Raising Errors In A Catch Block In SQL2005

May 3, 2006

When a catchable error occurs in a try block, control is passed to the
associated catch block. While I am then able to examine properties of
the error using such functions as ERROR_NUMBER() in the catch block,
the error-logging scheme used in my company requires that the actual
error be raised so that it can be picked up by components in the next
tier. I appear to be unable to do that -- I can raise some other error
that has all of the properties of the original except the error number.
For example, division by zero raises error 8134. If the code that
produces that error is enclosed in a try block, I seem to be unable to
raise that error from the catch block. Of course, if I never used the
try block to begin with this wouldn't be a problem, but then we
wouldn't have the advantages of this structure as it applies to other
errors, some of which we may wish to handle differently. While
Try-Catch looks great as a way of allowing us to handle errors in a
customized way and to avoid having all errors be passed up to our
middle tier, it seems that we are unable to pass ANY such errors
forward, and that is a problem for us, too. Is my understanding of
this situation correct, or is there some way around this problem, e.g.,
is there any way I could have raised error 8134, in the above example?
Thanks.

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Try Catch Doesn't Catch Errors Inside A Data Flow Transformation Script Component

Feb 15, 2007

Hi,

I'm having trouble with a Script Component in a data flow task. I have code that does a SqlCommand.ExecuteReader() call that throws an 'Object reference not set to an instance of an object' error. Thing is, the SqlCommand.ExecuteReader() call is already inside a Try..Catch block. Essentially I have two questions regarding this error:

a) Why doesn't my Catch block catch the exception?
b) I've made sure that my SqlCommand object and the SqlConnection property that it uses are properly instantiated, and the query is correct. Any ideas on why it is throwing that exception?

Hope someone could help.

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Raising Errors In Validate() Method

Feb 8, 2006

Hi,

I am building a custom component. In the Validate() method I am checking for various things. Here's a section of my code:
if (ComponentMetaData.InputCollection[0].InputColumnCollection.Count != 1)
{
return DTSValidationStatus.VS_ISBROKEN;
throw new Exception("You need to select one and only one column");
}



The problem I'm finding is that my Exception never gets thrown so I never see the error in the UI. if I reverse the 2 lines like so:
if (ComponentMetaData.InputCollection[0].InputColumnCollection.Count != 1)
{
throw new Exception("You need to select one and only one column");
return DTSValidationStatus.VS_ISBROKEN;
}

Then I get my error message in the UI but I never get anything returned from my Validate() method - which doesn't seem quite right to me.

I don't like using FireError() either because it merely puts the error into the Task list window - and who ever looks at the Task list window???



I'm basically just after some guidance about what people think is the "proper" way of doing this. At the moment I prefer to throw an exception because that way I get some errors in the UI.

Regards

Jamie

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Try.. Catch Block

Dec 11, 2006

HI,
i'm trying to execute some sql using the Try.. Catch blocks.

Following code does not execute in Catch Block

Begin
begin try
insert into dbo.Test values (1,'aaa')
-- here we are inserting int value in identity field...
END TRY
Begin catch
PRINT 'TEST'
SELECT
ERROR_NUMBER() AS ErrorNumber,
ERROR_SEVERITY() AS ErrorSeverity,
ERROR_STATE() as ErrorState,
ERROR_PROCEDURE() as ErrorProcedure,
ERROR_LINE() as ErrorLine,
ERROR_MESSAGE() as ErrorMessage;
END Catch
End
GO


Whereas the following block works fine and the Catch block executes.

Begin
begin try
Select 1/0
--This causes an error.
END TRY
Begin catch
PRINT 'TEST'
SELECT
ERROR_NUMBER() AS ErrorNumber,
ERROR_SEVERITY() AS ErrorSeverity,
ERROR_STATE() as ErrorState,
ERROR_PROCEDURE() as ErrorProcedure,
ERROR_LINE() as ErrorLine,
ERROR_MESSAGE() as ErrorMessage;
END Catch
End
GO





Any idea why is it so?

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Try Catch Block

Apr 12, 2006

Hi:

one of our study group members noticed a strange behavior and has the following question. Any thoughts are appreciated.
I am unable to understand as to why the CATCH block is not executed when an INSERT is made
On table T3 which is dropped after the first transaction.

The severity of Insert into t3 values (3) is Msg 208, Level 16, State 1, Line 2
Invalid object name 't3'.

BOL says TRY€¦CATCH constructs do not trap the following conditions:
Warnings or informational messages with a severity of 10 or lower.
Errors with severity of 20 or higher that terminate the SQL Server Database Engine task processing for the session. If an error occurs with severity of 20 or higher and the database connection is not disrupted, TRY€¦CATCH will handle the error.


