Server Alias/linked Server ALWAYS Uses A Distributed Query?
Apr 4, 2008
Can someone please shed some light on what seems to me to be a common requirement.
If I create an alias or linked server to Server1 - say Alias1 - on Server1 and then use that name in a query on Server1, a remote/distributed query is always used (even though we are running on the local server and that overhead is completely unnecessary).
Is SQL Server really not capable of deciding that
select * from Alias1.db1.dbo.table1
and
select * from Server1.db1.dbo.table1
should be optimized and executed exactly the same when Alias1 is Server1, but that it is a distributed query ONLY when Alias1 is really referring to a remote server? I realize that the four part name is not necessary when I am referring to objects on the current server, but I am trying to write code that is server instance independent.
It just seems that if that is not possible, then the only way to create system independent stored procs that can run in dev, staging, and production environments and work with multiple databases on multiple servers is to create all sorts of scripts to regenerate all the procs whenever you move a database between servers?
If SQL Server is even close to the enterprise big iron server that MS now claims it is, it surely needs to support running in dev, staging, and production environments and work with multiple databases on multiple servers?!
I'm really looking for someone to tell me I'm missing something simple, and of course you can do this - but complex workarounds are invited too :-)
This is not something I am investigating as an academic exercise, I am already doing this, but I have to figure out how to do it better because with all these unnecessary distributed queries, performance is horrible.
Thanks
Sean
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Aug 27, 2007
I receive the following error message when I run a distributed query against a loopback linked server in SQL Server 2005:
The Microsoft Distributed Transaction Coordinator (MS DTC) has cancelled the distributed transaction.
To resolve this problem, I was told that running a distributed query against a loopback linked server is not supported in SQL Server 2005. And I am suggested to use a remote server definition (sp_addserver) instead of a linked server definition to resolve this problem. (Although this is only a temporary resolution, which will deprecate in Katmai)
However, I run into another problem when I use the remote server definition. I receive the following error message:
Msg 18483, Level 14, State 1, Line 1
Could not connect to server 'ServerNameSQL2005' because '' is not defined as a remote login at the server. Verify that you have specified the correct login name.
Could anyone please help me out?
(I include the reproduce steps for the first error message, followed by my resolution that generates the second error message)
======
Reproduce steps for the first error message
======
On the ComputerAInstanceA instance, run the following statement to create a database and a table:
CREATE DATABASE DatabaseA
GO
USE DatabaseA
GO
CREATE TABLE TestTable(Col1 int, Col2 varchar(50))
GO
INSERT INTO TestTable VALUES (1, 'Hello World')
GO
On the ComputerBInstanceB instance, run the following statement to create a database and a table:
CREATE DATABASE DatabaseB
GO
USE DatabaseB
GO
CREATE TABLE TestTable (Col1 int, Col2 varchar(50))
GO
On the ComputerAInstanceA instance, create a linked server that links to the ComputerBInstanceB instance. Assume the name of the linked server is LNK_ServerB.
On the ComputerBInstanceB instance, create a linked server that links to the ComputerAInstanceA instance. Assume the name of the linked server is LNK_ServerA.
On the ComputerBInstanceB instance, run the following statement:
USE DatabaseB
GO
CREATE PROCEDURE InsertA AS
BEGIN
SELECT * from LNK_ServerA.DatabaseA.dbo.TestTable
END
GO
On the ComputerAInstanceA instance, run the following statement:
USE DatabaseA
GO
INSERT INTO TestTable
EXEC LNK_ServerB.DatabaseB.dbo.InsertA
GO
Then I receive the first error message.
=======
My resolution that generates the second error message
=======
On the ComputerBInstanceB instance, run the following statement:
sp_addserver 'ComputerAInstanceA'
GO
sp_serveroption 'ComputerAInstanceA', 'Data Access', 'TRUE'
GO
USE DatabaseB
GO
CREATE PROCEDURE InsertA AS
BEGIN
SELECT * FROM [ComputerAInstanceA].DatabaseA.dbo.TestTable
END
GO
On the ComputerAInstanceA instance, run the following statement:
USE DatabaseA
GO
INSERT INTO TestTable
EXECUTE [ComputerBInstanceB].[DatabaseB].[dbo].[InsertA]
GO
Then I receive the second error message.
