Throwing Exception In Stored Proc To Catch In C# And Rollback The Transaction
Sep 27, 2007
Hi,
I am using sql2k5. I just wanted to throw an error from stored procedure with some message to C# to rollback my transaction.
Here is how i wnated to do ( in sequence )
C#
=====
Open a connection
Begin the transaction
Execute the command
In the Stored Proc
===========
do multiple operations one by one
if error
stop processing further
Throw the error
C#
========
if exception
rollback the transaction
else
commit the transaction
I have tried using raise error in stored proc but never thrown exception
Can any one let me know how to achieve this scenario??
~Mohan Babu
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Apr 30, 2015
In general as understand if we have a stored procedure that does operations like inserts or updates, it makes perfect sense to use a rollback operation within a transaction.
So, if something goes wrong and the transaction does not complete, all changes will be reverted and an error description will be thrown for example.
Nevertheless, does using a rollback within a try catch statement, make sense in a read only stored procedure, that practically executes some dynamic sql just to select data from some tables?
I have around 100 Stored procedures, all of them read only. Today a colleague suggested adding try-catch blocks with rollback to all of them. But since they are just selecting data, I don't see a clear benefit of doing so, compared to the hassle of changing such a big number of SP's.
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Jul 9, 2007
I am calling a stored procedure that looks like this.
Code:
ALTER PROCEDURE [dbo].[VerifyLogin]
-- Add the parameters for the stored procedure here
@Email nvarchar (100),
@Password nvarchar (200)
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
DECLARE @Count int
DECLARE @Accounts int
SET @Accounts = (Select Count(*) from Users Where UPPER(Email) = UPPER(@Email))
IF @Accounts = 0
BEGIN
RAISERROR('E-mail address not found.', 10, 1)
END
ELSE
BEGIN
SET @Count = (Select Count(*) from Users Where UPPER(Email) = UPPER(@Email) and Password = @Password)
IF @Count > 0
select 1 as Verification
ELSE
select 0 as Verification
END
END
When I enter a login that does not exist, the error is not thrown in .net. Tracing the code shows normal execution. What am I doing wrong?
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Aug 24, 2006
I have a comboBox with some names binded to it....With in the names some of them are like--- Store's Store, and like Danny's Gym...when i select names with ' in them i get this exception
Incorrect Syntax near 'S' Unclosed Question mark before the charectar string ORDER BY "SomeValue".....how could i go about fixing this?????
should i include some king of function that pulls out those quotes??? or what??? any help with this issue
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Feb 26, 2008
I am using Compact Edition 3.5 against the Northwind.sdf database. The following SQL statement throws an error window in Visual Studio 2008 that states "The parameter is incorrect.". This only occurs when I have an input parameter inside the CASE statement.
**********************************************************************************************************
PLEASE DO NOT TELL ME I CAN JUST USE 'WHERE @CompanyName LIKE '%ABB%''
BECAUSE I UNDERSTAND THAT - I WANT TO KNOW WHY THE SYNTAX I HAVE IS
THROWING AN EXCEPTION
**********************************************************************************************************
This throws an exception when input parameter is in the CASE statement:
SELECT [Customer ID]
FROM Customers
WHERE (CASE WHEN @CompanyName LIKE '%ABB%' THEN 1 ELSE 0 END = 1)
This DOES NOT throw an exception (I know they do not get me the same results):
SELECT [Customer ID]
FROM Customers
WHERE (CASE WHEN [Company Name] LIKE '%ABB%' THEN 1 ELSE 0 END = 1)
TIA!
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Jan 31, 2008
I have to create a custom rendering extension for SQL Server 2005 Reporting Services.
I followed the instructions in the MSDN article: http://msdn.microsoft.com/msdnmag/issues/05/02/CustomRenderers/default.aspx
I am running the report server under an administrative account provileges on the local machine (XP Pro SP2).
The Reporting Services is installed for SQL Server 2005 Trial/Evaluation Edition (not expired yet) and has been upgraded to Service Pack 2.
The Report Manager runs under a default ASPNET account.
After deploying the extension according to instructions in the article, I see the custom renderer in the list of available rendering formats in the dropdown in the Report Manager.
However, when I select that renderer and click "Export", a new IE window opens with the following error message:
Server Error in '/Reports$SQLSERVER2005DEV' Application.
That assembly does not allow partially trusted callers.
