What Is SQLCLR Model? Assembly Is Loaded Each Time SP Is Called?
Aug 21, 2006
Hi,
I have create few Mannaged SP which acces some external resources like closing and starting some windows process.. the assembly is assigend unsafe security level
all the processes are started from sqlserver.exe service and are allowed to interact with desktop
these SPs are called frequently
Problem... a very few times sql server is crashed..
does mannaged SP load app domain each time they are called?
what possible reason can be?
I am not exactly clear about the reson .. so I decided to post over here ..
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.
This is working fine. Assembly is loaded and WebControl is created.
But as my Custom WebControl tries to access SQL Server database, i get a "Must declare the variable '@id'" while executing an ExecuteScalar() from a SqlCommand.
Code in my WebControl was perferctly functioning before converting it from a UserControl (.ascx) to Custom WebControl. Parameter '@id' is correctly declared in my query. If i don't use SqlParameters, everithing works fine...
In article http://support.microsoft.com/kb/913668 it says to generate a serialization assembly and pop this into the database along side the assembly with the serialized type. All well and good, but how doe the XmlSerializer know to look in the database for the assembly - does it use the name of the assembly + XmlSerializer?
It is certainly ambiguous in the aforementioned kb article. In one place it generates an assembly in the database called
CREATE ASSEMBLY [MyTest.XmlSerializers] from 'C:CLRTestMyTestMyTestinDebugMyTest.XmlSerializers.dll' WITH permission_set = SAFE
and in another it uses
USE dbTest GO CREATE ASSEMBLY [MyTest] from 'C:CLRTestMyTest.dll' GO CREATE ASSEMBLY [MyTest.XmlSerializers.dll] from 'C:CLRTestMyTest.XmlSerializers.dll' GO
I can't get either to work, and I've tried various combinations, this and the fact that the kb artice uses two different naming conventions suggests to me that there must be "something else" which links the assembly with the serialization assembly.
I have MS Time Seeries model using a database of over a thousand products each of which has hundreds of cases. It amazingly takes only a few minutes to finish processing the model, but when I click Mining Model Viewer to view the models, it takes many hours to show up. Once the window is open, I can choose model for different products almost instantly. Is this normal?
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.
are sqlclr stored proc sessions running in the same SQLOS execution model (Running, runnable and suspended status, Runnable Queue and Wait List) as other types of sessions and therefore ending up in the same queues, contending for very similar resources (except maybe for memory type because of MTL's role) etc?...or do they get treated in a very different way?
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!
I have a very simple time series model which processing works fine without any problem. However when I run the following query
SELECT
[TimeSeries].[PriceChange],
[TimeSeries].[Symbol],
PredictTimeSeries(PriceChange, -3, 2)
From
[TimeSeries]
WHERE
[TimeSeries].[Symbol] = 'x'
I get the following error:
TITLE: Microsoft SQL Server 2005 Analysis Services ------------------------------ Error (Data mining): A time series prediction was requested with a start time further in the past than the internal models of the mining model, TimeSeries, specified in the HISTORIC_MODEL_GAP and HISTORIC_MODEL_COUNT parameters can process.
The following is the excerpt of the minding model script related to the two parameters:
<AlgorithmParameters>
<AlgorithmParameter>
<Name>MISSING_VALUE_SUBSTITUTION</Name>
<Value xsi:type="xsdtring">Previous</Value>
</AlgorithmParameter>
<AlgorithmParameter>
<Name>HISTORIC_MODEL_GAP</Name>
<Value xsi:type="xsd:int">1</Value>
</AlgorithmParameter>
<AlgorithmParameter>
<Name>HISTORIC_MODEL_COUNT</Name>
<Value xsi:type="xsd:int">10</Value>
</AlgorithmParameter>
</AlgorithmParameters>
These HISTORIC_MODEL_GAP (1) and HISTORIC_MODEL_COUNT (10) should accommodate PredictTimeSeries(PriceChange, -3, 2). Could anyone shed some light on this?
In my DB, many of my tables have a column named upsize_ts I have already been told that it is not linked in any way with the data in the DB. The data type of these columns is timestamp and every record in those colum is this : "<Binary>" Now maybe it's because the whole DB comes from an export from an Access DB, or maybe not. I just had a few questions:
1/ Does anyone know why that column got generated and what it means? (optional) 2/Now the real question: is there any statement allowing me to "mass-drop" all those columns named "upsize_ts" in every table of my DB at the same time? Or at least any way not to do it one drop table at a time?