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Oct 18, 2000
Three weeks ago we began a project that involved importing data from an AIX DB2 6 environment via a linked server configuration. Following the data import a second query was executed against the db2 environment using data that resides in the new table within SQL 7 in the join statement (a very basic example is provided below) This was all accomplished in sequence via a package.
SELECT F_NAME, L_NAME, PASSWD
FROM SQL7.LOCALSRV.dbo.NEWUSERTBL as new, DB2.SYSIBM.MASTERTBL.OLDUESRTBL as old
WHERE new.USER_ID = old.USER_ID
Originally we had no problems and while the execute time was not exactly speedy it was tolerable as we would revisit optimization after we established if what we were trying to accomplish was feasible. At the outset the first data import to build the local table was immeadeate and then the distributed query to retirieve more info to build another local table against the DB2 server took aproxiamtly 1 minute per user row returned. Currently we are looking at still having an immeadeate data import (a matter of seconds to build the first table)but now we are looking at more than 1 hour returned for 1 correesponding row of data off of DB2. We are utilizing the the IBM DB2 ODBC DRIVER.
Any input or suggestions as to what could be causing this or perhaps a more efficeint way to code the statement would be much appreciated. Thanks in advance.
Adrian
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Feb 13, 2008
I am working on a linked server where a few of the queries use almost exclusively remote tables from 1 other server. I have read somewhere that there are options to specify where a query is performed but can't find it anywhere. Could someone tell me the command and how to use it or point me to something to read about it.
Thanks
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Jun 21, 2006
Hi,
The distributed query seems to work on the management studio of the server where I have linked the other server to but not accross the network on other management studio with the same impersonated logins. The error I get is.
OLE DB provider "SQLNCLI" for linked server "usbo-sql01" returned message "Communication link failure".
Msg 10054, Level 16, State 1, Line 0
TCP Provider: An existing connection was forcibly closed by the remote host.
Msg 18452, Level 14, State 1, Line 0
Login failed for user '(null)'. Reason: Not associated with a trusted SQL Server connection.
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Aug 24, 2006
I am trying to write some admin only procedures which will collect information to one of my development server from other production and development servers.
I have created linked servers to access these other servers on the development server. This development server is SQL Server 2000 EE. Other servers which I want to access are 2000 and 2005 (vaious editions)
E.g I have another development server called PRODTEST which is SQL Server 2005 and on the development server I have created a linked server pointing to PRODTEST called TESTLINKSRV. I want to access new object catalog view (as I do not want to use sysobjects)
When I run the following query
SELECT * FROM [TESTLINKSRV].[DBNAME].[sys].[objects]
I get following error,
OLE DB error trace [Non-interface error: OLE DB provider does not contain the table: ProviderName=' TESTLINKSRV ', TableName='" DBNAME "."sys"."objects"'].
Msg 7314, Level 16, State 1, Line 1
OLE DB provider ' TESTLINKSRV ' does not contain table '"DBNAME"."sys"."objects"'. The table either does not exist or the current user does not have permissions on that table.
So I try this query
SELECT * FROM [TESTLINKSRV].[DBNAME].[sys.objects]
and I get following error
Msg 208, Level 16, State 1, Line 1
Invalid object name TESTLINKSRV.DBNAME.sys.objects'.
So bottom line is how do I access catalog views on a 2005 server from a 2000 server using linked server?
I hope someone understands what I am trying to achieve. Please let me know what is it that I am doing wrong.
Thank you
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Sep 4, 2015
A recent SharePoint upgrade has rendered several views obsolete. I am redefining them so that our upper level executive reports show valid data.(yes, I know that doing anything to sharepoint could cause MS to deny support, having said that, this is something I've inherited and need to fix, pronto) The old view was created like so:
USE [AHMC]
GO
/****** Object: View [dbo].[vwSurgicalVolumes] Script Date: 09/04/2015 09:28:03 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE VIEW [dbo].[vwSurgicalVolumes] AS
SELECT
[code]....