Description: 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.Exception: That assembly does not allow partially trusted callers.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[Exception: That assembly does not allow partially trusted callers.]
[Exception: An error occurred during rendering of the report.]
[Exception: An unexpected error occurred in Report Processing.]
Microsoft.Reporting.WebForms.ServerReport.ServerUrlRequest(Boolean isAbortable, String url, Stream outputStream, String& mimeType, String& fileNameExtension) +503
Microsoft.Reporting.WebForms.ServerReport.InternalRender(Boolean isAbortable, String format, String deviceInfo, NameValueCollection urlAccessParameters, Stream reportStream, String& mimeType, String& fileNameExtension) +958
Microsoft.Reporting.WebForms.ServerReportControlSource.RenderReport(String format, String deviceInfo, NameValueCollection additionalParams, String& mimeType, String& fileExtension) +84
Microsoft.Reporting.WebForms.ExportOperation.PerformOperation(NameValueCollection urlQuery, HttpResponse response) +143
Microsoft.Reporting.WebForms.HttpHandler.ProcessRequest(HttpContext context) +153
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +358
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +64
Version Information: Microsoft .NET Framework Version:2.0.50727.1433; ASP.NET Version:2.0.50727.1433
My "why is it not working" question basically breaks down to 3 questions:
1. Why does this error say "partially trusted" whereas the new element in the rssrvpolicy.config file explicitly asks for "FullTrust" permissions?
2. Is there any deployment step that I'm missing?
[For now, it's:
- copy-and-paste the dll into ReportServerin directory;
- add a new CodeGroup element to the rssrvpolicy.config file;
- add a new Extension element to the rsreportserver.config file;
- IIS reset;
- Reporting Services service restart.]
3. Also, I checked the deployment instructions in BOL (Deploying Rendering Extension: http://msdn2.microsoft.com/en-us/library/ms154516.aspx), just to make sure I didn't miss anything.
An interesting this is, the BOL article does NOT mention a requirement for adding a new element into rssrvpolicy.config file.
Is this an error in the September 2007 Books Online?
The same error (regarding "partically trusted" - see above) occurs even after I signed the assembly with a strong name key (although this is not mentioned in the articles, but I figured it might be necessary).
Could someone point me in the right direction as to how to properly deploy a custom rendering extension, please?
Thanks a lot!
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Jul 24, 2006
I ran into this a few weeks ago and found that several others had as well, but no one had yet found an answer. I found the answer (at least one of the answers) this weekend and wanted to share it. I had recently added a subreport to a group footer in a table and started getting an error. Depending on the data, the error wasn't always present. I didn't have a problem when I moved the subreport to any other area in the report.
Here is the error I was getting:
An error occurred during local report processing
An internal error occurred on the report server. See the error log for more details.
It was a local report (rdlc), so naturally, there was no error log <g>. I added an event handler for ReportError and collected this information:
7/23/2006 5:18:22 PM
OS: Microsoft Windows NT 5.1.2600 Service Pack 2
*** EXCEPTION ***
Message: Exception has been thrown by the target of an invocation.
Source: mscorlib
Stack Trace: at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
at System.RuntimeMethodHandle.InvokeMethodFast(Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)
at System.Delegate.DynamicInvokeImpl(Object[] args)
at System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEntry tme)
at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)
at System.Threading.ExecutionContext.runTryCode(Object userData)
at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry tme)
at System.Windows.Forms.Control.InvokeMarshaledCallbacks()
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ContainerControl.WndProc(Message& m)
at System.Windows.Forms.UserControl.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(Form mainForm)
at SX.MainProgram.Main() in C:Documents and SettingsMYeagerMy DocumentsVisual Studio 2005ProjectsSXSXMainProgram.cs:line 22
*** INNER EXCEPTION ***
Message: Reporting Service Exception
Source: SX
Stack Trace: at SX.ReportSalesForm.reportViewer1_ReportError(Object sender, ReportErrorEventArgs e) in C:Documents and SettingsMYeagerMy DocumentsVisual Studio 2005ProjectsSXSXReportFormsReportSalesForm.cs:line 84
at Microsoft.Reporting.WinForms.ReportViewer.OnError(Exception e)
at Microsoft.Reporting.WinForms.ReportViewer.UpdateUIState(Exception e)
at Microsoft.Reporting.WinForms.ReportViewer.OnRenderingCompleteUI(ProcessThreadResult result, PostRenderArgs postRenderArgs)
*** INNER EXCEPTION ***
Message: An error occurred during local report processing.
