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Add jobs for monitoring AG
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‎Scripts/Job_AG_Failover_Detected.sql‎

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/*
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<documentation>
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<summary>Use this event to run a job when the replica becomes primary</summary>
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<returns>Create job to resume AG database data movement for suspended databases.</returns>
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<created>2020-08-06 by Wayne Sheffield</created>
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<version>1.0</version>
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<sourceLink>https://github.com/ktaranov/sqlserver-kit/blob/master/Scripts/Job_AG_Failover_Detected.sql</sourceLink>
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<originalLink>https://blog.waynesheffield.com/wayne/archive/2020/08/availability-group-issues-fixed-with-alerts/</originalLink>
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</documentation>
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*/
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/*
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Use this event to run a job when the replica becomes primary
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*/
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USE msdb;
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GO
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EXEC msdb.dbo.sp_add_alert @name=N'AG Failover Detected - Now Primary',
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@message_id=1480,
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@severity=0,
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@enabled=1,
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@delay_between_responses=0,
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@include_event_description_in=0,
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@event_description_keyword=N'"RESOLVING" to "PRIMARY"',
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@job_id=N'00000000-0000-0000-0000-000000000000';
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GO
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/*
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Use this event to run a job when the replica becomes secondary
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*/
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USE msdb;
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GO
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EXEC msdb.dbo.sp_add_alert @name=N'AG Failover Detected - Now Secondary',
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@message_id=1480,
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@severity=0,
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@enabled=1,
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@delay_between_responses=0,
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@include_event_description_in=0,
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@event_description_keyword=N'"RESOLVING" to "SECONDARY"',
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@job_id=N'00000000-0000-0000-0000-000000000000';
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GO

‎Scripts/Job_AG_Resume_Data_Movement.sql‎

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/*
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<documentation>
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<summary>Create job to resume AG database data movement for suspended databases.
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Create alert to catch when data movement has been suspended, and run the job
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</summary>
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<returns>Create job to resume AG database data movement for suspended databases.</returns>
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<created>2020-08-06 by Wayne Sheffield</created>
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<version>1.0</version>
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<sourceLink>https://github.com/ktaranov/sqlserver-kit/blob/master/Scripts/Job_AG_Resume_Data_Movement.sql</sourceLink>
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<originalLink>https://blog.waynesheffield.com/wayne/archive/2020/08/availability-group-issues-fixed-with-alerts/</originalLink>
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</documentation>
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*/
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USE msdb;
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GO
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BEGIN TRANSACTION;
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DECLARE @ReturnCode INT;
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SELECT @ReturnCode = 0;DECLARE @jobname sysname = N'AG - Resume Data Movement';
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DECLARE @categoryname sysname = 'HADR-Availability Group';
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IF EXISTS (SELECT name FROM dbo.sysjobs where name = @jobname)
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BEGIN
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EXECUTE msdb.dbo.sp_delete_job @job_name = @jobname;
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END;
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IF NOT EXISTS (SELECT name FROM msdb.dbo.syscategories WHERE name=@categoryname AND category_class=1)
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BEGIN
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EXECUTE @ReturnCode = msdb.dbo.sp_add_category @class=N'JOB', @type=N'LOCAL', @name=@categoryname;
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IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback;
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END;
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EXECUTE @ReturnCode = msdb.dbo.sp_add_job
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@job_name=@jobname,
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@enabled=1,
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@notify_level_eventlog=0,
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@notify_level_email=2,
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@notify_level_netsend=2,
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@notify_level_page=2,
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@delete_level=0,
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@description=N'Resume data movement on suspended Availability Group databases.
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This job can be run manually, or from an alert',
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@category_name=N'HADR-Availability Group',
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@owner_login_name=N'sa';
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IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback;
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EXECUTE @ReturnCode = msdb.dbo.sp_add_jobserver @job_name=@jobname, @server_name = N'(local)'
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IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback;
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EXECUTE @ReturnCode = msdb.dbo.sp_add_jobstep
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@job_name=@jobname,
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@step_name=N'Resume data movement in AG databases',
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@step_id=1,
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@cmdexec_success_code=0,
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@on_success_action=1,
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@on_fail_action=2,
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@retry_attempts=0,
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@retry_interval=0,
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@os_run_priority=0,
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@subsystem=N'TSQL',
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@command=N'DECLARE @SQLCMD VARCHAR(1000);
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DECLARE cDBSuspended CURSOR FOR
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SELECT ''ALTER DATABASE ['' + DB_NAME(database_id) + ''] SET HADR RESUME;''
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FROM sys.dm_hadr_database_replica_states drs
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JOIN sys.availability_replicas ar ON ar.replica_id = drs.replica_id
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WHERE ar.replica_server_name = @@SERVERNAME
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AND drs.is_suspended = 1;
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OPEN cDBSuspended;
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FETCH NEXT FROM cDBSuspended INTO @SQLCMD;
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WHILE @@FETCH_STATUS = 0
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BEGIN
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EXECUTE (@SQLCMD);
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FETCH NEXT FROM cDBSuspended INTO @SQLCMD;
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END;
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CLOSE cDBSuspended;
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DEALLOCATE cDBSuspended;
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',
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@database_name=N'master',
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@flags=0;
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IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback;
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EXECUTE @ReturnCode = msdb.dbo.sp_update_job
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@job_name=@jobname,
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@enabled=1,
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@start_step_id=1,
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@notify_level_eventlog=0,
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@notify_level_email=2,
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@notify_level_netsend=2,
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@notify_level_page=2,
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@delete_level=0,
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@description=N'Resume data movement on suspended Availability Group databases.',
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@category_name=N'HADR-Availability Group',
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@owner_login_name=N'sa',
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@notify_email_operator_name=N'',
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@notify_netsend_operator_name=N'',
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@notify_page_operator_name=N'';
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IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback;
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DECLARE @alertname sysname = N'AG Data Movement suspended';
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IF EXISTS (SELECT * FROM msdb.dbo.sysalerts WHERE name = @alertname)
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BEGIN
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EXECUTE @ReturnCode = msdb.dbo.sp_delete_alert @alertname;
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IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback;
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END;
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/*
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Alert text:
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AlwaysOn Availability Groups data movement for database '%.*ls' has been suspended for the following reason: "%S_MSG" (Source ID %d; Source string: '%.*ls'). To resume data movement on the database, you will need to resume the database manually. For information about how to resume an availability database, see SQL Server Books Online.
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*/
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EXECUTE @ReturnCode = msdb.dbo.sp_add_alert
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@name=@alertname,
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@message_id=35264,
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@severity=0,
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@enabled=1,
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@delay_between_responses=0,
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@include_event_description_in=0,
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@job_name = @jobname;
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IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback;
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COMMIT TRANSACTION;
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GOTO EndSave
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QuitWithRollback:
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IF (@@TRANCOUNT > 0) ROLLBACK TRANSACTION;
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EndSave:
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GO

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