Surveiller l’utilisation de SQL Server

Afin de déterminer quels sont les utilisateurs qui monopolisent un serveur SQL Server il suffit d’utiliser la requête suivante :

SELECT
TOP 20
SPID, Blocked,
convert(varchar(10),db_name(dbid)) as Base,
CPU,
datediff(second,login_time, getdate())/60 as Minutes,
convert(float, cpu / datediff(second,login_time, getdate())) as PScore,
convert(varchar(16), hostname) as Hôte,
convert(varchar(20), loginame) as Login,
convert(varchar(50), program_name) as Programme
FROM master..sysprocesses
WHERE datediff(second,login_time, getdate()) > 0 and SPID > 50
ORDER BY PScore desc

Plus le PScore est élevé plus l’utilisation de la base est intensive.

De la même manière on peut déterminer les programmes les plus gourmands en observant la colonne BFactor lors de l’exécution de la requête suivante :

SELECT
convert(varchar(50), program_name) as Programme,
count(*) as CliCount,
sum(cpu) as CPUSum,
sum(datediff(second, login_time, getdate())) as SecSum,
convert(float, sum(cpu)) / convert(float, sum(datediff(second, login_time, getdate()))) as Score,
convert(float, sum(cpu)) / convert(float, sum(datediff(second, login_time, getdate()))) / count(*) as BFactor
FROM master..sysprocesses
WHERE spid > 50
GROUP BY
convert(varchar(50), program_name)
ORDER BY score DESC