Source: Microsoft.ReportViewer.WinForms
Stack Trace: at Microsoft.Reporting.WinForms.LocalReport.InternalRender(String format, Boolean allowInternalRenderers, String deviceInfo, CreateAndRegisterStream createStreamCallback, Warning[]& warnings)
at Microsoft.Reporting.WinForms.LocalReport.InternalRender(String format, Boolean allowInternalRenderers, String deviceInfo, String& mimeType, String& encoding, String& fileNameExtension, String[]& streams, Warning[]& warnings)
at Microsoft.Reporting.WinForms.ProcessingThread.ProcessThreadMain(Object arg)
*** INNER EXCEPTION ***
Message: An internal error occurred on the report server. See the error log for more details.
Source: Microsoft.ReportViewer.Common
Stack Trace: at Microsoft.ReportingServices.Diagnostics.Utilities.RSTraceInternal.Assert(Boolean condition, String componentName)
at Microsoft.ReportingServices.ReportProcessing.Persistence.IntermediateFormatWriter.WriteVariant(Object variant, Boolean convertDBNull)
at Microsoft.ReportingServices.ReportProcessing.Persistence.IntermediateFormatWriter.WriteScopeTableValues(Object value)
at Microsoft.ReportingServices.ReportProcessing.Persistence.IntermediateFormatWriter.WriteScopeTableValues(Object value)
at Microsoft.ReportingServices.ReportProcessing.Persistence.IntermediateFormatWriter.WriteScopeLookupTable(ScopeLookupTable scopeTable)
at Microsoft.ReportingServices.ReportProcessing.Persistence.IntermediateFormatWriter.WriteSubReport(SubReport subReport)
at Microsoft.ReportingServices.ReportProcessing.Persistence.IntermediateFormatWriter.WriteReportItem(ReportItem reportItem)
at Microsoft.ReportingServices.ReportProcessing.Persistence.IntermediateFormatWriter.WriteReportItemList(ReportItemList reportItems)
at Microsoft.ReportingServices.ReportProcessing.Persistence.IntermediateFormatWriter.WriteReportItemCollection(ReportItemCollection reportItems)
at Microsoft.ReportingServices.ReportProcessing.Persistence.IntermediateFormatWriter.WriteRectangle(Rectangle rectangle)
at Microsoft.ReportingServices.ReportProcessing.Persistence.IntermediateFormatWriter.WriteReportItem(ReportItem reportItem)
at Microsoft.ReportingServices.ReportProcessing.Persistence.IntermediateFormatWriter.WriteReportItemList(ReportItemList reportItems)
at Microsoft.ReportingServices.ReportProcessing.Persistence.IntermediateFormatWriter.WriteReportItemCollection(ReportItemCollection reportItems)
at Microsoft.ReportingServices.ReportProcessing.Persistence.IntermediateFormatWriter.WriteTableRow(TableRow tableRow)
at Microsoft.ReportingServices.ReportProcessing.Persistence.IntermediateFormatWriter.WriteTableRowList(TableRowList rows)
at Microsoft.ReportingServices.ReportProcessing.Persistence.IntermediateFormatWriter.WriteTableGroup(TableGroup tableGroup)
at Microsoft.ReportingServices.ReportProcessing.Persistence.IntermediateFormatWriter.WriteTable(Table table)
at Microsoft.ReportingServices.ReportProcessing.Persistence.IntermediateFormatWriter.WriteDataRegion(DataRegion dataRegion)
at Microsoft.ReportingServices.ReportProcessing.Persistence.IntermediateFormatWriter.WriteReportItem(ReportItem reportItem)
at Microsoft.ReportingServices.ReportProcessing.Persistence.IntermediateFormatWriter.WriteReportItemList(ReportItemList reportItems)
at Microsoft.ReportingServices.ReportProcessing.Persistence.IntermediateFormatWriter.WriteReportItemCollection(ReportItemCollection reportItems)
at Microsoft.ReportingServices.ReportProcessing.Persistence.IntermediateFormatWriter.WriteReport(Report report)
at Microsoft.ReportingServices.ReportProcessing.Persistence.IntermediateFormatWriter.WriteReportSnapshot(ReportSnapshot reportSnapshot)
at Microsoft.ReportingServices.ReportProcessing.ChunkManager.SnapshotChunkManager.SaveReportSnapshot(ReportSnapshot reportSnapshot)
at Microsoft.ReportingServices.ReportProcessing.ProcessingResult.Save()
at Microsoft.Reporting.LocalService.Render(PreviewItemContext itemContext, Boolean allowInternalRenderers, ParameterInfoCollection reportParameters, IEnumerable dataSources, DatasourceCredentialsCollection credentials, CreateAndRegisterStream createStreamCallback, ReportRuntimeSetup runtimeSetup, ProcessingMessageList& warnings)
at Microsoft.Reporting.WinForms.LocalReport.InternalRender(String format, Boolean allowInternalRenderers, String deviceInfo, CreateAndRegisterStream createStreamCallback, Warning[]& warnings)
This wasn't exactly enlightening, an exception in an ASSERT in the reporting services dll, but since I knew that results varied with different data, I tracked it down that way.