Here is the script.




use tempdb
go

create table t1 (a int)
create table t2 (b int)
create table t3 (c int)


Begin tran

Insert into t1 values (1)
Insert into t2 values (2)
Insert into t3 values (3)

IF @@error <> 0
Rollback tran
else
commit tran
-------------------------------------------------------------

Select * from t1
Select * from t2
Select * from t3
-------------------------------------------------------------

Drop table t3

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

Set xact_abort on
Begin try
Begin tran insertNow

Insert into t1 values (1)
Insert into t2 values (2)

save tran insertNow

Insert into t3 values (3)
commit tran insertNow
End try

Begin Catch

IF (XACT_STATE()) = -1
BEGIN
PRINT 'The transaction is in an uncommittable state.' +
' Rolling back transaction.'
ROLLBACK TRANSACTION insertNow
END;

-- Test if the transaction is active and valid.
IF (XACT_STATE()) = 1
BEGIN
PRINT 'The transaction is committable.' +
' Committing transaction.'
COMMIT TRANSACTION insertNow
END

End Catch



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Transactions & TRY CATCH Block.

Oct 10, 2006

Can anyone give a template for a stored procedure which involves a transaction and has a TRY CATCH block too...

Thanks in advance.

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Sep 30, 2007

 I guess this is a common problem because I ran into a lot of threads concerning the matter. Unfortunately, none of them helped my situation.I am throw a RAISERROR() in my sql and my vb.net try catch block is not detecting an error. SELECT '3'
RAISERROR('testerror',10,5)  Dim con As New SqlConnection Dim _sqlcommand As New SqlCommand con = New SqlConnection(Spiritopedia.Web.Globals.Settings.General.ConnectionString) _sqlcommand.CommandType = Data.CommandType.StoredProcedure _sqlcommand.CommandText = "TestFunction"
_sqlcommand.Connection = con


'The value to be returned
Dim value As New Object
'Execute the command making sure the connection gets closed in the end

Try

'Open the connection of the command
_sqlcommand.Connection.Open()
'Execute the command and get the number of affected rows 'value = _sqlcommand.ExecuteScalar().ToString()

value = _sqlcommand.ExecuteScalar()


Catch ex As SqlException Throw ex Finally

'Close the connection
_sqlcommand.Connection.Close()
End Try
  

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Sep 3, 2004

Is there any way to clear out the exception from a previous Try/Catch block if I am nesting another Try/Catch block within it. I am executing a SQL Command and based on the Error number coming back decide whether or not to execute various other Sql commands. Now the Outer exception seems to be taking precedence over the Inner try block, and even though the code is stepped through for the inner try block it is never executed due to the Parent Exception. Is there any way to clear the exception received from the outer Try block? Here is a snippet of code:


Try

Cmd = New SqlCommand(Sql, Con)

Cmd.ExecuteNonQuery()

Catch t as SqlException

if t.Number = "2601" then

sql_upd = "<Text>"

Try

Cmd_upd = New SqlCommand(Sql_upd, Con)

Cmd_upd.ExecuteNonQuery()

Catch b as Exception

response.write("<Text>")

End Try

End If

End Try
Thanks,

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Feb 25, 2015

I encountered a werid bug that I can't figure it out in my stored procedure.Here's some sample code the can represent the scenario

Create Proc sp_test
@DeptID Int
as
Begin
Declare @i int=0
Declare @Count int=(Select count(*) from Total)
while(@i<@Count)

[code]....

In the above code Total is a table that has employee name and its department ID and row_number info.The above code should list all employee info that belongs to one DEpt.but after I placed a try catch block the select statement returns no records.If I removed the try catch block it behaves correct.For example If three records reside in the Total table for a certain DeptID.

I expect the outPut will be
Name age salary
Mike 35 $60006
Tom 50 $75000
Frank 55 $120000

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TRY...CATCH Block Not Working Properly

May 25, 2008

Can someone please help me figure out why this trigger causes a "Timeout expired" error after the first try? What I'm trying to do is create an incrementing default value for the projectid field. I have a unique index on the field and for some reason, the INSERT statement won't run inside the TRY block, even though the WHILE loop creates a unique id. It's acting like the loop isn't incrementing, but the PRINT statements prove that the loop does work, but the INSERT statement doesn't work after a succesful first try (i.e. NEWPROJ-1 is inserted correctlly). Anyways, any help would be appreciated.





