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Job Management in an AlwaysOn WorldHow to handle jobs that need to run on the primary replica.
About Me…• Database Administrator at Boulder County
• Twitter: @_KenWilson
• Blog: SQLBama.com
• LinkedIn: https://www.linkedin.com/in/sqlbama
Ken Wilson
Agenda• Types of Jobs
• Job Failover Options
Job Types• Active X• Command Line• PowerShell
OS
• Command Jobs• Query JobsAnalysis Services
• Packages• Maintenance Plans
Integration Services
• Replication• T-SQL StatementsSQL Server
So What Are My Options• Add a job step
• Add a job server
• Move logic out of SQL Agent
• Use Alerts to enable/disable jobs
Adding a Job Step• Add top level job step.
• Use logic to detect primary
• Continue Processing
• Exit Gracefully
• Possible Issues Detection could be tricky
In 2012 you need to come up with the logic yourself
In 2014 and newer you can use the system function sys.fn_hadr_is_primary_replica
Misleading Error Log
• Active X• Command Line• PowerShell
OS
• Command Jobs• Query Jobs
Analysis Services
• Packages• Maintenance Plans
Integration Services
• Replication• T-SQL StatementsSQL Server
Add Job Server• Build a separate SQL Server
• Configure Job Server for Multi-Server Administration
• Point Jobs at target servers
• Possible Issues Initial Setup Cost
• Active X• Command Line• PowerShell
OS
• Command Jobs• Query Jobs
Analysis Services
• Packages• Maintenance Plans
Integration Services
• Replication• T-SQL StatementsSQL Server
Moving Logic• Move primary detection logic out of the
SQL Agent Job Works well with T-SQL Statements and
OS job types Examples: Ola Hallengren’s Maintenance
Solution and MidnightDBA’s Minion Backup Solution
• Possible Issues Need access to code Replication job types may be difficult to
setup.
• Active X• Command Line• PowerShell
OS
• Command Jobs• Query Jobs
Analysis Services
• Packages• Maintenance Plans
Integration Services
• Replication• T-SQL StatementsSQL Server
Using Alerts• Setup Alert on 1480 (AlwaysOn Role
Change)
• Setup Job to enable/disable other jobs
• Use the response of the alert to execute the disable/enable job.
• Possible Issues Initial Setup a little more involved False positives are possible
• Active X• Command Line• PowerShell
OS
• Command Jobs• Query Jobs
Analysis Services
• Packages• Maintenance Plans
Integration Services
• Replication• T-SQL StatementsSQL Server
To Recap…• No one right way to manage jobs
• Document, Document, Document
References• Michael Campbell’s Blog Series
http://sqlmag.com/blog/alwayson-availability-groups-and-sql-server-jobs-part-1-introduction
• SQL Agent Job Types https://msdn.microsoft.com/en-US/librAry/ms187056.aspx
• Minion Backup http://minionware.net/backup/
• Ola Halengren https://ola.hallengren.com/
Questions?