THE SOLUTION:
The problem occurs when data for group expression is null. If there is no subreport in the group footer, this isn't an issue, but if there is, you get the error. For instance, if your data comes from a SQL statement with a LEFT OUTER JOIN (as mine did), and the group expression uses a column that contains nulls as a result of the LEFT OUTER, this exception will be thrown. This one was VERY DIFFICULT to track down, but it's easily reproducable. It has nothing to do with what (if anything is) on the subreport, what the data the subreport uses looks like, whether there are parameters or not. It's purely having nulls in the data used by the group expression for the main report. I found that if I changed my SELECT from mytable.mycolumn to ISNULL(mytable.mycolumn, 0) the error went away.
Mike Yeager
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Dec 7, 2005
Hi,
I am new to SQL Server and hence asking this.....
I have a requirement to catch any problem within my code and log it into a table with structure:
CREATE TABLE ERROR_LOG
(MSG varchar(1000),
ERROR_CODE varchar(1000)
)
As an example:
declare @test int
begin
--deliberately assigning a char into an int variable
set @test='ABC'
end
This, as expected throws an error like:
Msg 245, Level 16, State 1, Line 2
Conversion failed when converting the varchar value 'ABC' to data type int.
I want to catch the first line to ERROR_CODE field and the second line to MSG field in ERROR_LOG table
I also need to do it such that this proc seems SUCCEDED with logging into error log
How can I do this in SQL Server?
Please suggest.......
[From Oracle background, actually I am speaking about EXCEPTION Block in Pl/SQL]
Best Regards,
Ayan
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May 6, 2007
Hi all, I have a program that needs to delete records, then re-insert new records to a table. But I need to rollback the transaction IF the insert is not success (error occured). The delete and insert are in 2 difference stored procedure (which have rollback transaction) that calling from 1 stored procedure. My problem is that if Insert is not successful, but the records already deleted previously. How can we rollback the delete transaction when insert is not successful?
Note: if possible, I don't want to delete the records AFTER the insert is successful, or create a temp table to stored the deleted records
=======================================
create stored procedure combine_sp
as
begin
call delete_sp -- have rollback transaction in the delete_sp
-- what to do if following has error occured, but we already deleted the records above?
call insert_sp -- have rollback transaction in the insert_sp
end
go
=======================================
Thanks a lot.
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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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Nov 24, 2014
create proc proc1 (@param1 int)
as
begin try
declare @param2 int
begin transaction
exec proc2 @param2
commit transaction
end try
begin catch
if @@trancount > 0
rollback transaction
end catch
i haven't had an opportunity to do this before. I have nested stored proc and both inserts values into different tables. To maintain atomicity i want to be able to rollback everything if an error occurs in the inner or outer stored procedure.
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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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Mar 25, 2008
Protected Sub detailsview1_ItemDeleting(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DetailsViewDeleteEventArgs)
Dim label2 As Label = CType(detailsview1.FindControl("label2"), Label)
Try
Catch sqlEx As SqlClient.SqlException
If sqlEx.Message.Contains("DELETE statement conflicted with COLUMN REFERENCE") Then
label2.Visible = True
label2.Text = "You cannot delete this Agent Type as it has a call weighting assigned to it, remove the weightings before you try to delete it"
e.Cancel = True
End If
End Try
End Sub Hi, Im using vb.net sql2005 and visual studio 2005
I have 2 tables which have a foregin key relationship. When i try to delete information from within one of my aspx pages it rightly comes up with an application errror, something along the lines of
DELETE statement conflicted with COLUMN REFERENCE constraint 'FK_callScore_agentType'. The conflict occurred in database 'Merlin_####', table 'callScores', column 'typeID'.The statement has been terminated.