As I said, this view is used in a report showing surgical minutes.SharePoint is now on a new server, which is linked differently (distributed?) I've used OPENQUERY to get my 'new' query to work;
SELECT *
FROM OPENQUERY ([PORTALWEBDB], 'SELECT
--AllLists
AL.tp_ID AS ALtpID
,AL.tp_WebID as altpwebid
,AL.tp_Title AS ALTitle
[code]....
My data (ie surgical minutes, etc) seems to be in the XML column, AUD.tp_ColumnSet . So I need to parse it out and convert it to INT to maintain consistency with the previous view. How do I do this within the context of the view definition?Here is a representation of the new and old view data copied to excel :
<datetime1>2014-08-14T04:00:00</datetime1><float1>2.000000000000000e+000</float1><float2>4.190000000000000e+002</float2><float3>1.600000000000000e+001</float3><float4>8.110000000000000e+002</float4><sql_variant1 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:sqltypes="http://schemas.microsoft.com/sqlserver/2004/sqltypes"
[Code] ....
can't format it to make it look decent. InHouseCases =2, InHouseMinutes=419, OutPatientCases =16, OutPatientMinutes=1230. This corresponds to the new data I can see in the XML column; 2.000000000000000e+000 is indeed 2 and 4.190000000000000e_002 is indeed 419.
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Jan 7, 2002
Hi,
There was a distributed trasaction set up and functioning fine, But gave the following error recently.
The operation could not be performed because the OLE DB provider 'SQLOLEDB' does not support distributed transactions
[OLE/DB provider returned message: Distributed transaction error]
Could anyone please help why is this error and how can be rectified.
Thanks in advance
John Jayaseelan
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Feb 6, 2002
Hi there,
I am trying to link one sql server to other sql server(version 7.0). I was able to link server1 to server2 by creating an odbc source and am able to see the tablenames when i click on the linked server tables.
My problem is..when i am trying to query on these tables its giving me error saying "OLE DB provider 'MSDASQL' does not contain table xxxxxx"
i am using select * from servername.tablename.dbo.tablename.
Any help on this will be appreciated.
Ravi
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Oct 2, 2015
basically, we have two databases, one with fix name, eg. DB1 in all environments, and another is named with prefix based on environment, eg. DB2_DEV, DB2_TEST, that is generated by some managed application.
Then we have queries or view/SPs residing in the first database, eg. DB1 that access database resources from the second database, DB2_***. Both databases are residing in the same SQL instance.
Currently, we have hardcoded the database name in the query but would prefer not to manually rename or write other scripts to update the query with the correct database name when deploying to other environments.
For example:
SELECT * FROM DB2_DEV.dbo.vAccounts
When deploy to TEST, we need to update the query to:
SELECT * FROM DB2_TEST.dbo.vAccounts
So, I looked at Synonyms but it seems it can only create 'alias' for tables or views, and not database.
Hence, last thought is to create self linked server, so I can write my query like below and setup the linked server accordingly.
SELECT * FROM SRCDB.dbo.vAccounts
Any consideration to think of, eg. performance, security, etc?
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Mar 13, 2008
We are migrating a database that makes use of distributed queries. In other words, it queries data from other databases on the same server, as well as from databases on linked servers.
The use of linked servers as well as linked databases (for lack of a better term) presents a challenge since we will need to register various new linked servers in the target environment. Ideally, we would like the database to be portable such that we will not have to worry about registering linked servers regardless of where it is hosted.
Is there a way to write distributed queries so that do not rely on linked servers/databases? For example:
SELECT * FROM [ServerName].[Database].[Owner].[TableName]
If there is such a method, it would make our database much more portable in terms of server migration.
TIA.
El Salsero
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May 27, 2014
As a database developer, I have so many databases that I "own" scattered across various servers that it''s getting difficult to remember where all of my databases reside. It doesn't work that the DBAs have taken to some very hard to remember server naming conventions.
I was going to create aliases via the configuration manager, but it turns out the DBAs overwrite my entries each night with THEIR aliases and they won't add any for my use.
So I decided to simply add some records to my host file so that instead of having to connect to "SERVER-AD_DADF-DAFDASS" I can just use "CustomerA".
