Getting Error In Registering The SQLCLR Procedure...
Aug 1, 2007
hi, Derek Comingore
My self Jitendra Nayi....
I am trying to generate a SQL CLR stored procedure and i have done it too. Now the next step is to convert that *.dll file in to assembly. I am getting erro that. My server Database is on the LAN, not on my PC.
Here is the code which i have tried to register an assembly...
/*
CREATE ASSEMBLY MyAssembly FROM 'C:Documents and SettingsAdministrator.ORC80My DocumentsVisual Studio 2005ProjectsMyDB1MyDB1inDebugMyDB1.dll'
WITH PERMISSION_SET=SAFE
GO
*/
and here is the error that i am getting...
/*
Msg 6585, Level 16, State 1, Line 1
Could not impersonate the client during assembly file operation.
*/
Please help me .I am stuck at here.
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Jul 18, 2007
Hello,
I have a sqlclr stored procedure that works well if started via execute in SSMS. (The stored procedures makes a SSRS web service call.) When I install a trigger on a database table to execute the stored procedure
create trigger NewWdsStatsEntry on dbo.WDSSTATS after insert
as execute UpdateReportExecutionSnapshot N'http://localhost/ReportServer/reportservice2005.asmx', N'/Report1';
go
and add something to the table, I get the following error:
Msg 6522, Level 16, State 1, Procedure UpdateReportExecutionSnapshot, Line 0
A .NET Framework error occurred during execution of user-defined routine or aggregate "UpdateReportExecutionSnapshot":
System.Net.WebException: The request was aborted: The operation has timed out.
System.Net.WebException:
at System.Web.Services.Protocols.WebClientProtocol.GetWebResponse(WebRequest request)
at System.Web.Services.Protocols.HttpWebClientProtocol.GetWebResponse(WebRequest request)
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
at UserProcedures.ReportService2005.ReportingService2005.UpdateReportExecutionSnapshot(String Report)
at StoredProcedures.UpdateReportExecutionSnapshot(String url, String reportPath)
.
The statement has been terminated.
The insert times out after 100 seconds and no row has been added to the table, but the web service call actually created a new report! Any idea why the trigger can't execute the stored procedure?
Thanks!
werner
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Jan 4, 2006
Running SQL Dev Edition on Win2K3 Enterprise Edition. I get the following error.
Msg 6522, Level 16, State 2, Line 2
A .NET Framework error occurred during execution of user defined routine or aggregate 'AddressCorrect':
System.DllNotFoundException: Unable to load DLL 'D:CorrectA.dll': Not enough storage is available to process
this command. (Exception from HRESULT: 0x80070008)
System.DllNotFoundException:
at UserDefinedFunctions.CorrectA(String query, String sentlen, StringBuilder errcode, StringBuilder FirmName, StringBuilder urbanization, StringBuilder Dline1, StringBuilder Dline2, StringBuilder LastLine, StringBuilder Stringaddress, StringBuilder DPC, StringBuilder Checkdigit, StringBuilder cityname, StringBuilder stcode, StringBuilder zip, StringBuilder addon, StringBuilder croute, StringBuilder LACS, StringBuilder LOTsequence, StringBuilder LOTcode, StringBuilder PMB, StringBuilder results, StringBuilder strnum, StringBuilder secname, StringBuilder secnum, StringBuilder countyname, StringBuilder countynum)
at UserDefinedFunctions.AddressCorrect(String inputAddress)
Box has 2GB Ram, with no other processes runing, cant understand why it says out of memory.
Appreciate any insights.
Thanks,
Saptagiri
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Mar 5, 2007
have done several SQL_CLR stored procs.
on one of them, get an intermittent error
Msg 6532, Level 16, State 49, Procedure clrsp_RetailPriceOnDate, Line 0
.NET Framework execution was aborted by escalation policy because of out of memory.
System.Threading.ThreadAbortException: Thread was being aborted.
System.Threading.ThreadAbortException:
at Data_SQLCLR.StoredProcedures.clrsp_RetailPriceOnDate(SqlInt32 iSQLsysid_Individual, SqlInt32 iSQLStore, SqlInt32 iSQLGroup, DateTime dtPriceDate, SqlInt32 iSQLInclude)
Msg 6532, Level 16, State 49, Procedure clrsp_RetailPriceOnDate, Line 0
.NET Framework execution was aborted by escalation policy because of out of memory.