I have looked around and can see people talking about using a try catch excpetion however i need to know how id implement this using the detailsview1_itemdeleting event. Ive never used this before and havent found a decent tutorial to help.So far i have this code but im stuck as im not sure that this is correct but more importantly what i put in the try method. Protected Sub detailsview1_ItemDeleting(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DetailsViewDeleteEventArgs)
Dim label2 As Label = CType(detailsview1.FindControl("label2"), Label)
Try
(WHAT GOES HERE)
Catch sqlEx As SqlClient.SqlException
If sqlEx.Message.Contains("DELETE statement conflicted with COLUMN REFERENCE") Then
label2.Visible = True
label2.Text = "You cannot delete this Agent Type as it has a call weighting assigned to it, remove the weightings before you try to delete it"
e.Cancel = True
End If
End Try
End Sub Your help would be greatly appreciated
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Jul 20, 2005
Is there something like exception handling in T-SQL?For example, how to catch an error of convertion at thissample:CREATE PROCEDURE SP@param VARCHAR(50)AS BEGINDELCARE @var INT-- try {SET @var = CONVERT( int, @param)-- } catch (error#245) {-- handle an error right here-- }ENDIt must be invisible for a caller of SP if something wrong inside SP.*** Sent via Developersdex http://www.developersdex.com ***Don't just participate in USENET...get rewarded for it!
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Nov 10, 2006
Hi ,
In the below procedure in emp table name column is not null.
so when i try to update null value it should rollback previous transactions and should not commit.
but it is updating the previous queries and raising error on 3rd query. not rolliing back. I need to rollback previous queries.
the xactstate i get here is 1.
Please help me with this.
ALTER PROCEDURE [dbo].[tran]
AS
BEGIN
SET NOCOUNT ON;
BEGIN TRY
BEGIN TRANSACTION
declare @name varchar(50)
set @name = null
update dept set dname='ddd' where id=10
update emp set name='eee' where id=354
update emp set name=@name where id=354
COMMIT TRANSACTION
END TRY
BEGIN CATCH
IF (XACT_STATE())=-1 ROLLBACK TRANSACTION
END CATCH
END
venp---
Hi ,
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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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Mar 12, 2007
Dear all,
I am running into a null reference exception on replication with SQL Server 2005 Compact Edition. The problem occurs at repl.synchronize(). Even though the statement is inside a try-catch block, the exception is not caught, and the application quits.
Device O/S: Windows Mobile 5.0 v 5.1.195 Build 14957.2.3.1
Hardware: Dell Axim X51v, Intel PXA270
Database: SQL 2005 SP2 (no post SP2-patches)
Exception shows as "an unexpected error has occured in AppName.exe. Select Quit and then restart this program, or select Details for more information." Details:
.. at NullReferenceException at AppName.Form1.Synch()
.. at .... (various lines)
.. at AppName.Form1.Main()
The application is based on the tutorial (Creating a Mobile Application with SQL Server Compact Edition) at http://msdn2.microsoft.com/en-us/library/ms171908.aspx.
The application was successfully working initially but then stopped working on replication after some minor modifications which were not related to the replication code, e.g. adding some buttons to the form.
Three things are puzzling me here..
1. The fact that this is a NullReferenceException and not a SqlCeException
2. Why the try-catch block doesn't work
3. Why the exception occurs
Is this a bug or am I doing something wrong here?
Any help would be appreciated.
Code sample below:
Sub Synch()
Try
LogMsg("Deleting db...")
DeleteDB()
LogMsg("Initializing repl...")
