAccount == 1)'
throw new global:ystem.Data.StrongTypingException("The value for column 'FavoriteAccount' in table 'BankAccount' is DBNull.", e);
}
}
set {
this[this.tableBankAccount.FavoriteAccountColumn] = value;
}
}
I have no idea what I am doing wrong, all of the code I used I retreived from Microsofts help documentation included with VS2008. I have tried used my TableAdapter.Insert() method and it still failed when it got to
if (this.financesDataSet.BankAccount[num].FavoriteAccount == 1)
in my refreshDatabase() method it still failed.
When I look, the data has been added into the database, it's just when I try to retreive it now, it bails on me. Am I retreiving the information wrong?
Thanks for any help you guys can offer.
Johnathon
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Apr 23, 2007
Hi all,
I know that the File connection can be used in the File system task and Flatfile connection can be used in Flat File source or destination, but I don't know which Task or Source/Destination can use the Multiple File connection and Multiple Flatfile connection. Thanks
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Oct 26, 2007
How to use Microsoft Data Link(Udl) type file to connect with SQL Server using SQL Native Client,If i use OLDEDB Connection i can make connection using UDL file with Database ,but how can i use a file for a connection using SQL Native Client.Is there any other data link file that can be used to connect with SQL server using SQL Native Client.
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May 2, 2006
On Windows XP systems I get the following issue when trying to browse the MSDB folder in SSIS
Client unable to establish connection
Encryption not supported on SQL Server. (Microsoft SQL Native Client)
I have noticed another post where several others have noticed the same issue. It appears to only occur on Windows XP installations. Is there a workaround or fix for this?
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Feb 13, 2007
I apologize if this is not the correct forum for this posting. Looking at the descriptions, it appeared to be the best choice.
I am running Windows XP Pro SP2. I have installed the SQL Native Client for
XP. However, when I try to add a new data source through ODBC Connection
Manager, SQL Native Client is not listed as an option. I have followed this procedure on three other systems with no problems. What would be causing the
SQL Native Client to not show up in the list of available ODBC data sources?
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Jan 31, 2007
Hi,
I got an strange problem with one of my packages.
When running the package in VisualStudio it runs properly, but if I let this package run as part of an SQL-Server Agent job, I got the message "The script threw an exception: Exception of type 'System.OutOfMemoryException' was thrown." on my log and the package ends up with an error.
Both times it is exactly the same package on the same server, so I don't know how the debug or even if there is anything I need to debug?
Regards,
Jan
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Apr 23, 2008
I have tried this on several different operating systems (VISTA and XP ) and several versions of SQL NATIVE CLIENT including 2005.90.3042.0
I have a 64 bit "SQL NATIVE CLIENT" connection that fails. The exact same connection and code succeeds on 32 bit.
My customer and I prepend "oledb:" to the connection string and it starts working.
FAILS on 64 bit:
Provider=SQLNCLI.1;Integrated Security=SSPI;Persist Security Info=False;Initial Catalog=Wrigley_Test;Data Source=MONGO;Use Procedure for Prepare=1;Auto Translate=True;Packet Size=4096;Workstation ID=RIPTIDE;Use Encryption for Data=False;Tag with column collation when possible=False;MARS Connection=False;DataTypeCompatibility=0;Trust Server Certificate=False
WORKS
oledb:Provider=SQLNCLI.1;Integrated Security=SSPI;Persist Security Info=False;Initial Catalog=Wrigley_Test;Data Source=MONGO;Use Procedure for Prepare=1;Auto Translate=True;Packet Size=4096;Workstation ID=RIPTIDE;Use Encryption for Data=False;Tag with column collation when possible=False;MARS Connection=False;DataTypeCompatibility=0;Trust Server Certificate=False
I debugged my code to the point that I know it is happening when I call CreateAccessor for my SQL statement.
m_hr=m_pIAccessor->CreateAccessor(DBACCESSOR_ROWDATA, GetCols(), (m_pDBBinds+IsBookmarked()), 0, &m_hAccessor, NULL);
Error:
Microsoft SQL Native Client: Multiple-step OLE DB operation generated errors. Check each OLE DB status value, if available. No work was done.
Does anyone have any suggestions?
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Feb 29, 2008
How can i delete my old threads from Mythreads.
Any Body
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Jan 24, 2001
Hi,
I'm trying to troubleshoot a SQL problem that we are having and I'm having difficulty with identifying the guilty process.
Using NT performance monitor I am monitoring all active Threads on the system and I have noticed that one particular SQLSERVR thread (then number obviously changes with each server restart) is hogging 100% CPU.
Is it possible to find out what process a particular thread number relates to ?
As far as I can tell the SQL SPID (from Enterprise manager) does not correlate to a SQL Thread.
Thanks,
Tim
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Jul 21, 2004
I have an app that is critical to our business. It handles and syncronises several SQL Servers, checks integrety etc. I need to make the app so it can run a few things at once. Does anyone have any experience with this? Currently we use Delphi and ADO. I have been fiddling with DMO to get more performance - I am not sure ADO is very quick for some I tasks I need to do.
I suppose my main question *really* is does ADO/DMO multi-thread and has anyone tried it. If not how do people do it?
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