Problem is that it is intermittent - runs fine several times(takes c 30 secs to run, returns 15k records), then fails, then runs ok, fails/runs/runs/fails etc... etc...
any ideas on how to track / catch this one
thx
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Mar 22, 2006
TITLE: New Server Registration
------------------------------
Testing the registered server failed. Verify the server name, login credentials, and database, and then click Test again.
------------------------------
ADDITIONAL INFORMATION:
An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 53)
When I try to regiter a sql server, I take this error message. I am using Sql Server 2005. What is the problem,can you help me?
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Nov 13, 2007
Good evening everyone,
I'm following the steps of the tutorial on how to construct a managed data mining plugin in C#.
Once created the Metadata, Algorithm and Navigator classes I tried to register it on Analisys Service by running the XMLA template written on the tutorial but I got the following error:
Unable to retrieve a list of supported data mining algorithms. Make
sure you are connected to the correct Analysis Services server
instance and the Analysis Services server named localhost is running
and configured properly. You can continue with a default list of data
mining algorithms
The GUID in the XMLA is correct as so the service name. The SQL Server engine runs fine.
I noticed that when I run this XMLA, the file msmdsrv.ini is modified, so in DataMining/Algorithms session a new entry is correctly created, enabled and the GUID is also set correct.
I also tried to ignore the XMLA setting up msmdsrv.ini manually but it also didn't work.
The build process is fine, both DMPluginWrapper and the Shell are registered by gacutil and I restarted (also try to stop and start) the server.
Any ideas will be very appreciated.
Thanks,
-Renan
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May 16, 2006
Help.
When I try to CREATE/Register a third party assembly (dtsearchNetApi2) within SQL server I am getting an error (see below). I have the source code for dtsearchNetApi2 but it is in C++ and I would like to avoid having to extend/modify it if that is avoidable. I have written a 'wrapper' class in C# but sine it references dtsearchNetApi2.dll I can't register that dll either.
CREATE ASSEMBLY DBSEARCHNETAPI
FROM 'C:TempdtsearchNetApi2.dll'
WITH PERMISSION_SET = UNSAFE
Msg 6218, Level 16, State 3, Line 2
CREATE ASSEMBLY for assembly 'dtSearchNetApi2' failed because assembly 'dtSearchNetApi2' failed verification. Check if the referenced assemblies are up-to-date and trusted (for external_access or unsafe) to execute in the database. CLR Verifier error messages if any will follow this message
dtsearchNetApi2 has references to unmanaged code. The dtSearchNetApi2.dll is a .NET 2.0 wrapper around C++ objects exported in dten600.dll. It is implemented in MSVC++ with Managed Extensions is implemented in C++/CLI 2.0.
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Jan 23, 2008
hello,everyone,I also met a problem.
I stoped the SQL Server Analysis Services first, and registered the GAC successfully,
then modified the msmdsrv.ini manually.In fact,I found the format of my msmdsrv.ini is diffirent from the one mentioned in the tutorial,it just like below:
<DataMining>
...
<Algorithms>
.
.
.
<MyCompany_Managed_Plugin_Algorithm>
<Enabled>1</Enabled>
</MyCompany_Managed_Plugin_Algorithm>
.
</Algorithms>
<Services>
...
<MyCompany_Managed_Plugin_Algorithm>
<ProgID>44503EAB-570E-4b25-A9F4-043949A7D78E</ProgID>
</MyCompany_Managed_Plugin_Algorithm>
...
</Services>
when i restarted the the AS,
some error information displayed in event viewer,
" can't load MyCompany_Mamaged_Plugin_Algorithm data mining Algorithm provider(ProgID,
can't create Algorithm Provider program for MyCompany_Managed_Plugin_Algorithm,
ProgID does not exist in the server configuration file"
I am confused by it and have not any idea to solve it.
some one can give tips?
thanks.
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Feb 6, 2007
Hi,
Using the Microsoft Patterns and Practices "Object Builder" (Dependency Injection/Builder library), I wrote an SQL CLR Stored Procedure (using VS 2005 Professional).
All compiles and deploys ok (to SQL Server 2005 Express).
However, at run-time, I get the following error upon a "BuilderContext" object's instantiation: {"Attempted to perform an operation that was forbidden by the CLR host."}
Thoughts on how to get ObjectBuilder working in the SQLCLR?