I work with February CTP of SqlServer 2008. I have an Assembly with several UDTs inside. Version of assembly is 1.0.* I use CREATE ASSEMBLY statement to register this assembly, and it runs without any errors. Then I rebuild CLR solution without doing any changes in source code. In that case the only difference between new and old assemblies is version (difference in fourth part of version). Then I try to update assembly in SqlServer. I use ALTER ASSEMBLY <name> FROM <path> WITH PERMISSION_SET = UNSAFE, UNCHECKED DATA statement for this. Statement runs with error: Msg 6509An error occurred while gathering metadata from assembly €˜<Assembly name>€™ with HRESULT 0x1. I found the list of condition for ALTER ASSEMBLY in MSDN: ALTER ASSEMBLY statement cannot be used to change the following: · The signatures of CLR functions, aggregate functions, stored procedures, and triggers in an instance of SQL Server that reference the assembly. ALTER ASSEMBLY fails when SQL Server cannot rebind .NET Framework database objects in SQL Server with the new version of the assembly. · The signatures of methods in the assembly that are called from other assemblies. · The list of assemblies that depend on the assembly, as referenced in the DependentList property of the assembly. · The indexability of a method, unless there are no indexes or persisted computed columns depending on that method, either directly or indirectly. · The FillRow method name attribute for CLR table-valued functions. · The Accumulate and Terminate method signature for user-defined aggregates. · System assemblies. · Assembly ownership. Use ALTER AUTHORIZATION (Transact-SQL) instead. Additionally, for assemblies that implement user-defined types, ALTER ASSEMBLY can be used for making only the following changes: · Modifying public methods of the user-defined type class, as long as signatures or attributes are not changed. · Adding new public methods. · Modifying private methods in any way.
But I haven€™t done any changes in source code, so new version of assembly satisfies all this conditions. What could be the reason for such behavior? P.S. I€™ve got the same error, if I add or change any method in assembly before rebuilding.
I want to hear from you for your experiences on how can we be convinced by what the model predicts particularly for Time Series algorithm? As we are not able to see the model accuracy chart for that, in this case, how can use the model results? E.g. we wanna know the possible sales amount of next month for a particular store in order to buy in the goods, in this case, how can we make the most of the prediction by the model? To shop ower, well, if the result is too far away from the usual sales amount, then it is unbelievable, thus, in this case, what else can we try? Keep training the models until its results sounds reasonable? Or what else can we try?Thanks in advance for your advices and help and I am looking forward to hearing from you shortly.
I know that I can add a column to a mining structure and/or model more than once using XMLA. However, I am having a problem doing the same using DMX. I now that DMX does not support data binding and that it relies on the INSERT INTO... construct to essentially map the structure columns to the incoming comluns from the data source. I tried to use "AS" like I would in SQL but it doesn't seem to like it.
Can anyone confirm that this can only be done using XMLA and not DMX? If I am mistaken, it would be greatly appreciated if you could provide an example on how to do this using DMX.
For background on why I would want to add the same column to a model more than once please read this post.
Hi, I have built a Time Series model to forecast Sales Value. I have used data form Jan 2005 to Sep2006 to train the model. When I write a DMX query to forecast the sales value for next 5 months, it is throwing me the output in the following format.
I have built a Sales Forecast model to predict the sales value. Along with making historic predictions for previous time periods I also want to retrieve the actual sales values for those periods.
How can I achieve this in a time series model?
I also would like to know how do mining models store the data.
Do they store the data in the same table/view format as their respecive data source view or in the Model Content format.
As the Microsoft Time Series algorithm implementation is based upon the Autoregressive Tree approach described in:
C. Meek, D. M. Chickering, D. Heckerman. Autoregressive Tree Models for Time-Series Analysis. In Proc. 2nd Intl. SIAM Conf. on Data Mining, 2002 (SDM-02). SIAM, pp. 229 €“ 244. http://www.siam.org/meetings/sdm02/proceedings/sdm02-14.pdf.
The model estimated is refererred to as an instance of "... autoregressive tree models of length p, denoted ART(p). An ART(p) model is an ART model in which each leaf node of the decision tree contains an AR(p) model, and the split variables for the decision tree are chosen from among the previous p variables in the time series..." (see the last paragraph of p. 2 of the paper).
What is the value of "p" used in the Microsoft Time Series implementation -- specifically, how many previous time series variables are used in estimating the model? It doesn't appear that this value can be specified in the algorithm parameters -- is that correct?
I have a separate date dimension marked as Date table in Tabular Model and having proper relationship with another table(e.g SalesTable) with column of date type. But still time intelligence functions are not working. I am using the date column from other table (e.g SalesTable) in the formula. What exactly going wrong in our tabular model.
