Errors Opening ADO Connections Using COM+ Component
Mar 19, 2008
Hello,
We have a strange problem occurring in an environment at a remote client that we're looking into. I was wondering if anybody else has experienced something similar.
We have a COM+ transactional component sitting on a machine that connects to a SQL server machine in the same room (ie no firewall between the two as far as I know, but I'll double check that to make sure).
This component was written in Delphi and uses ADO (sqloledb provider) to connect to the SQL Server. This works 99% of the time. However, there are times where we get the following error when trying to open connection (using the Connection ADO interface):
[DBNETLIB][ConnectionRead (WrapperRead()).]General network error. Check your network documentation
or this:
Connection failure
The error codes associated with these were found in oledb.pas :(-2147467259) $8004D01C and (-2147168228) $80004005
When this happens, it seems to last a few seconds (usually around 10) and then everything comes back to normal. I'm just wondering what could make this happen when the SQL Server seems to be responsive when we try to connect to it using other means. The SQL machine runs Win2k3 sp2 for testing purposes.
Since we were not able to reproduce it yet, I wrote a little application trying to connect to a sql server when it is set on pause. When I run it inside a COM+ transaction, I get the same errors as above right away, the third time I'll get an error telling me that SQL is in pause state, If I run the exact same code but inside a simple vbs application (ie no COM+ transaction), I only get the pause error message sometimes after a few more seconds, and none of the other errors above. Could it be that the COM+ transaction is trying to do other things and these fail so it returns another error? If so, how come after a bit I get the proper message?
Anyways, I'm pretty lost as to why this is happening and how we can try to debug it since we have not been able to reproduce it yet. If anybody has any clues, please let me know.
When the databse file's "copy to output" property is set to "copy always" my data is not saved and when I change it to "do not copy" it gives me the error "cannot attach the database file", and does not open my connection. I dont know what to do.....
I'm currently experiencing major problems with SSIS when opening and editing large .DTSX package files that contain Exec DTS 2000 Tasks which have the package data loaded internally. I have no issues if I point the task to a .DTS file, or to an actual DTS package on a SQL 2000 server - but if I load the package internally then once the underlying .DTSX file gets over around 17MB or so in size (which doesnt take long making a few edits to even fairly simple packages now and then), I start to experience major issues with VS/BIDS 2005 crashing randomly when I try to perform any action with the package (open, save etc). Things like OutOfMemory exception errors, followed by the properties of Exec DTS 2000 task being deleted, and also sometimes accompanied by messages about the application not being installed properly.
Again its ONLY when the underlying .DTSX file reaches a certain size limit, and only when I've got an Exec DTS 2000 task with the package loaded internally. I've replicated the issue using several different package files on several different machines (even on servers with lots of memory, fwiw).
Can anyone out there help me with this? SSIS - namely SSIS Exec DTS 2000 package tasks - are our lifeblood at my company and this trend of random and serious crashing on large package files is very disturbing to say the least.
1.After creating pacakages what i am concerned about is that when i move then to different locations do they work just the same as the had been.
2.About the mapping with in the components like lookups,and the variable with in conditional split or etc....do they get disturbed with any change in the location of the textfiles or anything of this kind of location change.
3.Is is adviceable transforming 5 to 6 text file with in one package in parallel
How come when i compile the package and try and run the package outside of the Developement enviroment(Visual studio) it complains about all my ssis scrip tasks. It brings up an error saying, it can not run under this edition of Integration services. It requires a higher level.
Is there another type of ssis that i do not know about, can you supply me a URL to help solve this problem
Within a data flow I have a script component that I want to perform some data calls from. I want to execute SQL commands to connections already defined in the package's connection manager.
Is there a way to set my script's connection variable to the connection manager connection? Or, can I use the connection manager connections directly from within the script?
I have a page that I have 3 connections. I've made sure that each of these are closed when they are not being used and opened just right before being used. I keep getting the error "There is already an open DataReader associated with this Command which must be closed first." This error might show up as being produced by a dataadapter or sqldatareader...I have many. I've even tried to make separate connections as some have mentioned for each...leaving me with 15+ connections. I have added "MultipleActiveResultSets=True" to the connection strings as some have mentioned. I just don't know where to go from here... Is it possible that the problem lies in multiple instances of this page being opened? Also, the data refreshes every 15 seconds. I really need this to work, but I have no clue on how to fix this problem. The error is easy to reproduce by opening up multiple instances, but some of the times is doesn't give an error at all?!