Thanks!
Andy
(posted below is the sample code...with the run-time exception occuring on the ...BuilderContext cxt = new ... call)
Microsoft.Practices.ObjectBuilder.BuilderStrategyChain chain =
new Microsoft.Practices.ObjectBuilder.BuilderStrategyChain();
chain.Add(new Microsoft.Practices.ObjectBuilder.CreationStrategy());
Microsoft.Practices.ObjectBuilder.Locator locator1 =
new Microsoft.Practices.ObjectBuilder.Locator(null);
// Get error when new'ing BuilderContext: "Attempted to perform an operation that was forbidden by the CLR host."
Microsoft.Practices.ObjectBuilder.BuilderContext cxt =
new Microsoft.Practices.ObjectBuilder.BuilderContext(chain, locator1, null);
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Apr 20, 2007
I created a CLR function based on following VB code:
Imports Microsoft.SqlServer.Server
Public Partial Class SqlClrVB
<Microsoft.SqlServer.Server.SqlFunction()> _
Public Shared Function GetTotalPhysicalMemory() As Integer
GetTotalPhysicalMemory = My.Computer.Info.TotalPhysicalMemory
End Function
End Class
The VB code was complied into a DLL called totalmem.dll and call following TSQL to map it into a SQL function:
create assembly totalmem from '!WORKINGDIR! otalmem.dll'
WITH PERMISSION_SET=UNSAFE
go
create function fnGetTotalMem()
returns int
as external name totalmem.SqlClrVB.GetTotalPhysicalMemory
go
When I call this function, it returned following error:
select dbo.fnGetTotalMem()
Msg 6522, Level 16, State 2, Line 0
A .NET Framework error occurred during execution of user defined routine or aggregate 'fnGetTotalMem':
System.IO.FileNotFoundException: Could not load file or assembly 'System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
System.IO.FileNotFoundException:
at Microsoft.VisualBasic.MyServices.Internal.ContextValue`1.get_Value()
at My.MyProject.ThreadSafeObjectProvider`1.get_GetInstance()
at SqlClrVB.GetTotalPhysicalMemory()
.
Anyone knows why I'm hitting this error? I didn't reference any System.Web interface why it needs to load System.Web assembly? The same code runs OK if I compile it as a separate VB application out side of SQL Server 2005.
Thanks much,
Zhiqiang
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May 1, 2008
We have written a test CRL stored procedure to test replacing one of our complex stored procedures but can€™t get it deployed to our SQL server that hosts a mirrored configuration of our production database (very locked down). It works fine on our development instances (not very locked down). It only references the default assemblies that were added when we created the project. All it does is use Context Connection=true to get data, loops though some records and returns the data using SQLContext. CLR is enabled on SQL server, the assembly is strongly signed, and we tried deploy using the binary string with the SAFE setting.
CREATE ASSEMBLY for assembly 'SQLCLRTest2' failed because assembly 'SQLCLRTest2' failed verification. Check if the referenced assemblies are up-to-date and trusted (for external_access or unsafe) to execute in the database. CLR Verifier error messages if any will follow this message
[ : SQLCLRTest2.StoredProcedures::GetLift][mdToken=0x600001e] Type load failed.
[token 0x02000008] Type load failed.
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Aug 9, 2006
Is anyone here aware of any explicit/definite differences between running sqlclr on 32-bit and 64-bit.
Note: These must be documented, well defined differences.
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May 9, 2008
I'm having a problem executing a SQLCLR function: this function
calls a web services that processes a query to a data base and
returns a table to be used in a stored procedure. In a low
concurrency scenario (not to many clients connected), the function
returns correctly, however when the concurrency level is increased
we have a SQLCLR command execution problem (all the SQLCLR
processes hangs), making the server unavailable to all web services
processes.
At first we thought the problem could be the SQLCLR, since the web
services is 100% available, all the time. We monitored to come to
this conclusion. Do you know of some SQLCLR bug?
Could someone help me with this? I'm in a difficult situation with
my client, considering that we defended the MS SQLServer technology
and now it's not working properly.
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May 15, 2006
I'll keep trying new threads here... sooner or later, I'm sure an expert Microsoft CLR employee will gladly lend a helping hand!