I am trying to get a function I created in VB 5 for Access and Excel to work in SQL 2005. I was able to update the old VB code to work in VB 2005. I compiled and made a .dll, and I was able to register the new Assembly in SQL Server. When I try to create the Function, I get an error:
AS EXTERNAL NAME FluidProps.[FluidProps.FluidProperties.Fluids].Temperature
Error returned:
Msg 6573, Level 16, State 1, Procedure Temperature, Line 21
Method, property or field 'Temperature' of class 'FluidProps.FluidProperties.Fluids' in assembly 'FluidProps' is not static.
Here is the code (part of it) in the VB class:
Header:
Imports Microsoft.SqlServer.Server
Imports System.Data.SqlClient
Imports System.Runtime.InteropServices
Imports System.Security
Imports System.Security.Permissions
Namespace FluidProperties
'Option Strict Off
'Option Explicit On
Public Partial Class Fluids
Function:
Function Temperature(ByRef FluidName As Object, ByRef InpCode As Object, ByRef Units As Object, ByRef Prop1 As Object, Optional ByRef Prop2 As Object = Nothing) As Object
If I change the Function Temperature to Static, I get an error that functions cannot be Static. Its been a long time since I created the code and am having a hard time in my older age of getting the cobwebs out to make it work.
I have no problem getting the function to work if I call it from a VB form....so what do I need to do to get it to work on data in my SQL server?
I previously had an ASP.NET 1.1 site running on my IIS 6.0 server (not the default website) with Reporting Services running in a subdirectory of that website. I recently upgraded to ASP.NET 2.0 for my website and was greeted with an error when trying to view a report. The error was very non-descript, but when I checked the server logs, it recorded the details as "It is not possible to run two different versions of ASP.NET in the same IIS process. Please use the IIS Administration Tool to reconfigure your server to run the application in a separate process."
First of all, I could not figure out where and how to do this. Secondly, I decided to try to also change the Reporting Services folders to run ASP.NET 2.0 and when I did, I was greeted with the following message when attempting to view a report:
"Failed to load expression host assembly. Details: StrongName cannot have an empty string for the assembly name."
I am a bit paranoid about what I just did to my SQL Server 2005 with this CLR experiment.
I created a Class Lib in C# called inLineLib that has a class Queue which represents an object with an ID field.
in another separate namespace called inLineCLRsql, I created a class called test which will hold the function to be accessed from DB, I referenced and created an instances of the Queue class, and retrieve it's ID in a function called PrintMessage.
to access this from the db, I attempted to create an assembley referencing inLineCLRsql.dll. This didn't work as it complained about inLineLib assembly not existing in the db. I then attempted to create an assembley for inLineLib but it barfed saying System.Management assembly not created.
so what I did is (and this is where I need to know if I just ruined sql server or not):
1- ALTER DATABASE myDB SET TRUSTWORTHY ON;.
2- CREATE ASSEMBLY SystemManagement
FROM 'C:WINDOWSMicrosoft.NETFrameworkv2.0.50727System.Management.dll'
WITH PERMISSION_SET = UNSAFE
3- CREATE ASSEMBLY inLineLibMaster
FROM 'D:inLineServerinLineLibinDebuginLineLib.dll'
WITH PERMISSION_SET = unsafe
4- and finally
CREATE ASSEMBLY inLineLib
FROM 'D:inLineServerCLRSQLinlineCLRsqlinDebuginlineCLRsql.dll'
WITH PERMISSION_SET = SAFE
Everything works after those steps (which took some trial and error). I can create a sproc like:
CREATE PROC sp_test AS
EXTERNAL NAME inLineLib.[inlineCLRsql.test].PrintMessage
and it returns the Queue ID
Is there anything unadvisable about the steps above?
Again I encountered a very strange problem which displayed the predicted attribute values as percentage format? The data type of the attribute is actually double, why is that?
That's really frustrated.
Thanks a lot in advance for your kind advices and I am looking forward to hearing from you shortly.
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.
I am trying to deploy a Database Project with Visual Studio 2005 and SQL Server 2005 Standard. I import €œSystem.IO€? and have therefore set the permission levels to EXTERNAL_ACCESS.
I am receiving the same error message that many folks have received.
CREATE ASSEMBLY for assembly 'Images' failed because assembly 'Images' is not authorized for PERMISSION_SET = EXTERNAL_ACCESS. The assembly is authorized when either of the following is true: the database owner (DBO) has EXTERNAL ACCESS ASSEMBLY permission and the database has the TRUSTWORTHY database property on; or the assembly is signed with a certificate or an asymmetric key that has a corresponding login with EXTERNAL ACCESS ASSEMBLY permission. If you have restored or attached this database, make sure the database owner is mapped to the correct login on this server. If not, use sp_changedbowner to fix the problem. Images.
My CLR access is €œon€?