This solution seems to work until I tried to access a linked server. If I connect to the main server via it's actual name, I can hit the remote/linked server with no issue. However, if I connect to the main server using it's alias, connection to the remote/linked server fails with: Login failed for user 'NT AUTHORITYANONYMOUS LOGON'.
The linked server is set up to use current security context and I'm not logging into the alias any differently that I do when using the actual server name.
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Jul 20, 2005
I have a database containing my own tables and data and I wanted tobe able to query this against an accountancy program which has an ODBCdriver. This was never a problem with MS Access and Jet but I hit Jet'slimitations and have moved to SQL.Creating my own SQL database was no problem, but I was unsure of thebest way to be able to be able to have my SQL tables and my accountancysoftware tables appearing in the same Access front end.I created a linked server to the accountancy program. This wassuccessful in that I could see all the tables below the linked server inenterprise manager.My problem occurs when I try to bring the data from these tablesinto my SQL database.I create a new view in my database:-SELECT *FROM OPENQUERY(SAGE_SERVER, 'SELECT * FROM STOCK')(My linked server is called 'SAGE_SERVER' and I am trying to retrieveall columns from the STOCK table.)I then try to save this view and get the following errors.ODBC Error: [Microsoft][ODBC SQL Server Driver][SQL Server]The operationcould not be performed because the OLE DB provider 'MSDASQL' was unableto begin a distributed transaction.[Microsoft][ODBC SQL Server Driver][SQL Server]OLE DB Error Trace[OLE/DBProvider 'MSDASQL' ITransactionJoi JoinTransaction returned 0x8004d00a].Thanks in advance,Marcus Thornton.
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Feb 12, 2009
We get the below error while performing a distributed transaction on linked server. We have several linked servers configured in the source server and all of them succeed with the distributed transaction except on one.
We did all the basic troubleshooting and moreover the distributed transactions work fine if we use a remote server instead.
Error:
OLE DB provider "SQLNCLI10" for linked server "SERVERNAME.REDMOND.CORP.MICROSOFT.COM" returned message "No transaction is active.".
Msg 7391, Level 16, State 2, Line 3
The operation could not be performed because OLE DB provider "SQLNCLI10" for linked server "SERVERNAME.REDMOND.CORP.MICROSOFT.COM" was unable to begin a distributed transaction.
Test code:
begin distributed transaction
select top 10 * from [SERVERNAME.REDMOND.CORP.MICROSOFT.COM].master.sys.objects
ROLLBACK
Source server :
Microsoft SQL Server 2008 (RTM) - 10.0.1779.0 (X64)
Nov 12 2008 12:10:04
Copyright (c) 1988-2008 Microsoft Corporation
Enterprise Edition (64-bit) on Windows NT 6.0 <X64> (Build 6001: Service Pack 1) (VM)
Target server :
Microsoft SQL Server 2008 (RTM) - 10.0.1600.22 (Intel X86)
Jul 9 2008 14:43:34
Copyright (c) 1988-2008 Microsoft Corporation
Enterprise Edition on Windows NT 5.2 <X86> (Build 3790: Service Pack 2)
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Jan 24, 2008
Is it possible to query linked servers without the Distributed Transaction Coordinator service enabled or allowing network access?
Is that ONLY for transactions? What if I just wanted to read the data and nothing else?
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Nov 29, 2007
if it is possible to run a distributed query against 2000 from 2005, what would the OPENDATASOURCE parameters look like? I'd like to be able to pivot without copying my older 2000 db to 2005 or using linked servers..
For reference, here's an example of a distrib query that reads excel...
ie SELECT * INTO XLImport3 FROM OPENDATASOURCE('Microsoft.Jet.OLEDB.4.0',
'Data Source=C: estxltest.xls;Extended Properties=Excel 8.0')...[Customers$]
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Apr 16, 2015
Using a 32-Bit SQL Server 2008 Express on my LOCAL PC. I downloaded the Advantage 8.1 OLE DB Provider and created a linked server to a REMOTE Advantage 8.1 database server. There is no data dictionary on the Advantage server.