The pieces:
1. SQL 2005, MS Windows Server 2003, Standard Edition, SP 1
2. .NET 2005/C#
3. Instance of SQL 2005 running locally.
Trigger on local SQL2005 DB table INSERT calls 2 CLR Functions:
1. Retrieve data from SQL2005 DB table and populate local DBF through OLEDB
2. Call external 16-bit application (written in Clipper) that iterates through local DBF records (added from step 1 above) and populates DBF on domain resource.
Step 2 detail:
External 16-bit application is called by CreateProcessAsUser after impersonating token.
THIS IS SUCCESSFUL - IF: I populate SQL2005 DB table using TSQL insert statement. The trigger executes, Step 1 and Step 2 execute perfectly!
THIS IS UNSUCCESSFUL - IF: The SQL2005 DB table is populated by synchronizing SQL Mobile Server database from a SQL Mobile Edition 2005 PDA emulation. The trigger executes. Step 1 executes perfectly. Step 2 executes without exceptions. HOWEVER, the 16-bit application does not execute! Remember, no exceptions. In fact, the result variable returns true from function below:
result = ProcessUtility.CreateProcessAsUser(
hDupedToken,
null,
@"C:MobileDBMobile.exe",
ref sa, ref sa,
false, 0, IntPtr.Zero,
@"C:MobileDB", ref si, ref pi
);
Also, if I Right-click on the Step 2 function in the Server Explorer and click "Execute", it works perfectly. Domain DBF is updated successfully.
So, in short CLR "CreateProcessAsUser" is not doing it's job when the trigger is fired after SQL 2005 DB is populated via replication/sychronization. I would appreciate a response... Thx!
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Jan 31, 2006
Hi,
My .NET SQL UDF needs do very complex computation on every call regardless on user input. I would be very happy if I could cache this computed data somewhere in SQL Server memory. And then I should not need to recompute this complex information on every UDF call. Is it possible to cache something inside SQL Server from CLR ?
Thanks.
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Apr 8, 2008
I'm personally in favor of using the SQL CLR where appropriate, although I'm wondering what the negative consequences of enabling SQL CLR might be? Its disabled by default within SQL Server 2005 and most likely 2008, so what was the reason behind this ... beyond the fear of the DBA enabling something he might not himself fully understand.
Thanks,
Doug Holland
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May 11, 2006
By using impersonation I am able to push data to network path / old fashioned DBF's. Of course, I must use unsafe. I am unable, however to successfully run a "cmd.exe" process(), even if I populate the Username, Domain and password (with securestring). It authenticates correctly (checked by giving wrong password or bad username). But when it runs (even just a "cmd.exe"), I get an access is denied error...
StreamWriter sw = File.CreateText("C:\Error.txt");
WindowsIdentity clientId = null;
WindowsImpersonationContext impersonatedUser = null;
clientId = SqlContext.WindowsIdentity;
impersonatedUser = clientId.Impersonate();
System.Security.SecureString password = new System.Security.SecureString();
foreach (char c in "secret")
password.AppendChar(c);
Process p = new Process();
ProcessStartInfo si = new ProcessStartInfo("cmd.exe");
si.UserName = "MyName";
si.Password = password;
si.Domain = "MySecretDomain";
si.UseShellExecute = false;
try
{
p.StartInfo = si;
p.Start();
}
catch (Exception ex)
{
//handle the exception here (This exception handler will not handle the exception, but I get a
//Window popup (While executing my CLR!!!)
}
finally
{
sw.Close();
}
The message popup says: The application failed to initialize poperly (0xc0000142). Click on OK to terminate the application. I'm kind of at a loss...
I'm using a Windows 2003 server box with the latest SQL Server 2005, .NET 2.0/2005. Let me know if you need anything else.
Oh, just FYI - I am moving replicated data from SQL2005 server to a legacy app using DBF (FoxPro driver). I really need an external DOS app to process some data for the DOS application (Clipper).
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Oct 4, 2007
I am searching for a way of using SQLCLR to do Bulk Insert/Copy within SQL Server 2005.
I am not permit to use SQL command BULK INSERT with any of text based file csv, or xml etc.
I did tried to use SqlBulkCopy within SQLCLR but failed, the context connection was not allowed, I did also use normal connection string with sa & pwd but no luck.
I understand that I can move bulk insert to a service such as windows, web or WCF but it is not on the card at present.
Is there a way of doing this within CLR, size of bulk is fair about 2000+ rows.
