MSSQL ODBC And Transaction

Feb 20, 2008

Hi There,

I have developed the ODBC app which can work with Oracle as well as MSSQL server databases. I need to use transactions at some level. By setting AUTOCOMMIT OFF and using SET TRANSACTION and BEGIN WORK, COMMIT WORK everything works fine with Oracle. But with MSSQL server does not. Do I need to code something special for MSSQL? Does anyone has example on how to implement transactions with MSSQL server using ODBC?

I tried reading lots of documents on Microsoft site but nothing specifically says how to do this. One way the doc says is using SQLSetConnectAttr with SQL_ATTR_TXN_ISOLATION but does not specify how to.

Any help with appreciated. Thanks in advance.

Milind

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Distributed Transaction Trough ODBC From MSSQL To Oracle

Apr 14, 2007


I lost few days to solve a problem regarding the connection to an Oracle database server (10) with goal to execute a distributed transaction.

The environment was:

Windows Server 2003 Standard
MSSQL Server 2000 Standard
Oracle 10g Production Edition

The connection was quite easy to make with the Microsoft driver, but the error was:
Server: Msg 7391, Level 16, State 1, Line 3
The operation could not be performed because the OLE DB provider 'MSDAORA' was unable to begin a distributed transaction.
OLE DB error trace [OLE/DB Provider 'MSDAORA' ITransactionJoin::JoinTransaction returned 0x8004d01b].

I tried to use the oracle odbc driver, but all kinds of errors were raised, regarding the TNS name and stuff like this. The real cause was that when you create the linked server you must to check the €œAllow inbound process€? in the provider options.

The Oracle ODBC driver allow distributed transactions.

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Sep 17, 2004

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Can one of your pros confirm or deny this?

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May 6, 2008

First off, Devshed is a great place to find information for development. I'm on here daily looking through threads, finding answeres

I'm building a backend for a program that uses msSql 2005 and ODBC .
I'm trying to insert into a table, and it is working, but i would like to find a solution to this error i get from the odbc trace:

Calc f54-5c4ENTER SQLExecute
HSTMT 00924A18

Calc f54-5c4EXIT SQLExecute with return code -1 (SQL_ERROR)
HSTMT 00924A18

DIAG [22018] [Microsoft][SQL Native Client]Invalid character value for cast specification (0)

when i try to insert a value of 0 (zero) into a column that is bound as a double it gives this error.

And one more thing:
if(retcode != SQL_SUCCESS | SQL_SUCESS_WITH_INFO)

shouldnt that work? (if Retcode isnot success OR success_with_info)

Any input would be greatly appreciated!
thanks

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Jun 9, 2006

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Thanks in advance!

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MSSQL ODBC And Transactions

Feb 20, 2008


Hi There,

I have developed the ODBC app which can work with Oracle as well as MSSQL server databases. I need to use transactions at some level. By setting AUTOCOMMIT OFF and using SET TRANSACTION and BEGIN WORK, COMMIT WORK everything works fine with Oracle. But with MSSQL server does not. Do I need to code something special for MSSQL? Does anyone has example on how to implement transactions with MSSQL server using ODBC?

I tried reading lots of documents on Microsoft site but nothing specifically says how to do this. One way the doc says is using SQLSetConnectAttr with SQL_ATTR_TXN_ISOLATION but does not specify how to.

Any help with appreciated. Thanks in advance.

Milind

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Apr 11, 2005

Hello,

I normally use Microsoft Access to retrieve data , via ODBC connection, from a table in a SQLserver database. One of the fields in the table has a value 1 but at times when the data is retrieved into MS Access it turns out to be 100 in Access. Moreover, when I try to change it in Access my computer hangs or it takes a long time before the change is effected. It does not matter from which client Pc this action takes place it remains the same. I am using ODBC SQLserver ODBC driver version 2000.81.9042.00.

I would be grateful if you could help me out of this strange situation.

Regards,

Albert

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Hi,

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Hi,

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EoF

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May 14, 2002

Hi, I wonder if anyone can shed some light on this issue -

We have a client/server program for MSSQL7 and MSSQL2000.
When running client/server - we have our own broker, etc,
the program ends up locking itself on SQL2000; this is not a problem on SQL7.
We noticed that it seems some system tables locking tempdb.
We also noticed that SQL2000 no longer has insert-into/bulkcopy option like SQL7. But, here we don't have temporary tables at all. It's just that we found the lockings in tempdb caused by some sysobjects, sysindexes, etc.
Also, this does not happen to all the systems we have. Some of our machine does not have the self-lock problem; most of the machines have this problem though.

If we don't run client/server, then the program works fine.
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Anyone is familiar with tempdb and locking issues, please provide some hint??? Is it possible that there are some system parameters that we can set to avoid the problem. We haven't found out why some of our machines do not have problem, while most of the machines have this locking problem.

The program is written using ODBC.

Many thanks in advance.

HIBA International

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Mar 6, 2007

The source for this problem can be found http://www.wellytop.com/SQLProblem.zip

This test creates two threads each with a database connection and uses transactions to insert values into the same table.
The objective of this test is to check that a thread cannot read the results from a pending transaction on a different thread.
In effect this checks dirty reads do not happen and transaction locking.