I have VS 2013 installed in my machine with SQL server 2012 ,I have installed Microsoft data tools for VS 2013,In the integration service project  i used script component when i try to pen the script task its not opening VSTA projects ,its simple ideally without any action.I am facing this issue for past 2 months i tried fixing this problem but no use.
The script  task editor has "Access VSTA to write script using VS 2012".So i installed VSTA tools for 2012 and 2013 but no issue.
But the script component works for VS 2010.I have installed Microsoft Visual Studio tools for VS 2012,VS2012 AND VS 2013.
Hi guys, I got these errors when writing a scripting component. Anyone encounteer these errors before?
Warning 1 The dependency 'EnvDTE' could not be found. Warning 2 The dependency 'Microsoft.SqlServer.VSAHosting' could not be found. Warning 3 The dependency 'Microsoft.SqlServer.DtsMsg' could not be found. Warning 4 The dependency 'Microsoft.SqlServer.VSAHostingDT' could not be found.
TITLE: Microsoft Visual Studio ------------------------------
Cannot show Visual Studio for Applications editor.
For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft%u00ae+Visual+Studio%u00ae+2005&ProdVer=8.0.50727.42&EvtSrc=Microsoft.DataTransformationServices.DataFlowUI.SR&EvtID=CouldNotShowVsaIDE&LinkId=20476
For some reason, when I try to delete old DB connections from the connection manager, it causes compilation errors because it is not removing the references from the meta data. I get Object ID errors where it is still trying to find the connection after it has been deleted. I have tried going to the code behind and searching then deleting the invalid reference, but that still does not work. I have a connection for 2 totally different databases that are no longer being used in the SSIS package and I would like to get rid of them.
Problem 1: Upon starting SQL Server Express I get the following error:
"An unhandled exception has occurred in a component in your application....Cannot create a stable subkey under a volatile parent." Clicking OK lets the Server continue and I can use it quasi-normally.
Problem 2: Also, when I try to generate a diagram, I get a message that states
"Database diagram support objects cannot be installed because this database does not have a valid owner. To continue, first use the Files page of the Database Properties dialog box or the ALTER AUTHORIZATION statement to set the database owner to a valid login, then add the database diagram support objects."
But, the database HAS an owner, and resetting the owner (using the Files...) to other users has no effect.
Problem 3: I tried to change the name of a database, and it refused to do so. Except that now all objects under the database name (it is the same old name) have disappeared. Is there a magic folder somewhere that contains all of the tables, etc. that were 'banished' from the server?
Is there a way to detach the databases from Express and reattach them to the SQL Server 2000 I am also running? Last time I tried the 'detach' worked but all the objects were wiped out by the 'attach'. Handy feature.
I have a package that has a data lfow task. this task imports data from a db2 database (using the IBM Ole DB provider fro db2) and adds it to sql server database table. This package was created on the server. then though version control (using TFS source control) I check out the package on my local machine. and when I open the package I get the foll 3 errors.
Error 1 Validation error. Import Account Num from BMGP_BDR: DTS.Pipeline: The component metadata for "component "DataReader Source" (1113)" could not be upgraded to the newer version of the component. The PerformUpgrade method failed.
Error 2 Error loading BMAG Download Xref Tables - bmag.dtsx: Microsoft.SqlServer.Dts.Pipeline.ComponentVersionMismatchException: The version of component "DataReader Source" (1113) is not compatible with this version of the DataFlow. [[The version or pipeline version or both for the specified component is higher than the current version. This package was probably created on a new version of DTS or the component than is installed on the current PC.]] at Microsoft.SqlServer.Dts.Pipeline.ManagedComponentHost.HostCheckAndPerformUpgrade(IDTSManagedComponentWrapper90 wrapper, Int32 lPipelineVersion)
Error 3 Error loading BMAG Download Xref Tables - bmag.dtsx: The component metadata for "component "DataReader Source" (1113)" could not be upgraded to the newer version of the component. The PerformUpgrade method failed.