If you have solution, sample or link would be appriciated.
Cheers
Punprom Kasemsant.
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Aug 27, 2007
Hi,
I have an SQLCLR assembly which is required to connect to a remote WCF service. In order to do this in a host such as IIS you would need to store all your WCF configuration data (endpoints, types etc) in the Web.config or App.config (in a windows forms app). This begs the question: Where do you store configuration data for SQLCLR assemblies?
The System.Configuration assembly is available in the SQLCLR, but this assumes a Web or App config files exists? Does SQL have its own config file that you can keep your settings in which is called when the assembly is running from within the SQL process?
If this is not possible, should I rather be storing configuration data in the database itself?
This particular example relates to WCF configuration but is relevant for assemblies using Enterprise Library which is also config driven.
Any help would be appreciated.
Chris
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Aug 3, 2006
Hi,
I have created a SQLCLR (database) using C#.. named SQLCLRtest
The Connection string is stored in SQLCLRtest.csproj file
here is code of csproj file
<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup>
<AssemblyOwner>
</AssemblyOwner>
</PropertyGroup>
<ProjectExtensions>
<VisualStudio>
<FlavorProperties GUID="{c252feb5-a946-4202-b1d4-9916a0590387}">
<DatabaseConnection Name="Data Source=DBserver;Initial Catalog=TestDB;Integrated Security=True" Provider="{91510608-8809-4020-8897-FBA057E22D54}" ConnectionString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
</FlavorProperties>
</VisualStudio>
</ProjectExtensions>
</Project>
Problem:
I have an sp which start an external process, It is working at my local machine but does not work at remote server.
FACTS:
Local machine has SQLExpress (SQL version) while remote machine has SQL Enterprise ..
SQL service is running under the System Account at both machines..
I have enabled the Sql server Service to interact with desptop, so that it can start a process in GUI mode.
I thin there is something in connectionstring which does not allow the application to connect to server with appropriate rights.
How I can chage this setting .. is it possible to write this info manually..
Please, comments
Thanks
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Sep 10, 2006
Just wondering which scenarios is suitable to use SQLCLR. Any kind of data access is not recommended I guess. Only things that cannot be easily done in TSQL should be done in SQLCLR but why? Can't those things be done in app layer itself? Scenarios recommended for SQL CLR:
- External data access like filesystem, registry etc
- Complex calculation
- Recursion without data access (this can be implemented with CTE for data access)
If data access with SQL CLR is not recommended why should CLR should be even used and logic reside in database layer.. it makes no sense to me. Any thoughts??
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Oct 5, 2006
Is there a limit to the number of connections that can be made to the SQLCLR? If so, what is that limit and is it adjustable?
Thanks!
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May 11, 2006
I have just begun to delve into the SQLCLR objects in SQL Server 2005. I have created a simple VB function as a SQLFunction. Here's the code:
Imports System
Imports Microsoft.SqlServer.Server
Partial Public Class UserDefinedFunctions
<Microsoft.SqlServer.Server.SqlFunction()> _
Public Shared Function FileDate(ByVal FilePath As String) As Date
Return FileDateTime(FilePath)
End Function
End Class
The function is run with this T-SQL:
declare @FileDate datetime
select @FileDate = dbo.FileDate('C:setup.bat)
select @FileDate
This works fine, but I had to set the Permission Level of the Visual Studio project to "Unsafe" rather than "External" in order to avoid the following error message:
A .NET Framework error occurred during execution of user defined routine or aggregate 'FileDate':
System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
Is there any way to avoid having to set the permission level to "Unsafe"? If not, what does "unsafe" mean in terms of overall system security? Is it acceptable to use on an internal LAN?
Thanks,
Ron
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Feb 21, 2006
Hi
I had DTS the Northwind sample database from SqlServer 2000 to 2005. It's went ok and no errors. Then, I created a SP named upGetCustomer, bascially it queries the Customers table and list some of it's fields and order by CustomerId,CustomerName, Country decrementally. SP is so simple and has no errors.