The test runs correctly and displays "PASSED" with MySQL indicating the transaction and threading worked.
When running with MSSQL Express 2005 it reports a deadlock error during a transaction.
It's not really possible to re-run the transaction and I would like MS SQL to operate similar to MySQL, i.e. MySQL waits for the other transaction to finish before the next transaction can operate on those table rows. I'd like to use MSSQL but I am wondering why this error doesn't happen with MySQL and so have, for the moment, chosen to use it as my preferred database solution.
I have experimented with transaction isolation levels and this doesn't seem to solve the problem.

I've tested this with a fresh install of Windows XP SP2 and no firewall turned on.

To run this test with MSSQL Express2005 use the ODBC Data Source Administrator (odbcad32.exe) to create a data source named MyExpressTest and attach this to an empty database that has been created with the default values. Enable the #define MSSQL in the coude otherwise it tests with MySQL.


To run this test with MySQL (to show how this test should work) use the ODBC Data Source Administrator (odbcad32.exe) to create a data source named mySQLNewTest and attach this to an empty database that has been created with the default values. Comment out the #define MSSQL to switch to MySQL mode.

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May 27, 2006

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The error occurs when ODBC tries to connet to SQL server to obtain the default settings. The error I receive is as follows:

Connection Failed;
sqlstate '28000';
sql server error: 18456;
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I am setting the ODBC connection up on a windows XP SP2 machine.
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This is my first time creating an ODBC connection to a Windows 2003 Server and I am wondering if there is some additional config I may have missed out.

Many thanks.

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May 4, 2006

Hello & good day,
I am working on an application in which there is some data need to be updated & deleted on daily basis. Application is written on ASP. Actually on server we're using MSSQL database, we upload data on MS Access contains some records, on server side some process runs and get new data from Access and update MSSQL database.
There is a massive data need to be updated on daily basis so Transaction Log grow unexpectedly and SQL server start showing error. Here is the error detail.
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Please help me out how can I solve this problem. I don’t want this transaction log file.

Second thing is that, what the best way to import data from access to SQL. I want to Import data in Bulk. Right now the way I am doing is that it reads one row from Access DB and then insert it into SQL database. But this process is so slow. Please recommend some better solution.

Thanks in Advance

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Jan 17, 2007

Greeting.

I use OdbcConnection inside clr procedure, for getting data. If I use simple EXEC dbo.clr_proc - all is OK. If I use INSERT...EXEC I recive error message: Distributed transaction enlistment failed.

I set MSDTC security options for No Authentification and Allow inbound and Allow outbound, but it's no use.

Have this problem solution? May be, I must use another method to get my data?



P.S. Linked Servers and OPENQUERY is not applicable. Sybase not describe columns in stored proc result set and one stored proc may return different result set by params.

P.S.S. Sorry for bad english.









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May 31, 2008

Hi All

I'm getting this when executing the code below. Going from W2K/SQL2k SP4 to XP/SQL2k SP4 over a dial-up link.

If I take away the begin tran and commit it works, but of course, if one statement fails I want a rollback. I'm executing this from a Delphi app, but I get the same from Qry Analyser.

I've tried both with and without the Set XACT . . ., and also tried with Set Implicit_Transactions off.

set XACT_ABORT ON
Begin distributed Tran
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.TRANSACTIONMAIN
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.TRANSACTIONMAIN
set REPFLAG = 0 where REPFLAG = 1 and DONE = 1
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.WBENTRY
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.WBENTRY
set REPFLAG = 0 where REPFLAG = 1
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.FIXED
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.FIXED
set REPFLAG = 0 where REPFLAG = 1
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.ALTCHARGE
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.ALTCHARGE
set REPFLAG = 0 where REPFLAG = 1
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.TSAUDIT
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.TSAUDIT
set REPFLAG = 0 where REPFLAG = 1
COMMIT TRAN


It's got me stumped, so any ideas gratefully received.Thx

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Feb 22, 2007

I have a design a SSIS Package for ETL Process. In my package i have to read the data from the tables and then insert into the another table of same structure.

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I have increase and decrease the time to catch the error but it is still there i have tried to set 0 for commandout Properties.

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and

Failed to open a fastload rowset for "[dbo].[P@@#$%$%%%]". Check that the object exists in the database.

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Feb 6, 2007

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An unhandled exception occurred during the execution of the current web
request. Please review the stack trace for more information about the error and
where it originated in the code. Exception Details:
System.Data.OleDb.OleDbException: Distributed transaction completed. Either
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Dec 22, 2006

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Distributed transaction completed. Either enlist this session in a new transaction or the NULL transaction.

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Jan 8, 2008

Hi,

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Microsoft Visual Studio 2012 Shell (Integrated)
Version 11.0.50727.1 RTMREL
Microsoft .NET Framework
Version 4.5.51650

SQL Server Integration Services   
Microsoft SQL Server Integration Services Designer
Version 12.0.1524.0

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Microsoft .NET Framework
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Hi,



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---------------------------------------------------------------------------------------------------
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