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linked servers in SQL Server

Posted on 2014-04-10
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Last Modified: 2014-04-16
In a SQL server, where can you see what linked servers are configured, and under which account? For what reasons do people set up linked servers, and what are the risks associated with setting up a linked server via an account with high permissions? Is there a SQL Server that can query linked server settings?
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Question by:pma111
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jayakrishnabh earned 500 total points
ID: 39991895
Find the available linked servers under "Server Objects -> Linked Servers"
Linked servers are generally used to get the data from different server tables just like querying from different database of same server. If high permissions are given, delete or update of other database data is possible.

Query to find linked servers :
SELECT * FROM sys.servers WHERE is_linked = 1
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by:pma111
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Will the above query list which account is used in the link
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by:pma111
ID: 39992000
And are these links those which allow our users to access a remote server or vice versa allows remote users to access our server
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by:pma111
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Any views on the follow up questions?
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by:jayakrishnabh
ID: 39993684
Yes, access to remote server and vice versa is allowed. Account will not be listed in the query result.
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by:pma111
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So how can you tell which account is used for the link? There must be someway to tell?
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by:jayakrishnabh
ID: 39993890
Accounts used for the linked server can be found from the linkedserver properties window or create script of that
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