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Running SQL Server Agent job on AlwaysOn Availability Groups

Antonios Chatzipavlis
Sunday 26 July 2015

Όσοι έχουν στο περιβάλλον τους έστω και ένα AlwaysOn Availability Group σίγουρα θα έχουν αναρωτηθεί πως να εκτελούν τις διάφορες εργασίες που θέλουν πάνω σε μια database που είναι σε Availability Group.

Υπάρχουν αρκετοί τρόποι, από τον απλούστερο μέχρι τον ποιό advanced και φυσικά αυτό που προτείνω για αυτό το θέμα.

Αντί να γράψω ένα μακροσκελές άρθρο για το συγκεκριμένο θέμα, επέλεξα να παρουσιάσω το θέμα με ένα web cast και στο post αυτό να σας δώσω το κώδικα που χρησιμοποίησα στο web cast.

Web Cast Video

Web Cast Code

-- Functions

USE master;
GO

IF OBJECT_ID('dbo.fn_hadr_IsPrimaryAG','FN') IS NOT NULL
        DROP FUNCTION dbo.fn_hadr_IsPrimaryAG
GO

CREATE FUNCTION dbo.fn_hadr_IsPrimaryAG (@AGName sysname) RETURNS bit 
AS
BEGIN 
    DECLARE @primary_replica sysname; 

    SELECT    @primary_replica = h.primary_replica 
    FROM    sys.dm_hadr_availability_group_states AS h
            INNER JOIN sys.availability_groups AS g ON g.group_id = h.group_id
    WHERE    g.name = @AGName;

    IF  ( UPPER(@primary_replica) =  UPPER(@@SERVERNAME) ) RETURN 1; 

    RETURN 0; 

END; 
GO



IF OBJECT_ID('dbo.fn_hadr_IsPrimaryDB','FN') IS NOT NULL
        DROP FUNCTION dbo.fn_hadr_IsPrimaryDB
GO

CREATE FUNCTION dbo.fn_hadr_IsPrimaryDB (@DBName sysname) RETURNS bit
AS
BEGIN

    DECLARE @role_desc sysname;
            
    SELECT    @role_desc =  h.role_desc
    FROM    sys.databases as d
            INNER JOIN    sys.dm_hadr_availability_replica_states as h ON d.replica_id = h.replica_id
    WHERE    database_id = DB_ID(@DBName);

    IF ( UPPER(@role_desc) = N'PRIMARY' ) RETURN 1;
    RETURN 0;

END;
GO

-- SQL Server 2012

SELECT dbo.fn_hadr_IsPrimaryAG('AG1');
SELECT dbo.fn_hadr_IsPrimaryDB('test');
GO
-- SQL Server 2014 and above

SELECT dbo.fn_hadr_is_primary_replica ('test');
GO

-- Code example

IF master.dbo.fn_hadr_IsPrimaryAG('AG1')=1
BEGIN
    PRINT 'This is the Primary the Availability Group';
END
ELSE
BEGIN
    PRINT 'This is NOT the Primary Availability Group';
END
GO

IF master.dbo.fn_hadr_IsPrimaryDB('test')=1
BEGIN
    PRINT 'This is the Primary Database in the Availability Group';
END
ELSE
BEGIN
    PRINT 'This is NOT the Primary Database in the Availability Group';
END
GO

-- Job code
USE test;
GO

IF ( master.dbo.fn_hadr_IsPrimaryAG('AG1')=1 ) AND ( master.dbo.fn_hadr_IsPrimaryDB('test')=1 )
BEGIN
    INSERT INTO T DEFAULT VALUES;
END
ELSE
BEGIN
    PRINT 'This is NOT the Primary Database in the Availability Group';
END

USE master;
GO

IF ( master.dbo.fn_hadr_IsPrimaryAG('AG1')=1 ) AND ( master.dbo.fn_hadr_IsPrimaryDB('test')=1 )
BEGIN
    INSERT INTO test.dbo.T DEFAULT VALUES;
END
ELSE
BEGIN
    PRINT 'This is NOT the Primary Database in the Availability Group';
END

-- Execute job sp
USE master;
go

IF OBJECT_ID('dbo.ExecuteSQLAgentJob','P') IS NOT NULL
        DROP PROC dbo.ExecuteSQLAgentJob;
GO
CREATE PROC dbo.ExecuteSQLAgentJob    (    @jobId uniqueidentifier, 
                                        @availabilityGroup sysname
                                    )  as
BEGIN

    DECLARE @jobname sysname = NULL;

    IF  master.dbo.fn_hadr_IsPrimaryAG('AG1') = 1
    BEGIN 
        SELECT @jobname = name FROM msdb.dbo.sysjobs WHERE job_id = @jobId;
        IF @jobname IS NOT NULL
        BEGIN 
            EXEC msdb.dbo.sp_start_job @jobname;
        END
        ELSE
        BEGIN
            SET @jobname = 'Job "'+@jobname+'" not found.';
            RAISERROR (@jobname,2,1);
        END
    END
    ELSE
    BEGIN
        PRINT 'This is not the primary replica.';
    END

END
GO

select * from msdb.dbo.sysjobs

select * from sys.objects

exec dbo.ExecuteSQLAgentJob '554BBDDA-AE6D-4275-8B9C-D603454C0BD0', 'AG1'


-- Enable jobs on HADR
USE master;
go

IF OBJECT_ID('dbo.EnableSQLAgentJobOnHADR','P') IS NOT NULL
        DROP PROC dbo.EnableSQLAgentJobOnHADR;
GO
CREATE PROC dbo.EnableSQLAgentJobOnHADR    ( @availabilityGroup sysname )  as
BEGIN

    DECLARE @jobname sysname = NULL;

    IF  master.dbo.fn_hadr_IsPrimaryAG(@availabilityGroup) = 1
        BEGIN 
            exec msdb..sp_update_job @job_id = '226776EF-5E19-40BA-8A7F-8B52D34D24CB', @enabled = 1;
        END    
    ELSE
        BEGIN 
            exec msdb..sp_update_job @job_id = '226776EF-5E19-40BA-8A7F-8B52D34D24CB', @enabled = 0;
        END
END
GO

-- Alerts

select * from sys.messages
where language_id=1033 and text like '%availability%';


Enjoy!

/*antonch*/

Antonios Chatzipavlis

Antonios Chatzipavlis

Antonios Chatzipavlis is a highly experienced Data Solutions Consultant and Trainer. He has been working in the IT industry since 1988, holding various roles such as senior developer, IT Manager, Data & AI Solutions Architect and Consultant.

Since 1995, Antonios has focused on modern technologies and software development tools, primarily by Microsoft. He has specialized in Data & AI since 2000, with expertise in Microsoft Data Platform (SQL Server, Azure SQL Databases, Azure Synapse Analytics, Microsoft Fabric, Power BI, AI) and Databricks.

Antonios is also a Microsoft Certified Trainer (MCT) for over 25 years, has been recognized as a Microsoft Most Valuable Professional (MVP) in Data Platform since 2010 and he is in the Data Expert 40 Powerlist 2024 by Boussias. He is the co-founder and visionary behind XLYTiCA, a company dedicated to Data & AI solutions.

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