Here is my linked server:
EXEC master.dbo.sp_addlinkedserver @server = N'1xx.1xx.xx.1xx', @srvproduct=N'Advantage', @provider=N'Advantage OLE DB Provider', @datasrc=N'1xx.1xx.xx.1xxeccET', @provstr=N'servertype=ads_local_server;tabletype=ads_cdx;'--tabletype=’ADS_ADT’ (this test works too)
EXEC master.dbo.sp_addlinkedsrvlogin @rmtsrvname=N'1xx.1xx.xx.1xx',@useself=N'False',@locallogin=Null,@rmtuser='adssys',@rmtpassword=Null
Testing the link succeeds with above. Using “ads_REMOTE_server” instead of “ads_local_server” and the test fails. Here is my problem, using the following queries will not work. Perhaps it’s a permissions issue? When I specify my local credentials for the remote server in the linked server it still does not work.
SELECT * FROM OPENQUERY([1xx.1xx.xx.1xx], 'SELECT * FROM ActType')
OLE DB provider "Advantage OLE DB Provider" for linked server "1xx.1xx.xx.1xx" returned message "Error 7200: AQE Error: State = HY000; NativeError = 5004; [Extended Systems][Advantage SQL][ASA] Error 5004: Either ACE could not find the specified file, or you do not have sufficient rights to access the file. Table name: ActType SELECT * FROM ActType".
Msg 7321, Level 16, State 2, Line 2
An error occurred while preparing the query "SELECT * FROM ActType" for execution against OLE DB provider "Advantage OLE DB Provider" for linked server "1xx.1xx.xx.1xx".
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Jan 16, 2008
Hello
SQL 2000: 8.00.2187 x86, 8 way 700mhz, 6GB Ram
SQL 2005: 9.00.3042 IA64 2 Way Dual-Core 1.66Mhz 16 GB ram
Symptoms
Querys to the SQL 2005 box from SQL 2000 work but when the query is parameterised with non-literals (@variables) then the query run on the SQL 2005 box excludes any where clause causing the entire table to be returned to the SQL 200 box. When the query is parameterised using literal values the query is executed on SQL 2005 including the where clause.
At first I thought that the "Collation Compatible" setting was the culprit but setting this to 1 made no difference. Other SQL 2000 boxes work as expected and any queries from these using literal and non-literal parameters.
Please, any ideas?
Working
SELECT A.Column FROM linkedServer.IA.dbo.Table Where A.Column = 'value'
Not Working (correctly anyway!)
DECALRE @Value tinyint
SET @Value = 22
SELECT A.Column FROM linkedServer.IA.dbo.Table Where A.Column = @value
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May 27, 2008
Hello,
I have a development and a production SQL server instance environment set up on 2 independent machines. Each machine is running Windows 2003 for an OS, while each server instance is version SQL Server 2005. On friday, I experienced difficulties querying one environment from the other through linked servers. I would get the error below:
.
Cannot obtain the schema rowset "DBSCHEMA_TABLES_INFO" for OLE DB provider "SQLNCLI" for linked server "dev_server". The provider supports the interface, but returns a failure code when it is used
The linked servers had been previously set up and had been running without any issues. Dropping and recreating the linked servers did not help at all, and all attempts to google the error led to accounts of either SQL Server 2005-SQL Server 2000 procedures compatibility or 64 bit - 32 bit compatibily related errors. Neither of the two were relevant as both my environment have the same technology, both hardware and software.
Mysteriously, the linked server worked this morning without any issue at all. One co-worker suggests gremlins are at work, while another figures that my set up had 'checked out for the long weekend'. Unfortunately, neither explanation is plausible, so my quest to find out what could have gone wrong, and hopefully put preventitive measures in place for the future goes on. Does anybody have any idea what the issue could have been?
Thanks,
Simba
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Aug 4, 2015
I am trying to run a query from a Linked server "ABCD"
Set @SQLCMD = 'Select * from TableName"
Insert into @TempTableName
Execute (@SQLCMD) AT ABCD
I am getting below error while running the above statements. When I Remove the Insert into @TempTableName it is working fine.
The operation could not be performed because OLE DB provider "SQLNCLI10" for linked server "ABCD" was unable to begin a distributed transaction.