I have tried
1) From master run: GRANT EXTERNAL ACCESS ASSEMBLY to [BuiltinAdministrators]. 2) From master run: GRANT EXTERNAL ACCESS ASSEMBLY to €œMy Windows Authentication ID€?. 3) Run ALTER DATABASE MYDATABASE SET TRUSTWORTHY ON 4) In Visual Studio .NET 2005 Set the permission levels to €˜external€™ 5) Tried BuiltinAdministrators and my SQL Server Windows Authenticated Login ID for the ASSEMBLY OWNER.
I can compile BUT NOT DEPLOY
Any help would be greatly appreciated. Regards Steve
I was trying to understand how VS.NET2005 was deploying .NET CLR assemblies to SQL2005 so I ran a trace and found some interesting results.
VS.NET creates some SQL that looks pretty interesting:
CREATE ASSEMBLY [AssemblyNameHere] FROM 0x4D5A90000300000004000000FFFF000......<continue binary data> WITH PERMISSION_SET = EXTERNAL_ACCESS
Boy howdy!
I have tried to reproduce this and create my own deployment application but I cant figure out how they create this binary stream. The info in BOL is not much help and I have not found any samples anywhere on how to create this stream in c#.
I need to develop a language specific dwh, meaning that descriptions of products are available from a SAP system in multiple languages. English is the most important language and that is the standard. But, there are also requirements of countries that wants productdescriptions in their language.Â
Productnr Productdesc Language 1       product    EN 1       produkt    DE
One option is to column the descriptions, but that is not very elegantly. I was thinking of using bridge tables to model this but you have to always select a language in a filter (I think)..
I'm thinking of a technical solution, such that when a user logs on, the language is determined and a view determines whether to pick a certain product table specific for a certain language. But then I don't have the opportunity to interchange the different language specific fields in a report (or in my case PowerPivot).
We have our Production server having database on which Few DTS packages execute every night. Most of them have Bulk Insert stored procedures running.
SO we have to set Recovery Model of the database to simple for that period of time, otherwise it will blow up our logs.
Is there any way we can set up log shipping between our production and standby server, but pause it for some time, set recovery model of primary db to simple, execute DTS Bulk Insert Jobs, Bring it Back to Full recovery Model AND finally bring back Log SHipping.
It it possible, if yes how can we achieve this.
If not what could be another DR solution in this scenario.
I'm running SQL Server Agent services and SQL Server Integration services under same DomainUser account and the same DomainUser account is also having sysadmin rights in sql server.
And below is the SQLAgent.OUT file details which I'm getting while running the SSIS from SQL Agent job.
[100] Microsoft SQLServerAgent version 9.00.1399.06 (x86 unicode retail build) : Process ID 4012 [101] SQL Server MachineNameXYZ version 9.00.1399 (0 connection limit) [102] SQL Server ODBC driver version 9.00.1399 [103] NetLib being used by driver is DBNETLIB.DLL; Local host server is [310] 4 processor(s) and 3072 MB RAM detected [339] Local computer is MachineNameXYZ running Windows NT 5.2 (3790) Service Pack 1 [432] There are 11 subsystems in the subsystems cache [125] Subsystem 'ActiveScripting' could not be loaded (reason: The specified module could not be found) [125] Subsystem 'CmdExec' could not be loaded (reason: The specified module could not be found) [125] Subsystem 'Snapshot' could not be loaded (reason: The specified module could not be found) [125] Subsystem 'LogReader' could not be loaded (reason: The specified module could not be found) [125] Subsystem 'Distribution' could not be loaded (reason: The specified module could not be found) [125] Subsystem 'Merge' could not be loaded (reason: The specified module could not be found) [125] Subsystem 'QueueReader' could not be loaded (reason: The specified module could not be found) [125] Subsystem 'ANALYSISQUERY' could not be loaded (reason: The specified module could not be found) [125] Subsystem 'ANALYSISCOMMAND' could not be loaded (reason: The specified module could not be found) [125] Subsystem 'SSIS' could not be loaded (reason: The specified module could not be found) [364] The Messenger service has not been started - NetSend notifications will not be sent [129] SQLSERVERAGENT starting under Windows NT service control [260] Unable to start mail session (reason: No mail profile defined) [396] An idle CPU condition has not been defined - OnIdle job schedules will have no effect [LOG] Step 1 of job 'TestJob' (0x4A197E88EAD5134581A35132A546414C) cannot be run because the SSIS subsystem failed to load. The job has been suspended [LOG] Unable to read local eventlog (reason: The parameter is incorrect) [LOG] Unable to read local eventlog (reason: The parameter is incorrect) [LOG] Step 1 of job 'TestJob' (0xE412C2AB10C7A34B87F5DFC8CFD978CA) cannot be run because the SSIS subsystem failed to load. The job has been suspended [LOG] Unable to read local eventlog (reason: The parameter is incorrect)
