Questions tagged [linked-server]

Linked server allows operation to multiple server as one query.

Filter by
Sorted by
Tagged with
32
votes
2answers
58k views

Which one is more efficient: select from linked server or insert into linked server?

Suppose I have to export data from one server to another (through linked servers). Which statement will be more efficient? Executing in source server: INSERT INTO [DestinationLinkedServer].[...
27
votes
4answers
7k views

Copying (hundreds of) tables from one server to another (with SSMS)

I have several hundred (currently 466, but ever growing) tables I have to copy from one server to another. I have never had to do this before, so I'm not sure at all on how to approach it. All the ...
21
votes
3answers
76k views

Pivot rows into multiple columns

I have a SQL Server instance that has a linked server to an Oracle server. There is a table on the Oracle server called PersonOptions which contains the following data: ╔══════════╦══════════╗ ║ ...
21
votes
5answers
4k views

Why is this explicit cast causing problems only with a Linked Server?

I am querying data from a linked server through a view on the origin server. The view has to include a couple of standardized columns, such as Created, Modified and Deleted, but in this case the table ...
20
votes
2answers
70k views

How can I get my linked server working using Windows authentication?

I'm trying to get a linked server to ServerA created on another server, ServerB using "Be made using the login's current security context" in a domain environment. I read that I'd need to have SPNs ...
19
votes
5answers
18k views

Why do linked servers have a limitation of 10 branches in a CASE expression?

Why does this CASE expression: SELECT CASE column WHEN 'a' THEN '1' WHEN 'b' THEN '2' ... c -> i WHEN 'j' THEN '10' WHEN 'k' THEN '11' END [col] ...
14
votes
3answers
18k views

Creating a Linked Server that Points to Itself

I am attempting to create a linked server on SQL Server 2014 instance servername\instancename using the following call: EXEC master.dbo.sp_addlinkedserver @server = N'servername\instancename', ...
14
votes
3answers
2k views

How to reload a linked server?

I am using Microsoft SQL Server 2014 Enterprise Edition. A problem occurs with the linked servers where it is necessary to restart the server, or to stop the MSSQLSERVER service. When the server is ...
13
votes
5answers
14k views

Linked server error not caught by TRY-CATCH

I am setting up a job to loop through a list of linked servers and execute a specific query against each one. I am trying to execute the query inside a TRY-CATCH block so if there's a problem with one ...
13
votes
5answers
37k views

SQL Server Linked Server performance: Why are remote queries so expensive?

I have two database servers, connected via Linked Servers. Both are SQL Server 2008R2 databases, and the linked server connection is made via a regular "SQL Server" link, using the current login's ...
10
votes
3answers
12k views

Linked Server Risks

I'm implementing a new feature which requires data from databases on multiple servers. I just need to union data from all these servers and sort it. The two options that come to mind are: Use linked ...
10
votes
1answer
7k views

8000 character limit on OPENQUERY against a linked server

I have a query that I'm trying to run through OPENQUERY on SSRS/SQL Server 2014, but I keep getting an error of: The character string that starts with [...] is too long. Maximum length is 8000. Is ...
9
votes
1answer
907 views

What big limitations should I expect from Linked SQL Servers?

Our product is based on Microsoft SQL Server. Currently, we are using three databases, and have always deployed them on one SQL Server instance. The three database are OLTP, OLAP, and audit. The OLAP ...
9
votes
2answers
5k views

How do I write portable SQL that refers to a linked server?

I've got a stored procedure that refers to a linked server. In several places throughout the procedure I've got something like the following: INSERT INTO [TableName] (...Columns...) SELECT ...Columns....
9
votes
1answer
21k views

Using a linked server with OPENQUERY in a database project

I have a SQL Server 2008 running a database I want to throw in TFS. Therefore I used a Visual Studio 2013 database project where I imported the DB. After fixing a bunch of errors I'm stuck with only ...
9
votes
2answers
52k views

Linked server available to users without permissions

I have users seeing a linked server which they are not supposed to see. The linked server is defined so that only I will have access to it, but everybody can see and use it. I have created the ...
8
votes
4answers
13k views

Get @@SERVERNAME from linked server

This seems like a basic question but I can't find any answers out there - I need to be able to get the server name/instance etc. from a linked server. I've tried a couple of things: select <linked ...
8
votes
2answers
19k views

