1. Make SQL Server to talk you! Antonios Chatzipavlis Software Architect, Development Evangelist, IT Consultant MCT, MCITP, MCPD, MCSD, MCDBA, MCSA, MCTS, MCAD, MCP, OCA MVP on SQL SERVER

2. 2 Objectives SQL Server Agent Alert System Event Notifications

3. 3 What Is an Alert? Predefined response to an event Triggered by jobs, performance conditions, or application log events Can notify an operator or start a specified job

4. 4 Create an Alert Specify  Alert name  Condition (Event, WMI trigger, performance condition) that triggers the alert  Response – notify an operator, start a job Use SQL Server Management Studio or “sp_add_alert” EXEC dbo.sp_add_alert @name = N'Test Alert', @message_id = 55001, @severity = 0, @notification_message = N'Error 55001 has occurred. The database will be backed up...', @job_name = N'Back up the AdventureWorks Database' ;

5. 5 Responding to Alerts Launch a Job  Use an existing job  Create a new job Notify an Operator  Schedule responders for different parts of the day or week  E-mail, pager, or net send Either Or

6. 6 DEMO Using Alerts

7. 7 Overview of Event Notifications Messages containing event data DDL Events Trace Events DML Events Database and Server Events Sent to an event processing service by using Service Broker A message type and contract are predefined You must create a queue, a service, and a route

8. 8 Creating Event Notifications 1.Define the Event Notification 2.Specify the Scope 3.Specify the Event 4.Specify the Service CREATE EVENT NOTIFICATION NotifyALTER_T1 ON DATABASE FOR ALTER_TABLE TO SERVICE '//Adventure-Works.com/ArchiveService', '8140a771-3c4b-4479-8ac0-81008ab17984';

9. 9 Processing Event Notifications 1.Receive the message 2.Extract event data by using XQuery DECLARE@messageTypeName NVARCHAR(256), @messageBody XML ;RECEIVE TOP(1) @messageTypeName = message_type_name, @messageBody = message_body FROM dbo.NotifyQueue; IF @@ROWCOUNT = 0 RETURN DECLARE @cmd nvarchar(1000) DECLARE @posttime nvarchar(24) DECLARE @spid nvarchar(6) SET @cmd = @messagebody.value ('(/EVENT_INSTANCE/TSQLCommand/CommandText)[1]', 'nvarchar(100)') SET @messagebody.value ('(/EVENT_INSTANCE/PostTime)[1]','nvarchar(24)') SET @spid =@messagebody.value ('(/EVENT_INSTANCE/SPID)[1]','nvarchar(6)')

10. 10 Managing Event Notifications 1.Viewing event notifications and queues 2.Deleting event notifications SELECT name FROM sys.event_notifications SELECT definition FROM sys.service_queues DROP EVENT NOTIFICATION UpdateStats ON SERVER

11. 11 DEMO Implementing Event Notifications

12. 12 Q & A

13. 13 My Blogs http://www.autoexec.gr/blogs/antonchhttp://www.autoexec.gr/blogs/antonch http://www.dotnetzone.gr/cs/blogs/antonchhttp://www.dotnetzone.gr/cs/blogs/antonch

14. 14 Thank you