Method of creating linked server for cross server data access

SQL Database creation link service , It's not just SQL database , It's fine too Oracle other , This paper aims at SQL Operating instructions for

1. Temporary access across servers , Direct use OPENROWSET The way

 -- Example query statement 
 --select top 1 *from openrowset('SQLOLEDB',' service name ';' account number ';' password ', database .dbo. surface )a
 select top 1 *  
 from openrowset('SQLOLEDB','192.168.1.1';'sa';'111',TEST.dbo.TEST)a
 where NO ='1'

This query will prompt an error “ Tips ：SQL Server Blocking of components 'Ad Hoc Distributed Queries ' Of STATEMENT 'OpenRowset/OpenDatasource'”, Please refer to the solution of the targeted description in the next blog post .

Tips ：SQL Server Blocking of components ‘Ad Hoc Distributed Queries ‘ Of STATEMENT ‘OpenRowset/OpenDatasource“”_ Dili's favorite blog -CSDN Blog

2. Cross server data access , Create a linked server

2.1 Sentence creation

-- Cross server data access 
-- If you often visit or have a large amount of data , It is recommended to use a linked server 

-- Create a linked server 
-- The creation example is as follows 
--SQLOLEDB  The default is SQL database 
--SER_REMOTEERP  Get the service name for you , Can write 192.168.1.2  You can also choose any other 
-------------------------------------------------------------------

-- Create statement 
EXEC sp_addlinkedserver   'SER_REMOTEERP','','SQLOLEDB','192.168.1.2'
                                                -- Local user name , Remote service login , Password of remote service 
                                                -- For general creation  null  or SA
EXEC sp_addlinkedsrvlogin 'SER_REMOTEERP','false',null,'sa',' password '
EXEC sp_serveroption      'SER_REMOTEERP','rpc out','true'


-- Query statement 
select  top 1 * from  SER_REMOTEERP. Database name .dbo. Table name 

-- Delete linked Services 
EXEC sp_dropserver 'SER_REMOTEERP','droplogins'

If you encounter problems when creating ： There is no remote server ‘‘ Map to local users ‘(null)/sa‘ Remote users of ‘sa‘ And service master password decryption error ”, Then refer to my next blog to solve , Connect as follows

There is no remote server ‘‘ Map to local users ‘(null)/sa‘ Remote users of ‘sa‘ And service master password decryption error solution _ Dili's favorite blog -CSDN Blog

2.2 SQL Screen operation

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Enter the remote login account and password

 

 RFC and RFC OUT choice TRUE

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Test the connection to verify