Then, I created a SqlServer project in VS2005 using C#. Add store procedure class as below,
using System;
using System.Data;
using System.Data.SqlClient;
using System.Data.SqlTypes;
using Microsoft.SqlServer.Server;
public partial class StoredProcedures
{
[Microsoft.SqlServer.Server.SqlProcedure]
public static void Customers(string customerid)
{
using (SqlConnection sqlConn =
new SqlConnection("context connection=true"))
{
sqlConn.Open();
SqlPipe sqlPipe = SqlContext.Pipe;
SqlParameter param = new SqlParameter("@custId", SqlDbType.VarChar, 5);
param.Value = customerid;
SqlCommand sqlCmd = new SqlCommand();
sqlCmd.CommandType = CommandType.StoredProcedure;
sqlCmd.CommandText = "upGetCustomer";
sqlCmd.Parameters.Add(param);
SqlDataReader rdr = sqlCmd.ExecuteReader();
SqlContext.Pipe.Send(rdr);
}
}
I had taken method of created SQLCLR from source in Microsoft website, but coding is mine, and hopes it is correct. I used SqlConnection string as 'context connection=true' which I still not quite sure what does it means, hopes it mean current connection I am using on my Windows authentication.
The project did compiled & deployed OK on the VS2005 side.
The problem is that when I tried to locate the assembly on the Sql Server 2005, but can't find it anywhere on Sql Server.
I did try complied and deloyed again, it keeps saying there is an error in deployment as customers assembly is already exist on the database. I then, tried to remove this assembly on the database using SQL script, drop assembly customers in the Northwind database but got error saying it does not exist. So where is it???
Please help...
Thank you
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May 4, 2006
I keep getting different answers from different people on regarding if you can or cannot kill the hosting sql server process with an unsafe assembly. Can you do this? If so could you please attach a sample demonstrating this?
Thanks,
Derek
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Jul 23, 2006
Throughout the course of this book and even before it I have come across conflicting information regarding how SQLCLR attempts to resolve system/CLR assembly references. For example, prior to my latest read thourgh April BOL 2005, I thought SQLCLR attempted to resolve these references implicity for you via the local machine's GAC. Yet here is what I found while trying to help another person in this forum yesterday in BOL...
Assembly Validation
SQL Server performs checks on the assembly binaries uploaded by the CREATE ASSEMBLY statement to guarantee the following:
The assembly binary is well formed with valid metadata and code segments, and the code segments have valid Microsoft Intermediate language (MSIL) instructions.
The set of system assemblies it references is one of the following supported assemblies in SQL Server: Microsoft.Visualbasic.dll, Mscorlib.dll, System.Data.dll, System.dll, System.Xml.dll, Microsoft.Visualc.dll, Custommarshallers.dll, System.Security.dll, System.Web.Services.dll, and System.Data.SqlXml.dll. Other system assemblies can be referenced, but they must be explicitly registered in the database.
For assemblies created by using SAFE or EXTERNAL ACCESS permission sets:
The assembly code should be type-safe. Type safety is established by running the common language runtime verifier against the assembly.
The assembly should not contain any static data members in its classes unless they are marked as read-only.
The classes in the assembly cannot contain finalizer methods.
The classes or methods of the assembly should be annotated only with allowed code attributes. For more information, see Custom Attributes for CLR Routines.
Besides the previous checks that are performed when CREATE ASSEMBLY executes, there are additional checks that are performed at execution time of the code in the assembly:
Calling certain Microsoft .NET Framework APIs that require a specific Code Access Permission may fail if the permission set of the assembly does not include that permission.
For SAFE and EXTERNAL_ACCESS assemblies, any attempt to call .NET Framework APIs that are annotated with certain HostProtectionAttributes will fail.
COULD SOMEONE PLEASE GIVE ME THE DEFENITE ANSWER ON HOW THIS WORKS!
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Oct 19, 2007
Hi,
I've got a requirement for a procedure to write a text file and want to do it without using command line utilities.
I wrote a sqlclr which queries a db and writes the file that I need. After setting the external_access and database to trustworthy, It only works on my own machine, not on network shares.
Some threads I've found have been related to the "1 network hop" of Windows credentials, which most of us are probably familiar with.
It doesn't make sense to me that this is the problem, since I'm on my workstation, connecting to a local db instance and hopping one time to the shared server. Anyone know what the cause might be?
Code Block
System.UnauthorizedAccessException: Access to the path '\isrc02Users3sgreene estwrite.txt' is denied.