Help with SQL Server Error “ad Hoc access to OLE DB Provider 'Microsoft.ACE.OLEDB.12.0'”

So we have an interesting issue where users are receiving the following error when attempting to query a view in SQL Server 2008 R2: Msg 7415, Level 16, State 1, Line 1 Ad hoc access to OLE DB ...
8
votes
2answers
6k views

Kerberos authentication not working with Linked Servers in SQL Server 2012

I am setting up a DEV/TEST environment using 2 SQL Servers running SQL Server 2012 on Windows Server 2012. We are moving from SQL Server 2005 on Windows Server 2008, where we already have this up-and-...
7
votes
2answers
24k views

SQL SERVER - Linked Server and query performance

I have a performance problem related to SQL Server/linked servers/views. I hope you can help me understand what is the best way to do what I want =). I have a database K with 3 linked servers L1,L2,...
7
votes
1answer
26k views

Local login impersonation not working with a linked server

I have created a linked server on my server using the following: exec sp_addlinkedserver @server=N'MyOldDB', @srvproduct=N'', @provider = N'SQLNCLI', @datasrc=N'MYSERVER', @...
7
votes
1answer
1k views

Where do Linked Server Queries get executed?

I have two instances ServerA and ServerB, and I have created a linked server in ServerA for ServerB as Linksrv_B. I can execute a query on ServerA using the four part naming convention: SELECT * ...
7
votes
1answer
6k views

SQL Server --> Informix DB Linked Server

After about 3 days of trying, I am unable to create a linked server from SQL Server 2016 to Informix 11.5. I haven't tried this with other versions (2008R2, etc) since I wanted to set up the ...
7
votes
1answer
750 views

Is there a way to DENY CRUD operations on connections from linked server?

I have a SQL Server instance, RPT1 (2008 R2), that was set up for "power users" to run their own queries. This server is linked to our production reporting server, PRD1 (SQL Server 2008 instance), ...
7
votes
3answers
4k views

How does “Be made using the login's current security context” pass the users password to remote server

Say you have a SQL Server with a "Linked Server" to another server - said "Linked Server" is set to use "Be made using the login's current security context" as its authentication model. How does the ...
7
votes
1answer
15k views

Communication link failure for some queries to linked server

I am seeing the following error in SSMS (server has Windows Server 2008 and Microsoft SQL Server 2008 R2 (RTM) - 10.50.1600.1 installed) when running some queries against the linked server, in ...
7
votes
1answer
3k views

Query External LDAP Server from SQL Server

I have done extensive research on querying LDAP Server but so far has not been able to work around. Therefore, asking experts help Background: I have a client whose LDAP Server is OnPremise (though ...
7
votes
1answer
2k views

selecting more fields causes catastrophic failure

I have a connection to a linked server from sql server 2012 to pervasive sql. When I do select field1, field2, field3 from mytable everything works! However, when I do select field1, field2, field3, ...
6
votes
4answers
28k views

Linked Server to SQL Server 2000 server from SQL Server 2012

I have a new SQL Server 2012 instance, and am migrating a database from SQL Server 2000. Some of the stored procedures in the DB I am moving reference another database back on that 2000 server. What ...
6
votes
1answer
2k views

SQL Server: Using 4 part identifiers when database may be on the same server

In my client's setup, the database servers in lower environments are all on one server for cost saving purposes, but in higher environments, these databases are deployed on separate servers, and ...
6
votes
1answer
7k views

Security implications disabling promotion of distributed transaction for linked server

I've a a linked server and I need to run the following statement: INSERT INTO...EXEC linkedserver.sp @parameter Both servers SQL Server 2008R2 SP1. Once I run it I get this error: Msg 7391, Level ...
6
votes
2answers
42k views

Query two SQL Server databases on two different servers

Suppose I have two database servers (DB-SERVER-1 & DB-SERVER-2), and there is a single database on each server (DB1 & DB2). Both are SQL Server databases. Is it possible to query both ...
6
votes
2answers
11k views

Access Linked Server error “The provider did not give any information about the error.”

A little information. I'm running SQL SERVER 2008 R2 64bit. I have Microsoft.ACE.OLEDB.12.0 provider installed. On my production server I've setup a linked server to the access db using the provider ...
6
votes
2answers
1k views

Is there a way to setup a user to run SPs, but not access the underlying data tables?

