Is there such thing as an Availability Group failover trigger? Announcing the arrival of Valued Associate #679: Cesar Manara Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)Automatic Failover in Availability GroupAlwaysOn Availability Group Forced FailoverAlwaysOn Availability Group Automatic Failover does not workManual Failover with AlwaysOn availability groupAvailability Group failover stuck in Resolving StateQuestion Regarding Proper Failover to Asynch Server in Availability GroupPausing AlwaysOn Availability Group replication for failoverDistributed Availability Group Failover IssueConfiguring Availability group between Two SQL Server Failover Cluster InstancesSQL Server 2017 with 500 databases - Frequent AG disconnects since CU9

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Is there such thing as an Availability Group failover trigger?



Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)Automatic Failover in Availability GroupAlwaysOn Availability Group Forced FailoverAlwaysOn Availability Group Automatic Failover does not workManual Failover with AlwaysOn availability groupAvailability Group failover stuck in Resolving StateQuestion Regarding Proper Failover to Asynch Server in Availability GroupPausing AlwaysOn Availability Group replication for failoverDistributed Availability Group Failover IssueConfiguring Availability group between Two SQL Server Failover Cluster InstancesSQL Server 2017 with 500 databases - Frequent AG disconnects since CU9



.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;








4















Is there such thing as a trigger for Availability Group failovers?



I want a certain action to happen when an AG fails over. Specifically, I want to turn on a database setting (turning on RCSI). I want to do this on a failover in order to minimize disruption to 24/7 workloads and scheduled maintenance windows are hard to come by.



I know that sp_procoption can be used to mark procedures as startup procedures.
This seems like it could work for failover clusters, but not for Availability Groups.



I did consider adding an alert (sp_add_alert) on message_id=26069 in order to respond to failover actions with a sql agent job. But this seems less direct and in practice it seems slow










share|improve this question






















  • Is this a common thing others would want? Or is it just me?

    – Michael J Swart
    6 hours ago











  • Hmm, what’s the advantage of not having RCSI enabled on the secondary by default? Is it because of the additional versioning information? (If so I Wonder if this is actually a bad thing to not have slots for versioning in your existing rows)?

    – eckes
    4 hours ago











  • You can’t have different RCSI settings on primary and secondary. Any queries that read on the secondary node run under Snapshot isolation any way.

    – Michael J Swart
    3 hours ago











  • If you cannot have different settings I don’t understand what the trigger should do?

    – eckes
    3 hours ago











  • I wanted to change the setting during a failover. The timing was the important part. The change in the RCSI setting takes a small outage, so does the failover. I wanted one to happen at the same time as the other.

    – Michael J Swart
    1 hour ago

















4















Is there such thing as a trigger for Availability Group failovers?



I want a certain action to happen when an AG fails over. Specifically, I want to turn on a database setting (turning on RCSI). I want to do this on a failover in order to minimize disruption to 24/7 workloads and scheduled maintenance windows are hard to come by.



I know that sp_procoption can be used to mark procedures as startup procedures.
This seems like it could work for failover clusters, but not for Availability Groups.



I did consider adding an alert (sp_add_alert) on message_id=26069 in order to respond to failover actions with a sql agent job. But this seems less direct and in practice it seems slow










share|improve this question






















  • Is this a common thing others would want? Or is it just me?

    – Michael J Swart
    6 hours ago











  • Hmm, what’s the advantage of not having RCSI enabled on the secondary by default? Is it because of the additional versioning information? (If so I Wonder if this is actually a bad thing to not have slots for versioning in your existing rows)?

    – eckes
    4 hours ago











  • You can’t have different RCSI settings on primary and secondary. Any queries that read on the secondary node run under Snapshot isolation any way.

    – Michael J Swart
    3 hours ago











  • If you cannot have different settings I don’t understand what the trigger should do?

    – eckes
    3 hours ago











  • I wanted to change the setting during a failover. The timing was the important part. The change in the RCSI setting takes a small outage, so does the failover. I wanted one to happen at the same time as the other.

    – Michael J Swart
    1 hour ago













4












4








4








Is there such thing as a trigger for Availability Group failovers?



I want a certain action to happen when an AG fails over. Specifically, I want to turn on a database setting (turning on RCSI). I want to do this on a failover in order to minimize disruption to 24/7 workloads and scheduled maintenance windows are hard to come by.



I know that sp_procoption can be used to mark procedures as startup procedures.
This seems like it could work for failover clusters, but not for Availability Groups.



I did consider adding an alert (sp_add_alert) on message_id=26069 in order to respond to failover actions with a sql agent job. But this seems less direct and in practice it seems slow










share|improve this question














Is there such thing as a trigger for Availability Group failovers?



I want a certain action to happen when an AG fails over. Specifically, I want to turn on a database setting (turning on RCSI). I want to do this on a failover in order to minimize disruption to 24/7 workloads and scheduled maintenance windows are hard to come by.