I have a package which reads an Access file from a folder. My connection manager to this file is .NET providers for OledbMicrosoft Jet 4.0 OLE DB Provider.
Package works from my computer. But when I execute it on the server as a SQL Agent job, I get
The component metadata for "component "DataReader Source" (1) could not be upgraded to the newer version of the component. The PerformUpgrade method failed.
I copied the mdb file to a folder on the server which my packages have no problem reading data from.
My packages run under the same domain account as defined in proxies.
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?
In a Data Flow, I have the necessity to use a SSIS variable of type €œObject€? inside Script Component and assign to it the content of 'n' variables of string type. On exiting from the script the variable of type object should contain something like in the following lines: AAAAAAAAAAAAAAAAAAAAAAAAAAAAA BBBBBBBBBBBBBBBBBBBBBBBBBBBBB CCCCCCCCCCCCCCCCCCCCCCCCCCCCC DDDDDDDDDDDDDDDDDDDDDDDDDDDDD €¦€¦€¦€¦€¦€¦€¦. €¦€¦€¦€¦€¦€¦€¦. On exiting from the data flow I will use the variable of type Object in a Script Task, by reading each element in a cyclic fashion. Is there anyone who have experienced something like this? Could anyone provide any example of that? Thanks in advance!
Hi all I'm into a project which uses a lot of views for joining 2 or more tables. Using the MERGE component in SSIS will be a huge effort coz it only has 2 inputs and I gotta SORT the input too. Isnt it possible to have a VIEW like component that joins more than 2 tables and DOESNT need sorting?? (I've thought about creating views in database engine but it breaks my data floe in SSIS and is'nt a practical solution)
I am writing a custom dataflow transformation component and I need to get the name of the preceeding component.
I have been trying to find a way to get a reference to the Package object, MainPipe object or IDTSPath90 object (connecting to the IDTSInput90 of my component) from my component because I think from there I can get to the information I want.
No idea where this bug crept in from. Have been using SSIS for 1.5 years now without hitting this problem.
I had a script component opening an XML document and parsing it using XPATH. I added some code that uses StreamReader / Streamwriter (closing one stream before starting the other). The code works without issue in my C# app.
And it ran without issue 2-3 times in SSIS. Then suddenly after running my package again, the script component says it completes successfully, yet nothing happens. I set a breakpoint on the first line of code - it never hits it. I add a msgbox as the first line of code - and it never displays.
I then close my package / exit out of ssis ... and then re-open it. When i open my script component, all of my code is GONE. All references that I added are gone.
I tried adding the streamreader/writer process to a dll I created from my c# app ... and added the DLL to the package -- same result.
I can reproduce this on 2 different computers.
Anyone experience this problem ? Any idea how to stop it ? Or debug it ?
Here is a slimmed down code sample of what causes the error :
Public Class ScriptMain Public Sub Main() Try Dim xmlDoc As New XmlDocument xmlDoc.Load("c:ulkasync_86281519_20070628045850225_4.xml") MsgBox("xmlLoaded") --this doesn't display once the package starts "acting up" Catch ex As Exception MsgBox(ex.Message) UpdateXML("c:ulkasync_86281519_20070628045850225_4.xml", ex.Message) End Try Dts.TaskResult = Dts.Results.Success End Sub Private Sub UpdateXML(ByVal fileName As String, ByVal message As String) Try Dim invalidChar As String = message.Trim().Substring(message.Trim().IndexOf("0x"), 4) Dim rd As StreamReader = New StreamReader(fileName) Dim xml As String = rd.ReadToEnd() Xml = Xml.Replace(invalidChar, String.Empty) xml = xml.Replace("", String.Empty) xml = xml.Replace("<![CDATA[<![CDATA[", "<![CDATA[") xml = xml.Replace("]]>]]>", "]]>") MsgBox("replaced") rd.Close() Dim wr As StreamWriter = New StreamWriter(fileName) wr.Write(xml) wr.Close() Dim xdoc As XmlDocument = New XmlDocument() xdoc.Load(fileName) Catch ex As Exception UpdateXML(fileName, ex.Message) End Try End Sub End Class
I recently updated the datatype of a sproc parameter from bit to tinyint. When I executed the sproc with the updated parameters the sproc appeared to succeed and returned "1 row(s) affected" in the console. However, the update triggered by the sproc did not actually work.