Dim repl As New SqlCeReplication
repl.InternetUrl = http://192.168.0.100/SQLMobile/sqlcesa30.dll
repl.Publisher = "TRKSRV"
repl.PublisherDatabase = "trk_db"
repl.PublisherSecurityMode = SecurityType.NTAuthentication
repl.Publication = "Trk"
repl.Subscriber = "Trk"
repl.SubscriberConnectionString = "Data Source=""Program FilesTrk2007DefectTrk.sdf"";Max Database Size=128;Default Lock Escalation =100;"
LogMsg("Adding subscription...")
repl.AddSubscription(AddOption.CreateDatabase)
LogMsg("Synch...")
repl.Synchronize()
LogMsg("Cleanup...")
repl = Nothing
Catch err As SqlCeException
MessageBox.Show(err.ToString & " " & err.HResult & " " & err.NativeError & " " & err.Message & " " & err.InnerException.ToString)
Catch err2 As Exception
MessageBox.Show(err2.ToString & " " & err2.Message.ToString & " " & err2.InnerException.ToString)
End Try
End Sub
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Apr 17, 2006
For some reason, my stored procedure which is kicked off by VB.NET is growing the log file for the database in question by gigs, very fast. Why is it doing this?
The code:
Sub Main()
objConn.Open()
Dim cmdSql As New SqlClient.SqlCommand("IT_sss_Collector_DotNet", objConn)
cmdSql.CommandType = CommandType.StoredProcedure
cmdSql.CommandTimeout = 1000
Dim reader As SqlDataReader = cmdSql.ExecuteReader()
Dim ppa_rowcount As Integer
ppa_rowcount = 0
If reader.HasRows() Then ' test to see if there is any data in the reader
reader.Read()
ppa_rowcount = Convert.ToInt16(reader("pcount"))
End If
reader.Close()
'Dim ppa_rowcount As Integer = Convert.ToInt16(cmdSql.ExecuteScalar())
MsgBox(ppa_rowcount)
If ppa_rowcount > 0 Then
MsgBox("got here")
RunsssReport()
End If
objConn.Close()
End Sub
The Stored proc:
http:\www.webfound.netstoredproc_growinglogfile.txt
the log is 29 gigs! this is a copy of a production database running on my test server. The production db log is only 15 gigs. How do I manage this and why it is growing at such a crazy porportion just from running this simple stored proc with a cursor???????
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Nov 14, 2006
I'm receiving the below error when trying to implement Execute SQL Task.
"The ROLLBACK TRANSACTION request has no corresponding BEGIN TRANSACTION." This error also happens on COMMIT as well and there is a preceding Execute SQL Task with BEGIN TRANSACTION tranname WITH MARK 'tran'
I know I can change the transaction option property from "supported" to "required" however I want to mark the transaction. I was copying the way Import/Export Wizard does it however I'm unable to figure out why it works and why mine doesn't work.
Anyone know of the reason?
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Jul 7, 2015
We have a high volume database with 1000's of users and 1000's of procs. Our application enforces a 20 second timeout on all connections.
We can't adjust the 20 seconds - this is a business rule.
It sometimes happens that a proc does not complete within 20 seconds and then times out halfway though. This causes data inconsistency where 50% of the code was saved to the DB and 50% was not - seeing that a stored proc is not transactional and therefor does not roll back the code.
We can't put the code in a TRANSACTION in order to roll back when a time out occurs, because this causes exclusive locks on the tables.
So I guess my question is:
Is it possible to undo/rollback all the code in a proc when a timeout occurs - without using a TRANSACTION? And if a TRANSACTION is the only way - how do I avoid the exclusive lock and blocks?
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Aug 11, 2015
I am new to T-SQL programming. I need to write a main procedures to execute multiple transactions. How could I structure the program so that each transaction will not abort if failed. Instead, the next transaction will keep running. At the very end the procedure will output the error and report them back to the main program in the output parameters. Looking for pseudo code.
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Dec 9, 2003
Hi!
I just made a transaction which writes and reads some data from a database as one unit. Now, I would like to know, what happens, if this transaction does not commit, but instead performs a rollback? Should I use a boolean loop which keeps on trying the transaction until it commits or is there an alternative? I would appreciate any suggestions or help!
Thanks!
Timothy
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Feb 26, 2007
How do I find out the transaction name to rollback. Thanks
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Apr 10, 2008
Hi all
I received the following message in the application log files while the QA team is tesing the application.
06:40:31 [ERROR ] com.inet.tds.ao: The connection is closed: there was an error on the database could not rollback the transaction
I checked at the SQL server logs and found any thing odd.
what does the above error indicates..
Thanks.
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Jul 31, 2007
Hi all,
How to work rollback transaction in sql server.
