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Queries to find out number connections to sql server

Queries to find out number connections to database server:

SELECT      
      DB_NAME(dbid) as DBName,
      COUNT(dbid) as NumberOfConnections,
      loginame as LoginName 
FROM
     sys.sysprocesses
WHERE      dbid > 0
GROUP BY  
    dbid , loginame  

Total number of connections to all servers:


SELECT
      COUNT(dbid) as TotalConnections 
FROM
     sys.sysprocesses
WHERE  
    dbid > 0 

For detailed description: 

sp_who2 'Active'
To see the max connections supported by the database server, use the following query:

 Select @@MAX_CONNECTIONS  

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