The table column was a bit which only allows 0 or 1 and the sproc was passing a value of 2 so the table was rejecting this value. However, the sproc did not return an error and appeared to return success. So is there a way to configure the database or sproc to return an error message when this type of error occurs?
Hi there, Here we have got a asp.net application that was developed when database was sitting on SQL server 6.5. Now client has moved all of their databases to SQL server 2000. When the database was on 6.5 the previous development team has used oledb connections all over. As the databases have been moved to SQL server 2000 now i am in process of changing the database connection part. As part of the process i have a login authorization code. Private Function Authenticate(ByVal username As String, ByVal password As String, ByRef results As NorisSetupLib.AuthorizationResult) As Boolean Dim conn As IDbConnection = GetConnection() Try Dim cmd As IDbCommand = conn.CreateCommand() Dim sql As String = "EDSConfirmUpdate" '"EDSConfirmUpdate""PswdConfirmation" 'Dim cmd As SqlCommand = New SqlCommand("sql", conn)
cmd.CommandText = sql cmd.CommandType = CommandType.StoredProcedure NorisHelpers.DBHelpers.AddParam(cmd, "@logon", username) NorisHelpers.DBHelpers.AddParam(cmd, "@password", password) conn.Open() 'Get string for return values Dim ReturnValue As String = cmd.ExecuteScalar.ToString 'Split string into array Dim Values() As String = ReturnValue.Split(";~".ToCharArray) 'If the return code is CONTINUE, all is well. Otherwise, collect the 'reason why the result failed and let the user know If Values(0) = "CONTINUE" Then Return True Else results.Result = Values(0) 'Make sure there is a message being returned If Values.Length > 1 Then results.Message = Values(2) End If Return False End If Catch ex As Exception Throw ex Finally If (Not conn Is Nothing AndAlso conn.State = ConnectionState.Open) Then conn.Close() End If End Try End Function ''' ----------------------------------------------------------------------------- ''' <summary> ''' Getting the Connection from the config file ''' </summary> ''' <returns>A connection object</returns> ''' <remarks> ''' This is the same for all of the data classes. ''' Reads a specific connection string from the web.config file for the service, creates a connection object and returns it as an IDbConnection. ''' </remarks> ''' ----------------------------------------------------------------------------- Private Function GetConnection() As IDbConnection 'Dim conn As IDbConnection = New System.Data.OleDb.OleDbConnection Dim conn As IDbConnection = New System.Data.SqlClient.SqlConnection conn.ConnectionString = NorisHelpers.DBHelpers.GetConnectionString(NorisHelpers.DBHelpers.COMMON) Return conn End Function in the above GetConnection() method i have commented out the .net dataprovider for oledb and changed it to .net dataprovider for SQLconnection. this function works fine. But in the authenticate method above at the line Dim ReturnValue As String = cmd.ExecuteScalar.ToString
for some reason its throwing the below error. Run-time exception thrown : System.Data.SqlClient.SqlException - @password is not a parameter for procedure EDSConfirmUpdate. If i comment out the Dim conn As IDbConnection = New System.Data.SqlClient.SqlConnection and uncomment the .net oledb provider, Dim conn As IDbConnection = New System.Data.OleDb.OleDbConnection then it works fine. I also have changed the webconfig file as below. <!--<add key="Common" value='User ID=**secret**;pwd=**secret**;Data Source="ESMALLDB2K";Initial Catalog=cj_common;Auto Translate=True;Persist Security Info=False;Provider="SQLOLEDB.1";' />--> <add key="Common" value='User ID=**secret**;pwd=**secret**;Data Source="ESMALLDB2K";Initial Catalog=cj_common;' />
I have a parent package that calls child packages inside a For Each container. When I debug/run the parent package (from VS), I get the following error message: Warning: The Execution method succeeded, but the number of errors raised (3) reached the maximum allowed (1); resulting in failure. This occurs when the number of errors reaches the number specified in MaximumErrorCount. Change the MaximumErrorCount or fix the errors.
It appears to be failing while executing the child package. However, the logs (via the "progress" tab) for both the parent package and the child package show no errors other than the one listed above (and that shows in the parent package log). The child package appears to validate completely without error (all components are green and no error messages in the log). I turned on SSIS logging to a text file and see nothing in there either.