System.UnauthorizedAccessException:
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy)
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options)
at System.IO.StreamWriter.CreateFile(String path, Boolean append)
at System.IO.StreamWriter..ctor(String path, Boolean append, Encoding encoding, Int32 bufferSize)
at System.IO.StreamWriter..ctor(String path)
at StoredProcedures.Inovah_JV(String& greeting)
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Sep 15, 2006
Hi all,
The problem is: when you're trying to call in method MyMethod anonymous method that doesn't use local variables, deployment of the assembly will fail referring that MyMethod tries to store smth. in the static variable. Indeed, looking at the compiled CLR code, you can see that anonymous delegate is cached in the private static delegate and the call looks like:
If(ClassName.privateStaticDelegate == null)
ClassName.privateStaticDelegate = new MyDelegate(HiddenMethodName);
CallAnonymousMethod(ClassName.privateStaticDelegate);
Is there any workaround to fix this problem.
P.S. I googled about this problem and found only one article on it:
http://www.ayende.com/Blog/default,date,2005-12-26.aspx
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Oct 4, 2006
I know the rule of thumb is to use T-SQL when manipulating data and to use SQLCLR for conditionals, looping, etc. My question is how much slower (percentage, factor of, anything!) is SQLCLR for doing SELECT, INSERT, and UPDATE commands?
Is the performance difference *that* much greater that the simplicity of SQLCLR doesn't apply?
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Jun 23, 2006
CREATE ASSEMBLY uploads an assembly that was previously compiled as a .dll file from managed code for use inside an instance of SQL Server.
What I want to do here is enable/create a "MODIFY" option on CLR-based objects in Object Explorer.
Option is only supported for assemblies who's source code has been previously loaded into DB via ALTER ASSEMBLY
Upon electing the option, source code gets displayed in editor.
Users alters managed source
User clicks the "Execute" button in the editor
onClick of "Execute" performs following
Alters managed source (not sure if this can be done in the system tables, may have to save .cs/.vb files out to file system first then reupload)
Builds updated source/.dll is built
Executes an ALTER ASSEMBLY statement to "refresh" the dll and it's associated source code file(s)
Now...how the heck do i do this lol! Anyone
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May 5, 2006
I can create an external text file from within the SQLCLR project, but I cannot run an external executable. Just in case you are asking, I need to do this to push data into a legacy application using a different DB format. I have found it best to simply use my old language (Clipper) for data validation, etc. - and especially since I require multiple indices to be open. So, if you could just take my word on this.
The following code:
Process newProcess = new Process();
string path = @"C:TEST.BAT";
newProcess.StartInfo.FileName = path;
newProcess.Start();
Executes without error, but does not actually run the external.
Now, I can have a DOS (Clipper) application poll a directory for text files, but I am trying to get away from all these "mini" data transformation applications. If an exception is caused in the DOS app, a remote user on the other side of the country has no idea it is broke and his data (coming from a SQL Mobile Device) never gets to our legacy database structure.
So, am I out of luck?
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Apr 13, 2006
I expected Optional ByRef nArg as Integer=123 to setup a sp arg with a default value of 123. Doesn't look like it does. Anybody know what I'm doing wrong?
Also, I can't write a function with a return using AS System.Int32. There is no RETURN sp arg.
Both situations compile/deploy without error.
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Mar 1, 2007
I have some code in a SQL CLR stored procedure that calls out to a web service at UPS to obtain tracking information for a package.
The code fails on the last line, in the call to WebRequest.GetRequestStream(), with the following exception:
"System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it
at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
at System.Net.Sockets.Socket.InternalConnect(EndPoint remoteEP)
at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Int32 timeout, Exception& exception)
--- End of inner exception stack trace ---
at System.Net.HttpWebRequest.GetRequestStream()
at UPSTracking.TrackShipment(String TrackingUri)"
Here is the relevant code:
WebProxy proxyObject = new WebProxy();
WebRequest request = WebRequest.Create("https://www.ups.com/ups.app/xml/Track");
request.Proxy = proxyObject;
request.Method = "POST";
request.ContentLength = strXMLData.Length;
request.ContentType = "application/x-www-form-urlencoded";
StreamWriter sw = new StreamWriter(request.GetRequestStream());
This same code works just fine when not running in the SQL CLR assembly. The assembly is marked as External, but I've also tried marking it as Unsafe, which did not work either.
Any suggestions on what the problem might be or how to troubleshoot this further would be greatly appreciated.
Thanks,
Steve F.
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