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May 15, 2008
Hello, I've a problem with a software developed in C# with the framework 2.0. This is the error I receive : The operation could not be performed because OLE DB provider "SQLNCLI" for linked server "XXX_LINKED_SERVER" was unable to begin a distributed transaction. OLE DB provider "SQLNCLI" for linked server "XXX_LINKED_SERVER" returned message "No transaction is active.". If I try directly to restart the process, it works fine. Is there someone who can help me ? This is the process 1. In C# --> Call of a Query : select from the linked server (db in sql 2005) and insert into a table SQL 2005 2. In the C# --> using (TransactionScope scope = new TransactionScope()) and insert in a table in SQL 2005 which is link server Thank in advance.
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Feb 12, 2008
Hi,
I have two servers S1,S2.
I am currently connect to S1 but I want to Query a table from S2 without creating a linked server.
Is it possible.Can someone please post some information on how this can be accomplished.
ETL, Lookup ,Stored procedure anything is ok. I am using SQL Server 2005.This is a very urgent requirement.
Please help!
Thanks,
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Dec 6, 1999
I have Two Access Databases connected as Linked servers through ODBC driver.
I want to run a Distributed Query .
The SQL is as follows:
SELECT Alias1.FiledNames,Alias2.FiledNames from
FROM LinkedServer1.DatabaseName1.dbo.Tablename1 AS Alias1,
LinkedServer2.DatabaseName2.dbo.Tablename2 AS Alias2
It gives me this error message.
ODBC: Msg 0, Level 19, State 1
SqlDumpExceptionHandler: Process 12 generated fatal exception c0000005 EXCEPTION_ACCESS_VIOLATION. SQL Server is terminating this process.
Connection Broken
Am i missing something?
Thanks in Adavance
Puru
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Mar 25, 2002
Hi ,
On my Desktop i registered Production Server in Enterprise Manager
on that Server if i go to SecurityLinked Servers
There is another Server is already mapped, when i am trying to see the Tables under that one of the
Linked Server i am getting the Error message saying that
"Error 17 SQL Server does not exist or access denied"
if i went to Production Server location and if i try to see the tables i am able to see properly, no problems
why i am not able to see from my Desk top
i am using the sa user while mapping the Production Server on my DESKTOP using (ENTERPRISE MANAGER)
And i check the Client Network Utility in the Alias using Named Pipe only, i changed to TCP/IP still same problem
What might the Problem how can i see the Tables in Linked Server from my DESKTOP
Thanks
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Apr 24, 2015
I am using Linked Server in SQL Server 2008R2 connecting to a couple of Linked Servers.
I was able to connect Linked Servers, but I cannot point to a specific database in a Linked Server, also, I cannot rename Linked Server's name.
How to point the linked server to a specific database? How to rename the Linked Server?
The following is the code that I am using right now:
USE [master]
GO
EXEC master.dbo.sp_addlinkedserver
@server = N'Machine123Instance456',
@srvproduct=N'SQL Server' ;
GO
EXEC sp_addlinkedsrvlogin 'Machine123Instance456', 'false', NULL, 'username', 'password'
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May 8, 2001
Greetings all,
I have successfully been able to use a SELECT query to see tables on a remote (Linked) server. Now, I want to be able to join those records with a WHERE clause to the same tables I have on my local database. The idea here is to be able to see current data on my local database(which is not current data), which resides in the remote database(which is current data). Here is what I have so far:
SELECT top 10 * from LinkServer.MC_Card.webuser.POS_TX
But, I'm not sure how to SELECT from two tables. Would I do a SELECT from the local database WHERE all records = records on the remote database?
Not sure how to do this. Is this what would be considered a Distributed Query? And how would I make this work with joins like the existing joins I have to the tables in my local database?
This is new territory for me. Sorry if this is such a newbie question.
Thanks,
Bruce
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Nov 7, 2006
I'm using MS SQL Server Express and I've added a linked server. (I created the linked server by right mouse clicking on Server Objects, selecting SQL and entering the SQL2 as the name.) Now I'm trying to query a linked table. The following query works.
