¿Cómo supervisar el grupo de conexiones activo en SQL Server?

Question

Sospecho que mi aplicación web tiene fugas de conexión (obteniendo el tiempo de espera y la conexión máxima alcanzada). Así que quería controlar cuántas conexiones de bases de datos están activas en el grupo. Estoy usando SQL Express, por lo que no tengo el contador de rendimiento de User Connections como se sugiere en algunas guías de ayuda.

Encontré que también podía usar el servidor Performance Monitor of Win 2008 pero no tengo idea de cómo hacerlo. Cualquier guía sobre eso sería apreciada.

Answer 1

uso sencillo

SELECT * FROM sys.dm_exec_connections 

O

Probar y aprobar este script en el caso si usted necesita algunos otros datos

declare @now datetime 
set  @now = getdate() 
set nocount off 
select p.spid      as spid 
    , rtrim(p.loginame)   as SQLUser 
    , rtrim(p.nt_username)  as NTUser 
    , rtrim(p.nt_domain)   as NTDomain 
    , rtrim(case 
     when p.blocked <> 0 then 'BLOCKED' 
     else p.status 
     end)      as status 
    , case 
     when p.blocked is null or p.blocked = 0 then ''  
     else convert(varchar(10),p.blocked) 
     end       as BlockedBySpid 
    , rtrim(p.cmd)    as CurrentCommand 
    , case when p.dbid = 0 then '' else rtrim(db_name(p.dbid)) end as DBName 
    , isnull(rtrim(p.program_name),'')  as ProgramName 
    , cast(cast(p.waittype as int) as nvarchar(10)) as CurrentWaitType 
    , p.waittime    as CurrentWaitTime 
    , p.lastwaittype    as LastWaitType 
    , rtrim(p.waitresource)  as LastWaitResource 
    , p.open_tran     as OpenTransactionCnt 
    , p.cpu      as CPUTime 
    , convert(bigint, p.physical_io) as DiskIO 
    , p.memusage     as MemoryUsage 
    , p.hostprocess    as HostProcess 
    , rtrim(p.hostname)   as HostName 
    , p.login_time    as LoginTime 
    , p.last_batch    as LastBatchTime 
    , p.net_address    as NetAddress 
    , ltrim(rtrim(p.net_library)) as NetLibrary 
    , case 
     when lower(p.status) not in ('sleeping', 'background', 'dormant', 'suspended') 
     or  p.open_tran > 0 
     or  p.blocked > 0 
     or  upper(ltrim(rtrim(p.cmd))) like 'WAITFOR%' 
     then 'Y' 
     else 'N' 
     end       as Active 
    , case 
     when p.net_address <> '' -- Non system processes 
     and  p.program_name not like 'SQLAgent - %' 
     then 'N' 
     else 'Y' 
     end       as SystemProcess 
    , case 
     when p.last_batch = '19000101'  then 'n/a' 
     when datediff(day,  p.last_batch, @now) > 2 then convert(varchar(10),datediff(day,  p.last_batch, @now)) + ' days' 
     when datediff(hour,  p.last_batch, @now) >= 4 then convert(varchar(10),datediff(hour,  p.last_batch, @now)) + ' hrs' 
     when datediff(minute, p.last_batch, @now) >= 10 then convert(varchar(10),datediff(minute, p.last_batch, @now)) + ' min' 
     else convert(varchar(10),datediff(second, p.last_batch, @now)) + ' sec' 
     end       as TimeSinceLastBatch 
    , p.kpid      as InternalKPID 
    , case  
     when (lower(p.status) in ('background', 'dormant') 
     and  p.open_tran <= 0 
     and  p.blocked <= 0 
     and  upper(ltrim(rtrim(p.cmd))) not like 'WAITFOR%' 
     ) or (
     lower(p.status) like '%sleeping%' 
     ) 
     then 0 
     else p.kpid 
     end       as kpid 
    , (convert(nvarchar,p.spid) + '.' + case  
             when (lower(p.status) in ('background', 'dormant') 
             and  p.open_tran <= 0 
             and  p.blocked <= 0 
             and  upper(ltrim(rtrim(p.cmd))) not like 'WAITFOR%' 
             ) or (
             lower(p.status) like '%sleeping%' 
             ) 
             then '0' 
             else convert(nvarchar,p.kpid) 
             end) + '.' + convert(nvarchar,convert(float, p.login_time)) as SessionLifeTimeKey     
    , convert(float, p.login_time) as 'LoginTimeFloatDiff' 
from sys.sysprocesses   p with (readpast) 

Answer 2

Puede ejecutar una función de procedimiento almacenado

exec sp_who 
exec sp_who2 

Answer 3

Esto le dará el número de conexiones por la base de datos, por usuario:

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