We have two database instances on two separate server boxes that are linked. The website user needs to be able to run stored procedures on DatabaseA which query DatabaseB tables, however it should not ...
6
votes
1answer
4k views

Performance difference between SQL Server Linked Server and direct query

A Management Studio query pane connected directly to a remote sql server executes and displays a simple table query of (SELECT * FROM table) in just under 2 seconds. The same Management Studio but ...
5
votes
3answers
8k views

What's the difference between Linked Server solution and SSIS solution?

When I want to move data between two databases (e.g source: Oracle, destination: SQL Server), I think I have two options: Linked Server and SQL Server Integration Services. But is there any benefit ...
5
votes
1answer
528 views

Creating Stored Procedure in local db that references tables in linked server

I currently have a local server linked to a remote server. Is it possible to create a stored procedure within the local server, but querying data from tables within the linked server. I am aware ...
5
votes
4answers
22k views

Missing DB on linked server

So there is a linked server. However, I am not currently able to view all databases associated with that linked server from within SSMS after expanding the catalog dropdown. It is my understanding ...
5
votes
2answers
1k views

Linked Server to Azure Error: “Access to the remote server is denied because no login-mapping exists.”

I'm setting up a linked server from an on-prem SQL Server to a database on MS Azure (see below). When non-admin users query the Azure database via the linked server they get: Msg 7416, Level 16, ...
5
votes
1answer
2k views

SQL Server ; working around collation mismatches

Imagine the following scenario: I have two servers which are on two separate private networks. A linked server has been created, and there is a table in server A which has an updated version of the ...
5
votes
1answer
17k views

Linked Server from SQL Server to SSAS not working - what is missing?

I have a SQL Server 2012 Standard edition sp1 that has ssas also installed. From this server I create a linked server to a ssas server called BIREPLON1, but when I try to access it, I get the error ...
5
votes
2answers
61k views

How can I enable distributed transactions for a linked server?

I have a SQL Server 2012 instance with a linked server pointing to a db2 database on an IBM Iseries system using the System i Access ODBC Driver. I'm trying to enable distributed transactions. I ...
5
votes
1answer
5k views

SQL Server OPENQUERY vs Regular Query against AS400

I log into a SQL Server database which has an AS400 server as a linked server. I've discovered that running queries against this AS400 server is MUCH faster if I run the select in an OPENQUERY... ...
5
votes
1answer
76 views

how to stop using sql server login credentials in a linked server?

I have a linked server based in Italy server_italia that connects to a server based in Oregon USA ORDB1 we are on different but trusted domains. The connection from server_italia to ORDB1 is made ...
5
votes
2answers
3k views

Run a PowerShell script on a different server - from inside a SQL Server job

I have a procedure to backup SSAS Databases. That is working as a charm. Now my server is filling up with SSAS backups and I would like to delete the backup files that are older than 2 days. to ...
5
votes
2answers
2k views

SQL Server Linked Servers and Remote Statistics

I'm trying to get a better understanding of how SQL Server uses statistics on remote SQL Servers (e.g. a Linked Server). I understand that the user needs db_owner/db_ddladmin rights to be able to use ...
5
votes
1answer
2k views

Slow SQL Server query using a DB2 linked server in virtual environment

I have a problem with a slow query which uses a linked server. Let me list out my environment first and I'll get to the issue: Virtual Windows 2003 R2 server (fresh deployments on XenServer 6.1 & ...
5
votes
4answers
12k views

SQL Server update query on linked server causing remote scan

I have a SQL Server 2012 setup as a linked server on a SQL Server 2008 server. The following queries executes in less than 1 second: SELECT kg.IdGarment FROM Products p INNER JOIN ...
5
votes
1answer
752 views

TLS 1.2 breaks SQL Server linked servers

As part of a recent security blitz we set up TLS 1.2 on all of our servers. Last night I flipped the "Force Encryption" flag on all of our SQL Servers and since then I've had a weird issue with linked ...
5
votes
1answer
2k views

Slow Linked Server INSERTs on SQL Server 2014

My local and remote servers were all using SQL Server 2008 R2 but the local ones were recently upgraded to SQL Server 2014 and the performance of Remote Queries has been crippled (literally from ...