SELECT * FROM SQL2.PA.dbo.Counties
This one doesn't:
Select * from OPENQUERY(SQL2,"SELECT * FROM SQL2.PA.dbo.Counties")
Msg 102, Level 15, State 1, Line 1
Incorrect syntax near 'SELECT * FROM SQL2.PA.dbo.Counties'.
Can you tell me why?
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Apr 19, 2004
I have two tables in a linked server that I am trying to accomplish the following:
Server is called Medic, schema is informix, catalog is v001
table names are findet and findhdr
1) join indices (patkey and invno)
2) distinct count (finhdr.patid)
3) sum currency(findet.amount)
4) within a date range(findet.ar_date)
5) having specific criteria (findet.proccode = "99201 thru 99205")
Any help is greatly appreciated!
JT
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Jan 25, 2008
Hi guys I need some help connecting to a LINKED SERVER. I have setup the LINKED SERVER via Enterprise Manager. This is what I did. I know this is a difficult thing to explain so I will try my best and attempt to give you a good understanding of the scenario.
1. I have three servers named DEVUK, DEVUS and DEVASIA.
2. DEVUK I can connect to via my computer and contains a databases called GOD.
3. I went into DEVASIA server and went to Administrative Tools > New ODBC Connection and called it DEVASIAUK.
4. Setup everything in there and tested the connection which completed successfully.
5. I am now on my computer where I have connected to DEVASIA and gone into Server Objects > Linked Servers.
6. I created a new LINKED SERVER and under GENERAL TAB have stated DEVASIAUK and Provider as SQL Server.
7. Security I have used NT_AUTHORITYand option BE MADE USING THE LOGINS CURRENT SECURITY CONTEXT.
I have the SQL Command: SELECT * FROM DEVASIAUK ... tblLocalTable
Am I doing this right? Or am I missing something here? I am new to Linked Servers but it shows it is executing a query but then it says Login Failed.
Appreciate any help, thanks, Onam
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Mar 29, 2001
Is there a way to set four part reference used in distributed query to a short
name in local server, so for each query you do not have to type the LONG four
part ref. repeatedly to linked server objects ?
Thanks a lot.
-Steve
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Apr 20, 2001
I need to query a linked server (which is Oracle) with some parameters. When I try to use a four part SQL statement, it does not work. But when I try to use OPEENQUERY statement, it works just fine. Problem comes when I need to send some parameters with the OPENQUERY'S 'query' part.
For example, the following statement works just fine:
SELECT *
FROM OPENQUERY(OracleLinked, "SELECT ACCOUNTNUMBER, POSTINGDATE FROM ORA_SERVER.FINANCEENTRY WHERE DATEOFENTRY BETWEEN '2000.01.01' AND '2000.01.31'")
But If I try to use:
DECLARE @DynamicSQL VARCHAR(1000),
@StartDate VARCHAR(10),
@EndDate VARCHAR(10)
SET @StartDate = '2000.01.01'
SET @EndDate = '2000.01.31'
SELECT @DynamicSQL = "SELECT ACCOUNTNUMBER, POSTINGDATE FROM ORA_SERVER.FINANCEENTRY WHERE DATEOFENTRY BETWEEN '" + @StartDate + "' AND '" + @EndDate + "'"
--SELECT @DynamicSQL
SELECT *
FROM OPENQUERY(OracleLinked, @DynamicSQL)
it does not work.
Well, I did some research and found out that OPENQUERY does not accept variables for its arguments. See the link below:(http://msdn.microsoft.com/library/psdk/sql/ts_oa-oz_5xix.htm)
Then is there any way I can accomplish what I want to on the Remote server?
Thanks in advance for your help.
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Apr 25, 2001
I have a delete query on a linked server that never ends. I can do a select where ID = x and it returns lickity split but when I do a delete where id = x it never comes back? Any Clues???
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May 14, 2001
Hi,
I am now facing a problem related to the linked server. I created the connection between server A and B as linked servers. When I execute the following SQL statement on server A,
select * from B.database1.dbo.tableA where id ='12345'
I can get the results within couple of seconds. But the similar query would take several minutes if I switch the server name in the query from B to A and
run it on server B! The tables on server A and B actually have the same sizes and the same indexes.
Do you have any clues and suggestions on this issue?
Thanks in advance.
Keith
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