Code Snippet
GO
/****** Object: Trigger [Projects].[CreateID] Script Date: 05/25/2008 14:16:32 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

ALTER TRIGGER [Projects].[CreateID]
ON [Projects].[tblProjects]
INSTEAD OF INSERT
AS
DECLARE @projectid varchar(25)
DECLARE @projectname varchar(100)
DECLARE @projectepskey int
DECLARE @maxcount int
SELECT @maxcount = 1

BEGIN
SET NOCOUNT ON;
SELECT @projectname = projectname
FROM inserted
SELECT @projectepskey = projectepskey
FROM inserted

SELECT projectid
FROM Projects.tblProjects
WHERE (projectid = 'NEWPROJ')

IF (@@RowCount = 0)
BEGIN
SELECT @projectid = 'NEWPROJ'
INSERT INTO Projects.tblProjects(projectepskey, projectid, projectname)
VALUES
(@projectepskey, @projectid, @projectname)
END
ELSE
BEGIN
WHILE @maxcount >= 1
BEGIN

BEGIN TRY
SELECT @projectid = 'NEWPROJ-' + CONVERT(varchar, @maxcount)
PRINT @projectid
INSERT INTO Projects.tblProjects(projectepskey, projectid, projectname)
VALUES
(@projectepskey, @projectid, @projectname)
BREAK
END TRY
BEGIN CATCH
SELECT @maxcount = @maxcount + 1
PRINT CONVERT(varchar, @maxcount)
CONTINUE
END CATCH;
END
END
END









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Mar 6, 2014

I have a Stored Proc which populates a table and then uses BCP to output the table into a flat file and lastly ftp the file out to a remote site.

I'm trying to update the error handling as I first wrote this script on SQL2000 and it has now moved to SQL2008r2. The stored proc looks something like this:

BEGIN TRY
BEGIN TRANSACTION
<A whole bunch of inserts and updates>
COMMIT TRANSACTION
END TRY
BEGIN CATCH
<Error handling>
ROLLBACK TRANSACTION
END CATCH
BEGIN
<xp_cmdshell, BCP, FTP stuff>
END

What I need to do is jump to the end of the script if an error invokes the CATCH block, so the xp_cmdshell stuff is not exicuted. Can I simply put a GOTO statement to take it to the end in the CATCH block, or do I have to set a variable in the CATCH block then test the variable outside the CATCH block or indeed is there a better way to simply terminate the script following the ROLLBACK?

[URL]

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Feb 26, 2008

Hi everybody:

I wanted to handle with the deadlock issue by using Try/Catch, the the try/Catch block cannot capture this kind of deadlock:


code in connection1:
declare @i int
set @i = 0
WHILE (1=1)
begin
ALTER PARTITION SCHEME PartationedTableA NEXT USED [PRIMARY]
ALTER PARTITION FUNCTION PartationedTableA () SPLIT RANGE (14661)
ALTER PARTITION FUNCTION PartationedTableA () MERGE RANGE (14661)
end


code in connection2:
declare @rowcount int
while 1=1
begin

begin try
select @rowcount =count(0) from PartationedTableA where col1=50021
end try
begin catch
print error_number()
end catch
end

run them at the same time in SSMS, the code in cn2 would get a error in several seconds:
Msg 1205, Level 13, State 55, Line 10
Transaction (Process ID 52) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.

I tried using TRY/CATCH to capture anoter deadlock whose Error_State is 45, and it works fine.

Does anybody know why Try/Catch cannot capture my deadlock, does the different state make senses?

Thanks.


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Begin Catch Block Executed When Try Completes Without Error

Dec 10, 2007



I was just debugging a stored procedure visual studio and I was surprised with what I was watching.

I'm running SQL 2005 and visual studio 2005. I have a set of nested try/catch blocks.

It fails on the first try and drops into the catch block just as it should. Within the catch block a dynamic sql statement is created. A try block begins and attempts to exec(@sql). It then drops to the catch block. However, I copy the statement into SQL Management Studio and it runs without error everytime.

Why is it dropping into the catch block? Logically it should just complete executing the statement continue without going into the catch block.

Do I have to reset the raiserror values between try blocks or something?



--Thanks--



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Mar 3, 2008



Hello, I have stored procedure that when executed it will check to see if a given name is found in the database, if the name is found, I would like to have it continue on to do its work, however if the name is not found, I would like it to raise an error and then stop execution at that point, however, the way it is currently working is, if the name is not found, it catches the error, raises it and then continues on and tries to do its work, which then it bombs out because it can't. I wasn't sure if there was a way to stop the execution of the procedure in the catch statement. I don't think I want to raise the error level to 20-25 because I don't want to drop the connection to the database per say, I just want to halt execution.

