CODEWITHSUNDEEP
sql-serverisolation-levelread-committed-snapshot
Chris Driver
Chris Driver

Reputation: 2345

How to detect READ_COMMITTED_SNAPSHOT is enabled?

In Microsoft SQL Server, is there a way to detect whether a database has had its isolation level set via the T-SQL command ALTER DATABASE <database> SET READ_COMMITTED_SNAPSHOT ON;?

I cannot find a simple way to detect this in either T-SQL or via the Management Studio's GUI.

Upvotes: 152

Views: 141554

Answers (3)

Galwegian
Galwegian

Reputation: 42247

SELECT is_read_committed_snapshot_on FROM sys.databases 
WHERE name= 'YourDatabase'

Return value:

  • 1: READ_COMMITTED_SNAPSHOT option is ON. Read operations under the READ COMMITTED isolation level are based on snapshot scans and do not acquire locks.
  • 0 (default): READ_COMMITTED_SNAPSHOT option is OFF. Read operations under the READ COMMITTED isolation level use Shared (S) locks.

Upvotes: 228

MikeL
MikeL

Reputation: 71

  1. As per DBCC USEROPTIONS (Transact-SQL):

DBCC USEROPTIONS reports an isolation level of 'read committed snapshot' when the database option READ_COMMITTED_SNAPSHOT is set to ON and the transaction isolation level is set to 'read committed'. The actual isolation level is read committed.

  1. Also in SQL Server Management Studio, in database properties under Options->Miscellaneous there is "Is Read Committed Snapshot On" option status

Upvotes: 5

user3164106
user3164106

Reputation: 17

Neither on SQL2005 nor 2012 does DBCC USEROPTIONS show is_read_committed_snapshot_on:

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

Upvotes: 0

Related Questions