21 January 2020

Monitor Database Events

by SQL Monitor Team

3,200 0 Auditing, Security

Install metric...

Metrics install automatically if you have Redgate Monitor installed.

If you are using Redgate’s SQL Server monitoring tool, Redgate Monitor, you can instantly install and run this metric on your servers.

This metric queries data from an Extended Events session to detect databases being dropped, created, started, stopped, attached or detached. It assigns a configurable “anxiety index” value (an integer from 1-10) to each detected event and then calculates a total based on the occurrences of these events over a period.

First, create and start for the following Extended Events session on the monitored SQL Server instance:

CREATE EVENT SESSION [DatabaseEvents] ON SERVER 
ADD EVENT sqlserver.database_attached(
    ACTION(sqlserver.client_app_name,sqlserver.database_name,sqlserver.sql_text,sqlserver.username)),
ADD EVENT sqlserver.database_created(
    ACTION(sqlserver.client_app_name,sqlserver.database_name,sqlserver.sql_text,sqlserver.username)),
ADD EVENT sqlserver.database_detached(
    ACTION(sqlserver.client_app_name,sqlserver.database_name,sqlserver.sql_text,sqlserver.username)),
ADD EVENT sqlserver.database_dropped(
    ACTION(sqlserver.client_app_name,sqlserver.database_name,sqlserver.sql_text,sqlserver.username)),
ADD EVENT sqlserver.database_started(
    ACTION(sqlserver.client_app_name,sqlserver.database_name,sqlserver.sql_text,sqlserver.username)),
ADD EVENT sqlserver.database_stopped(
    ACTION(sqlserver.client_app_name,sqlserver.database_name,sqlserver.sql_text,sqlserver.username))
ADD TARGET package0.ring_buffer(SET occurrence_number=(60))
WITH (STARTUP_STATE=ON)
GO  
 ALTER EVENT SESSION DatabaseEvents ON SERVER STATE = START;

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CREATE EVENT SESSION [DatabaseEvents] ON SERVER

ADD EVENT sqlserver.database_attached(

ACTION(sqlserver.client_app_name,sqlserver.database_name,sqlserver.sql_text,sqlserver.username)),

ADD EVENT sqlserver.database_created(

ACTION(sqlserver.client_app_name,sqlserver.database_name,sqlserver.sql_text,sqlserver.username)),

ADD EVENT sqlserver.database_detached(

ACTION(sqlserver.client_app_name,sqlserver.database_name,sqlserver.sql_text,sqlserver.username)),

ADD EVENT sqlserver.database_dropped(

ACTION(sqlserver.client_app_name,sqlserver.database_name,sqlserver.sql_text,sqlserver.username)),

ADD EVENT sqlserver.database_started(

ACTION(sqlserver.client_app_name,sqlserver.database_name,sqlserver.sql_text,sqlserver.username)),

ADD EVENT sqlserver.database_stopped(

ACTION(sqlserver.client_app_name,sqlserver.database_name,sqlserver.sql_text,sqlserver.username))

ADD TARGET package0.ring_buffer(SET occurrence_number=(60))

WITH (STARTUP_STATE=ON)

GO

ALTER EVENT SESSION DatabaseEvents ON SERVER STATE = START;

For further details see: Checking for Database Events Using Extended Events and SQL Monitor.

Metric definition

Name

DatabaseEvents

Description

An anxiety level metric based on detection of databases being stopped, started, attached, detached, created or dropped. These actions should be unusual on a production server.

The T-SQL query that will collect data


		
			
			
Transact-SQL
			
			DECLARE @Target_Data XML =
            (
            SELECT TOP 1 Cast(xet.target_data AS XML) AS targetdata
              FROM sys.dm_xe_session_targets AS xet
                INNER JOIN sys.dm_xe_sessions AS xes
                  ON xes.address = xet.event_session_address
              WHERE xes.name = 'DatabaseEvents'
                AND xet.target_name = 'ring_buffer'
            );
SELECT COALESCE(Sum( CASE the.event_data.value('(@name)[1]', 'sysname') 
              WHEN 'database_started' THEN  1 --on a rating 1-10
              WHEN 'database_stopped' THEN 8  --on a rating 1-10
              WHEN 'database_attached' THEN 3 --on a rating 1-10
              WHEN 'database_detached' THEN 7 --on a rating 1-10
              WHEN 'database_created' THEN 4  --on a rating 1-10
              WHEN 'database_dropped' THEN 10 --on a rating 1-10
            END
          ),0)
    FROM @Target_Data.nodes('//RingBufferTarget/event') AS the(event_data)
  WHERE DateDiff (
          MINUTE, Convert(DATETIME2,
           SwitchOffset(
             Convert(DATETIMEOFFSET,
                     the.event_data.value('(@timestamp)[1]', 'datetime2')),
                     DateName(TzOffset,SysDateTimeOffset()))
          ), GetDate()) < 60 --AnxietyLevel is measured over a 60 minute span
			
				
					
				
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						DECLARE @Target_Data XML =
            (
            SELECT TOP 1 Cast(xet.target_data AS XML) AS targetdata
              FROM sys.dm_xe_session_targets AS xet
                INNER JOIN sys.dm_xe_sessions AS xes
                  ON xes.address = xet.event_session_address
              WHERE xes.name = 'DatabaseEvents'
                AND xet.target_name = 'ring_buffer'
            );
SELECT COALESCE(Sum( CASE the.event_data.value('(@name)[1]', 'sysname') 
              WHEN 'database_started' THEN  1 --on a rating 1-10
              WHEN 'database_stopped' THEN 8  --on a rating 1-10
              WHEN 'database_attached' THEN 3 --on a rating 1-10
              WHEN 'database_detached' THEN 7 --on a rating 1-10
              WHEN 'database_created' THEN 4  --on a rating 1-10
              WHEN 'database_dropped' THEN 10 --on a rating 1-10
            END
          ),0)
    FROM @Target_Data.nodes('//RingBufferTarget/event') AS the(event_data)
  WHERE DateDiff (
          MINUTE, Convert(DATETIME2,
           SwitchOffset(
             Convert(DATETIMEOFFSET,
                     the.event_data.value('(@timestamp)[1]', 'datetime2')),
                     DateName(TzOffset,SysDateTimeOffset()))
          ), GetDate()) < 60 --AnxietyLevel is measured over a 60 minute span

Instances to collect from

Default

Databases to collect from

master

Collection frequency

1 min

Use collected or calculated values

Leave the Use a calculated rate of change between collections check box unchecked

Metric collection

Enabled

Alert definition

The appropriate alert threshold depends on how often these events are likely to occur on your systems. You should set the alert threshold after establishing a baseline for your working instance.

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