Here is a simple example of what I have:




Code Snippet
begin try

if not exists (select * from sys.database_principals where [name] = 'flea')

raiserror('flea not found', 16, 1)
end try
begin catch

declare @ErrorMessage nvarchar(4000);
declare @ErrorSeverity int;
select

@ErrorMessage = error_message(),
@ErrorSeverity = error_severity();
raiserror(@ErrorMessage, @ErrorSeverity, 1);
end catch
go

begin

print 'hello world'
end






At this point, if the user name (flea) is not found, I don't want it ever to get to the point of 'Hello World', I would like the error raised and the procedure to exit at this point. Any advice would be appreciated on how to best handle my situation!

Thanks,
Flea

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Mar 20, 2008

I use a CLR external function to call a payment gateway, for some reason, I could not get any status sometime, check the following code, I expect I get either -2 or -3 in status no matter what error happens - include the gateway error or the CLR error since I have try catch there. Do you think the following code could miss any problem?


begin try
....

select @postresult=dbo.linkclr_u_webpost(@posturl,@postdata)

update link_payments set ccagentcode=@ccagentcode,status=-2,postresult=@postresult where id=@paymentid


....
end try
begin catch
select @message=
'<br>ErrorNumber: '+cast(ERROR_NUMBER() as varchar)+char(13)+
'<br>ErrorSeverity: '+cast(ERROR_SEVERITY() as varchar)+char(13)+
'<br>ErrorState: '+cast(ERROR_STATE() as varchar)+char(13)+
'<br>ErrorProcedure: '+isnull(ERROR_PROCEDURE(),'')+char(13)+
'<br>ErrorLine: '+cast(ERROR_LINE() as varchar)+char(13)+
'<br>ErrorMessage: '+isnull(ERROR_MESSAGE(),'')+char(13)

update link_payments set status=-3,postresult=@message where id=@paymentid
return -1
end catch

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Apr 10, 2008

Ive started using try/catch in my t-sql code now and I rather like it, since im a C# developer. I read that some errors with an error code below 10 will not cause the catch block to be entered. What kind of errors does this include ?

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Jul 7, 2006

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Or more simply,
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Thanks

- John

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Oct 13, 2006

I am investigating the feasibility of a configuration with 3 databases on SQL2005

DB_A is an OLTP database and serves up transactional publication pub_txn - with updateable subscriptions

DB_B is a subscriber database which subscribes to pub_txn

DB_B is also a publisher which serves up merge publication pub_merge

DB_C is a subscriber database which pulls pub_merge

===============================

Updates on DB_A are successfully replicated to DB_B

Howvever, when DB_C pulls updates, it doesn't find the update sent to DB_B

===============================

Updates on DB_B are successfully replicated to both DB_A and DB_C

===============================

Updates on DB_C initially failed with the error

Msg 916, Level 14, State 1, Procedure trg_MSsync_upd_course_type, Line 0
The server principal "repllinkproxy" is not able to access the database
"DB_C" under the current security context.

I then changed the login repllinkproxy to be a db_owner in DB_C

I now get the error

Msg 208, Level 16, State 1, Procedure sp_check_sync_trigger, Line 23
Invalid object name 'dbo.MSreplication_objects'.

=================================


I have three questions as a result
1) Is there anything fundamentally wrong with what I am trying to achieve?

2) Why is update on DB_A not reaching DB_C

3) Why can't I update DB_C?

Any suggestions gratefully received

aero1





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Nov 7, 2007

Hi,

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If I install SQL2005 manually by setting a named instance (CSERV), Windows Authentication mode, activating the option "set the local account as SQL administrative account" (translated from italian and suggested with Vista) I get the following error (read from the LOG):

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So in the first case it seems that SQL2005 don't recognize the local account as administrator even if the user has administrative privileges (at least for Vista), in the second case is Vista that is blocking the action.

What is the solution??

Thank you and regards.

Roberto G.

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alter proc updatePrereq
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@pmax int
as
begin

[Code] ....

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set @z = 1
declare @max int
set @max = 5
while @z <= @max
begin
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set @z = @z + 1
end
go

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Oct 23, 2007

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using (SqlConnection fbConnect = new SqlConnection(appProperty.dbconnect))
{
SqlCommand fbCmd = new SqlCommand(sproc, fbConnect);
fbCmd.CommandType = CommandType.StoredProcedure;
..... parameter stuff......
SqlParameter val = fbCmd.Parameters.Add(new SqlParameter("@ReturnValue", SqlDbType.Int));
val.Direction = ParameterDirection.ReturnValue;
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fbCmd.ExecuteNonQuery();}
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Apr 23, 2006

