Comment trouver le niveau de transaction actuel?

Question

Comment trouvez-vous le niveau de transaction de la base de données actuelle sur SQL Server?

Answer 1

Exécuter ceci:

SELECT CASE transaction_isolation_level 
WHEN 0 THEN 'Unspecified' 
WHEN 1 THEN 'ReadUncommitted' 
WHEN 2 THEN 'ReadCommitted' 
WHEN 3 THEN 'Repeatable' 
WHEN 4 THEN 'Serializable' 
WHEN 5 THEN 'Snapshot' END AS TRANSACTION_ISOLATION_LEVEL 
FROM sys.dm_exec_sessions 
where session_id = @@SPID 

Answer 2

Si vous parlez de la transaction en cours nichée niveau, alors vous utiliserez @@TRANCOUNT.

Si vous parlez de niveau isolement transaction , utilisez DBCC USEROPTIONS et chercher une option de niveau d'isolation . Si ce n'est pas le cas, c'est en lecture confirmée.

Answer 3

DECLARE @UserOptions TABLE(SetOption varchar(100), Value varchar(100)) 
DECLARE @IsolationLevel varchar(100) 

INSERT @UserOptions 
EXEC('DBCC USEROPTIONS WITH NO_INFOMSGS') 

SELECT @IsolationLevel = Value 
FROM  @UserOptions 
WHERE  SetOption = 'isolation level' 

-- Do whatever you want with the variable here... 
PRINT  @IsolationLevel 

Answer 4

SELECT CASE 
      WHEN transaction_isolation_level = 1 
      THEN 'READ UNCOMMITTED' 
      WHEN transaction_isolation_level = 2 
       AND is_read_committed_snapshot_on = 1 
      THEN 'READ COMMITTED SNAPSHOT' 
      WHEN transaction_isolation_level = 2 
       AND is_read_committed_snapshot_on = 0 THEN 'READ COMMITTED' 
      WHEN transaction_isolation_level = 3 
      THEN 'REPEATABLE READ' 
      WHEN transaction_isolation_level = 4 
      THEN 'SERIALIZABLE' 
      WHEN transaction_isolation_level = 5 
      THEN 'SNAPSHOT' 
      ELSE NULL 
     END AS TRANSACTION_ISOLATION_LEVEL 
FROM sys.dm_exec_sessions AS s 
     CROSS JOIN sys.databases AS d 
WHERE session_id = @@SPID 
    AND d.database_id = DB_ID(); 

Answer 5

il suffit d'exécuter DBCC useroptions et vous obtiendrez quelque chose comme ceci:

Set Option     Value 
--------------------------- -------------- 
textsize     2147483647 
language     us_english 
dateformat     mdy 
datefirst     7 
lock_timeout    -1 
quoted_identifier   SET 
arithabort     SET 
ansi_null_dflt_on   SET 
ansi_warnings    SET 
ansi_padding    SET 
ansi_nulls     SET 
concat_null_yields_null  SET 
isolation level    read committed