Thanks&Regards
msrs
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Jul 20, 2005
If someone could help me with this I will be in debt to you!I am a .net developer who is working on a system that has a sql server2000 backend. On the weekends, I work from home and I have MSDE on mylaptop. This morning I went to update the main SQL server as I addedsome new views .. however I managed to import the data too!!Therefore I have overwritten my local data to the main sql serverdatabase, which has ressulted in loss of loads of work!Can I rollback to the version before I exported my data from MSDE to themain SQL server. I did the export by using enterprise manager and rightclicking on the table on my local msde and then sending it to the realsql server!Please please please help??*** Sent via Developersdex http://www.developersdex.com ***Don't just participate in USENET...get rewarded for it!
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Jun 15, 2007
i have a froeach loop,in which i have data flow task,which i need to rollback if any other task fails..
here i need to accept multiple files and i have to give a one second pause for between each file for this i have used a dummy for loop,as i am using this for loop i cant give the for each loop property Transaction Option as required...but i need to rollback if any task fails...i have a screen shot of the for each loop
please give me some ideas on this.
Thanks in advance
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Jul 10, 2006
Hi everyone,
In the following T-SQL code snippet,when I attempt to insert more than one record I encounter an error because of the following trigger but I have some doubts about the performation of ROLLBACK TRANSACTION in here. So there is only one transaction occured in the specified table that contain both trigger and the specified table however I supposed that when we call ROLLBACK TRANSACTION, the transaction is aborted. But the code run the Raiserror statement which is located in after the ROLLBACK TRANSACTION statement. So why do this code( Raiserror) is run ? Should not it be terminated because of the ROLLBACK TRANSACTION statement ??
ALTER TRIGGER kimlikNo_Degistir
ON Bilgi FOR INSERT
AS
IF(SELECT COUNT(*) FROM Inserted) > 1
BEGIN
ROLLBACK TRANSACTION
RAISERROR('You are not allowed to enter more than one record',12,1)
END
ELSE
BEGIN
UPDATE M SET M.KimlikNo = B.Kimlk + M.KimlikNo FROM Muhasebe as M INNER JOIN Inserted AS B ON M.Ad = B.Ad
END
Thanks
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Dec 14, 2007
I made a mistake and ran a delete query that I should not have. There have been no other transactions/modifcations to the database since my delete query.
Can I roll this back from the log file?
Please help as soon as you can!
THANKS!!
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Aug 6, 2006
With the function below, I receive this error:Error:Transaction count after EXECUTE indicates that a COMMIT or ROLLBACK TRANSACTION statement is missing. Previous count = 1, current count = 0.Function:Public Shared Function DeleteMesssages(ByVal UserID As String, ByVal MessageIDs As List(Of String)) As Boolean Dim bSuccess As Boolean Dim MyConnection As SqlConnection = GetConnection() Dim cmd As New SqlCommand("", MyConnection) Dim i As Integer Dim fBeginTransCalled As Boolean = False
'messagetype 1 =internal messages Try ' ' Start transaction ' MyConnection.Open() cmd.CommandText = "BEGIN TRANSACTION" cmd.ExecuteNonQuery() fBeginTransCalled = True Dim obj As Object For i = 0 To MessageIDs.Count - 1 bSuccess = False 'delete userid-message reference cmd.CommandText = "DELETE FROM tblUsersAndMessages WHERE MessageID=@MessageID AND UserID=@UserID" cmd.Parameters.Add(New SqlParameter("@UserID", UserID)) cmd.Parameters.Add(New SqlParameter("@MessageID", MessageIDs(i).ToString)) cmd.ExecuteNonQuery() 'then delete the message itself if no other user has a reference cmd.CommandText = "SELECT COUNT(*) FROM tblUsersAndMessages WHERE MessageID=@MessageID1" cmd.Parameters.Add(New SqlParameter("@MessageID1", MessageIDs(i).ToString)) obj = cmd.ExecuteScalar If ((Not (obj) Is Nothing) _ AndAlso ((TypeOf (obj) Is Integer) _ AndAlso (CType(obj, Integer) > 0))) Then 'more references exist so do not delete message Else 'this is the only reference to the message so delete it permanently cmd.CommandText = "DELETE FROM tblMessages WHERE MessageID=@MessageID2" cmd.Parameters.Add(New SqlParameter("@MessageID2", MessageIDs(i).ToString)) cmd.ExecuteNonQuery() End If Next i
' ' End transaction ' cmd.CommandText = "COMMIT TRANSACTION" cmd.ExecuteNonQuery() bSuccess = True fBeginTransCalled = False Catch ex As Exception 'LOG ERROR GlobalFunctions.ReportError("MessageDAL:DeleteMessages", ex.Message) Finally If fBeginTransCalled Then Try cmd = New SqlCommand("ROLLBACK TRANSACTION", MyConnection) cmd.ExecuteNonQuery() Catch e As System.Exception End Try End If MyConnection.Close() End Try Return bSuccess End Function
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Feb 13, 2008
I am working with a large application and am trying to track down a bug. I believe an error that occurs in the stored procedure isbubbling back up to the application and is causing the application not to run. Don't ask why, but we do not have some of the sourcecode that was used to build the application, so I am not able to trace into the code.