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Jul 23, 2005

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May 15, 2007

hi all,



All of a sudden my application started crashing when trying execute dml statements on sql server mobile database (sdf file). Frustating thing is that whole application crashes without any error message. this happens for all kinds for DML statement but not all the time. Sometimes it would fail for delete statement such as delete from table; or for insert into statement



my problem catch does not catch the error. There is no way to find out teh what is causing this error



SqlCeConnection sqlcon = new SqlCeConnection("

Data Source = '\Program Files\HISSymbol\HISSymboldb.sdf';"

);

SqlCeCommand sqlcmd = new SqlCeCommand();

sqlcmd.CommandText = Insert into company('AA', 'Lower Plenty Hotel');

sqlcmd.Connection = sqlcon;

SqlCeDataReader sqldr = null;

try

{

sqlcon.Open();

//use nonquery if result is not needed

sqlcmd.ExecuteNonQuery(); // application crashes here



}

catch (Exception e)

{

base.myErrorMsg = e.ToString();



}

finally

{

if (sqlcon != null)

{

if (sqlcon.State != System.Data.ConnectionState.Closed)

sqlcon.Close();

sqlcon.Dispose();

}

}//end of finlally

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Dec 15, 2005

hi

i try to restore a bak file from another sql2005 server to my sql2005 server, but it show the error message as below :

 

 

TITLE: Microsoft SQL Server Management Studio Express
------------------------------

An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.Express.ConnectionInfo)

------------------------------
ADDITIONAL INFORMATION:

Cannot open backup device 'C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLBackupackup.bak'. Operating system error 5(error not found).
RESTORE HEADERONLY is terminating abnormally. (Microsoft SQL Server, Error: 3201)

For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=09.00.1399&EvtSrc=MSSQLServer&EvtID=3201&LinkId=20476

------------------------------
BUTTONS:

OK
------------------------------


 

 

 

pls some one can help me ???

 

thanks

chaus

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Oct 12, 2007



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Upgraded SQL2000 To SQL2005, SQL2005 VERY Slow

Dec 27, 2005

I just upgraded my SQL 2000 server to SQL2005. I forked out all that money, and now it takes 4~5 seconds for a webpage to load. You can see for yourself. It's pathetic. When I ran SQL2000, i was getting instant results on any webpage. I can't find any tool to optimize the tables or databases. And when I used caused SQL Server to use 100% cpu and 500+MB of ram. I can't have this.Can anyone give me some tips as to why SQL 2005 is so slow?

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Sql2005 Standard To Sql2005 Enterprise Edition

Jan 4, 2007

Hi

We have Sql2005 x64 bit standard edition server installed in windows 2003 64 bit editio server,

currently due to buisness requirements we need to have sql2005 x64 bit enterprise edition, please let me know how do i do the upgrade or change.

is it possible to retain all our custom settings in the standard edition after changing to enterprise edition.

This has to be done for our production and very critical, please help



Thanks

Samuel I

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Install Sql2005 32 Bit After Removing Sql2005 64 Bit

Sep 19, 2007



I am unable to install 32-bit SQL Server Integration Services on the server due to something that was left behind by the 64-bit version.


I've uninstalled SQL Server 2005 64-bit and when I try to install the 32-bit version of Integration Services, I get this error: "Failed to install and configure assemblies C:Program Files (x86)Microsoft SQL Server90DTSTasksMicrosoft.SqlServer.MSMQTask.dll in the COM+ catalog. Error: -2146233087 Error message: Unknown error 0x80131501 Error descrition: FATAL: Could not find component 'Microsoft.SqlServer.Dts.Task.MessageQueueTask.ServCompMQTask' we just installed."




I can't seem to figure out how to resolve this problem with the COM+ and I can't remember if Integration Services is required.

Can anybody please advise?

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Migrating Sql2005 Vb Dts Package To Sql2005

Jul 8, 2007

Hello,



I have a vb program that include a dts package that has been saved to vb with sql2000 dts wizard and works very good.



Now that I upgrade my website to sql2005, this vb dts package doesn't work.

The error I get is:



Microsoft Data Transformation Services (DTS) Package

Invalid STDGMEDIUM structure

(Microsoft Data Transformation Services (DTS) Package (80040066): Invalid STDGMEDIUM structure

) (Microsoft SQL-DMO (ODBC SQLState: 42000) (80004005): [Microsoft][ODBC SQL Server Driver][SQL Server]Incorrect syntax near ')'.)



I searched in the internet how to make dts package in sql2005 and save it to vb and found no information about it.

What Can I do to get the vb code of the dts package I create in sql2005 or how do i migrage the sql2000 vb dts package code to sql2005?



Thanks,

Kubyustus









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