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sys.servers (Transact-SQL)

 

Applies To: SQL Server 2014, SQL Server 2016 Preview

Contains a row per linked or remote server registered, and a row for the local server that has server_id = 0.

Applies to: SQL Server (SQL Server 2008 through current version).

Column name

Data type

Description

server_id             

int

Local ID of linked server.

name             

sysname

When server_id = 0, this is the server name.

When server_id >0 , this is the local name of linked server.

product             

sysname

Product name of the linked server. "SQL Server" indicates this is another instance of SQL Server.

provider             

sysname

OLE DB provider name for connecting to linked server.

data_source             

nvarchar(4000)

OLE DB data source connection property.

location             

nvarchar(4000)

OLE DB location connection property. NULL if none.

provider_string             

nvarchar(4000)

OLE DB provider-string connection property.

Is NULL unless the caller has the ALTER ANY LINKED SERVER permission.

catalog             

sysname

OLEDB catalog connection property. NULL if none.

connect_timeout             

int

Connect time-out in seconds, 0 if none.

query_timeout             

int

Query time-out in seconds, 0 if none.

is_linked             

bit

0 = Is an old-style server added by using sp_addserver, with different RPC and distributed-transaction behavior.

1 = Standard linked server.

is_remote_login_enabled             

bit

RPC option is set enabling incoming remote logins for this server.

is_rpc_out_enabled             

bit

Outgoing (from this server) RPC is enabled.

is_data_access_enabled             

bit

Server is enabled for distributed queries.

is_collation_compatible             

bit

Collation of remote data is assumed to be compatible with local data if no collation information is available.

uses_remote_collation             

bit

If 1, use the collation reported by the remote server; otherwise, use the collation specified by the next column.

collation_name             

sysname

Name of collation to use, or NULL if just use local.

lazy_schema_validation             

bit

If 1, schema validation is not checked at query startup.

is_system             

bit

This server can be accessed only by the internal system.

is_publisher             

bit

Server is a replication Publisher.

is_subscriber             

bit

Server is a replication Subscriber.

is_distributor             

bit

Server is a replication Distributor.

is_nonsql_subscriber             

bit

Server is a non-SQL Server replication Subscriber.

is_remote_proc_transaction_promotion_enabled

bit

If 1, calling a remote stored procedure starts a distributed transaction and enlists the transaction with MS DTC. For more information, see sp_serveroption (Transact-SQL).

modify_date             

datetime

Date that server information was last changed.

The value in provider_string is always NULL unless the caller has the ALTER ANY LINKED SERVER permission.

Permissions are not required to view the local server (server_id = 0).

When you create a linked or remote server, SQL Server creates a default login mapping to the public server role. This means that by default, all logins can view all linked and remote servers. To restrict visibility to these servers, remove the default login mapping by executing sp_droplinkedsrvlogin and specifying NULL for the locallogin parameter.

If the default login mapping is deleted, only users that have been explicitly added as a linked login or remote login can view the linked or remote servers for which they have a login. To view all linked and remote servers after the default login mapping is deleted requires the following permissions:

  • ALTER ANY LINKED SERVER or ALTER ANY LOGIN ON SERVER

  • Membership in the setupadmin or sysadmin fixed server roles

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