So basically I want to examine the stored procedure. If I run the stored procedure through Query Analyzer, I get the following error message:
Msg 2758, Level 16, State 1, Procedure GetPortalSettings, Line 74RAISERROR could not locate entry for error 60002 in sysmessages.
(1 row(s) affected)
(1 row(s) affected)
I don't know if the error message is sufficient enough to cause the application from not running? Does anyone know? If the RAISERROR occursmdiway through the stored procedure, does the stored procedure terminate execution?
Also, Is there a way to trace into a stored procedure through Query Analyzer?
-------------------------------------------As a side note, below is a small portion of my stored proc where the error is being raised:
SELECT @PortalPermissionValue = isnull(max(PermissionValue),0)FROM Permission, PermissionType, #GroupsWHERE Permission.ResourceId = @PortalIdAND Permission.PartyId = #Groups.PartyIdAND Permission.PermissionTypeId = PermissionType.PermissionTypeId
IF @PortalPermissionValue = 0BEGIN RAISERROR (60002, 16, 1) return -3END
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Apr 6, 2006
I am moving some code that was created in visual studio 2002 into Visual Web Developer 2005 express edition and am getting a warning on some of my code before compilation.
The warning is "Variable lSqlTransaction is used before it has been assigned a value. A null reference exception could result at runtime". I experienced no problems in vs2002.
The offending line is the rollback command within the exception. If I move it out of the exception it no longer flags the warning, if I move it after the throw statement it now longer flags the warning. Any help appreciated.
Heres the code
Public Shared Sub ExecuteNonQuery(ByVal lSQLCommand As SqlCommand)
Dim lSQLConnection As New SqlConnection(SQLConnString(enmSQLDB.enmSQLDB_TPSDB))
Dim lSQLTransaction As SqlTransaction
Try
'-----------------------------------------------------
'Try and open the database
'-----------------------------------------------------
lSQLConnection.Open()
'-----------------------------------------------------
'Create a transaction
'-----------------------------------------------------
lSQLTransaction = lSQLConnection.BeginTransaction
'-----------------------------------------------------
'Assign the connection and transaction to our object
'-----------------------------------------------------
lSQLCommand.Connection = lSQLConnection
lSQLCommand.Transaction = lSQLTransaction
'-----------------------------------------------------
'Execute the stored proc
'-----------------------------------------------------
lSQLCommand.ExecuteNonQuery()
'-----------------------------------------------------
'Use the transaction to commit the changes
'-----------------------------------------------------
lSQLTransaction.Commit()
Catch ex As Exception
'-----------------------------------------------------
'If any errors have been thrown then roll back without
'commiting....
'-----------------------------------------------------
lSQLTransaction.Rollback()
Throw New Exception("An error has occured whilst trying to update the database. " & _
"Your changes have not been saved.", ex)
Finally
If lSQLConnection.State = ConnectionState.Open Then
lSQLConnection.Close()
End If
End Try
End Sub
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Nov 20, 1998
DECLARE @A INT, @B INT,@C INT
SELECT @A=2,@B=3
SELECT @C=@A*@B
SELECT @C
BEGIN TRANSACTION A
SELECT @A
SELECT @B
SELECT @C
END TRANSACTION A
THIS CODE PROCDUE the following errors
Msg 156, Level 15, State 1
Incorrect syntax near the keyword 'END'.
Can anyone help me telling me what I am doing wrong ?
thanks
Ali
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