If I bump up the MaximumErrorCount in the parent package and in the Execute Package Task that calls the child package to 4 (to go one above the error count indicated in the message above), the whole thing executes sucessfully. I don't want to leave the Max Error Count set like this. Is there something I am missing? For example are there errors that do not get logged by default? I get some warnings, do a certain number of warnings equal an error?
Starwin writes "when i execute DBCC CHECKDB, DBCC CHECKCATALOG I reveived the following error. how to solve it?
Server: Msg 8909, Level 16, State 1, Line 1 Table error: Object ID -2093955965, index ID 711, page ID (3:2530). The PageId in the page header = (34443:343146507). . . . . . . . .
CHECKDB found 0 allocation errors and 1 consistency errors in table '(Object ID -1635188736)' (object ID -1635188736). CHECKDB found 0 allocation errors and 1 consistency errors in table '(Object ID -1600811521)' (object ID -1600811521).
. . . . . . . .
Server: Msg 8909, Level 16, State 1, Line 1 Table error: Object ID -8748568, index ID 50307, page ID (3:2497). The PageId in the page header = (26707:762626875). Server: Msg 8909, Level 16, State 1, Line 1 Table error: Object ID -7615284, index ID 35836, page ID (3:2534). The PageId in the page heade"
Just a quick question about connection management. My application willnever need more than 1 or 2 connections about at any given time. Also, I donot expect many users to be connected at any given time. For efficiency, Iwould like to keep connections alive throughout the lifetime of the objectsrequiring them, rather than opening a new connection, executing code andthen closing it again. What is the most efficient way of doing this?Should I perform the open/close or just one open when I create the objectand a close when I dispose of it?
I’m trying to follow the article http://aspnet.4guysfromrolla.com/articles/031506-1.aspx. It gives a sample to download at the bottom which I did. I’m trying to take a look at the Stored Proc that were created in the PagingData.mdf. The only thing included in the App_Data folder is PagingData.mdf file. How can I open the DB or attach it to my SQL2005 server? There is no .ldf file included in the sample so the attaching is failing.
I used to use rdo in VB6 and now I'm trying to figure out how to use the SqlDataReader class in VB.NET. I want to use an ODBC data source to specify the connection info. I used to give the rdoConnection object a connect string that looked something like this:"DSN=[data source name];UID=[sql server user];PWD=[pwd]"I don't understand the connect string given in all the examples I've found (nor does it seem to work on my system...) mySqlConnection = New SqlConnection("server=(local)VSdotNET;Trusted_Connection=yes;database=northwind")Does anyone have any ideas? I'm open to explanations as well as solutions :)Thanks,jdm
I got a .dts package via email. But I am not able to open it in my sql server. Could some one pls help me know, how to open .dts packeges in the designer.
All I want to do is open an .mdf file. So I have downloaded and installed SQL Server 2005 Express Edition. I have searched HELP but I see nothing simple. How do I add a file to this server so that I can read the file in Access? Thank you very much for any help you can give. David Thomas
Hi, I have a client who has a current website based on an MS SQL database. I am building a new website that will be in MySQL.
I have never used MSSQL before and the only information that i have been sent by the old web designer is a .bak file (which is the latest back-up of the MS SQL info) and the user name and password for the current on-line databases.
I dont know how to open this .bak file, ideally i would like to get it into MS excel or MS access. I have downloaded SQL Server Management Studio Express and SQL Server Configuration Manager but i dont know what to do next (and am really confused!)
Can anyone advise me of the steps that i need to take to get the data out of the .bak file?
Hello Guys, One of the fields in my report is a web address (i.e. http://www.yahoo.com). Navigation property for this field is "Jump to URL". Users will access the report with a browser, using a "sharepoint-like" application. Default behavior of "Jump to URL" seems to be to open the link in the same window (or tab in IE7). Is there a way to force the link to be open in the new window?? Please let me know if you have any suggestions. Thanks!!
Im using Sql server 2000. I wanted to know if its possible to open a cursor using an sp instead of an sqlstatement?
Also I know that cursors cant be opened for more than one result sets. This question is based on the assumption that the SP will return only one result set.
If possible please let me know the syntax/reference link.