I know that sp_procoption can be used to mark procedures as startup procedures.
This seems like it could work for failover clusters, but not for Availability Groups.



I did consider adding an alert (sp_add_alert) on message_id=26069 in order to respond to failover actions with a sql agent job. But this seems less direct and in practice it seems slow







sql-server






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked 7 hours ago









Michael J SwartMichael J Swart

1,06551229




1,06551229












  • Is this a common thing others would want? Or is it just me?

    – Michael J Swart
    6 hours ago











  • Hmm, what’s the advantage of not having RCSI enabled on the secondary by default? Is it because of the additional versioning information? (If so I Wonder if this is actually a bad thing to not have slots for versioning in your existing rows)?

    – eckes
    4 hours ago











  • You can’t have different RCSI settings on primary and secondary. Any queries that read on the secondary node run under Snapshot isolation any way.

    – Michael J Swart
    3 hours ago











  • If you cannot have different settings I don’t understand what the trigger should do?

    – eckes
    3 hours ago











  • I wanted to change the setting during a failover. The timing was the important part. The change in the RCSI setting takes a small outage, so does the failover. I wanted one to happen at the same time as the other.

    – Michael J Swart
    1 hour ago

















  • Is this a common thing others would want? Or is it just me?

    – Michael J Swart
    6 hours ago











  • Hmm, what’s the advantage of not having RCSI enabled on the secondary by default? Is it because of the additional versioning information? (If so I Wonder if this is actually a bad thing to not have slots for versioning in your existing rows)?

    – eckes
    4 hours ago











  • You can’t have different RCSI settings on primary and secondary. Any queries that read on the secondary node run under Snapshot isolation any way.

    – Michael J Swart
    3 hours ago











  • If you cannot have different settings I don’t understand what the trigger should do?

    – eckes
    3 hours ago











  • I wanted to change the setting during a failover. The timing was the important part. The change in the RCSI setting takes a small outage, so does the failover. I wanted one to happen at the same time as the other.

    – Michael J Swart
    1 hour ago
















Is this a common thing others would want? Or is it just me?

– Michael J Swart
6 hours ago





Is this a common thing others would want? Or is it just me?

– Michael J Swart
6 hours ago













Hmm, what’s the advantage of not having RCSI enabled on the secondary by default? Is it because of the additional versioning information? (If so I Wonder if this is actually a bad thing to not have slots for versioning in your existing rows)?

– eckes
4 hours ago





Hmm, what’s the advantage of not having RCSI enabled on the secondary by default? Is it because of the additional versioning information? (If so I Wonder if this is actually a bad thing to not have slots for versioning in your existing rows)?

– eckes
4 hours ago













You can’t have different RCSI settings on primary and secondary. Any queries that read on the secondary node run under Snapshot isolation any way.

– Michael J Swart
3 hours ago





You can’t have different RCSI settings on primary and secondary. Any queries that read on the secondary node run under Snapshot isolation any way.

– Michael J Swart
3 hours ago













If you cannot have different settings I don’t understand what the trigger should do?

– eckes
3 hours ago





If you cannot have different settings I don’t understand what the trigger should do?

– eckes
3 hours ago













I wanted to change the setting during a failover. The timing was the important part. The change in the RCSI setting takes a small outage, so does the failover. I wanted one to happen at the same time as the other.

– Michael J Swart
1 hour ago





I wanted to change the setting during a failover. The timing was the important part. The change in the RCSI setting takes a small outage, so does the failover. I wanted one to happen at the same time as the other.

– Michael J Swart
1 hour ago










2 Answers
2






active

oldest

votes


















5














No. Triggers are not at an instance or AG level. You'd need to base something on the failover event or better yet, as part of a SQL Server Agent job, just check to see if that replica is the primary and then do (or not do) something.






share|improve this answer










New contributor




Allan Hirt is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.



























    2














    I've done things like this before, but all I found available was the alerts. There's actually 2 different alerts, one that fires for each database in the AG, and another that fires when the entire AG fails over. So you have some flexibility.






    share|improve this answer























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      2 Answers
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      2 Answers
      2






      active

      oldest

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      active

      oldest

      votes






      active

      oldest

      votes









      5














      No. Triggers are not at an instance or AG level. You'd need to base something on the failover event or better yet, as part of a SQL Server Agent job, just check to see if that replica is the primary and then do (or not do) something.






      share|improve this answer










      New contributor




      Allan Hirt is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.
























        5














        No. Triggers are not at an instance or AG level. You'd need to base something on the failover event or better yet, as part of a SQL Server Agent job, just check to see if that replica is the primary and then do (or not do) something.






        share|improve this answer










        New contributor




        Allan Hirt is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
        Check out our Code of Conduct.






















          5












          5








          5







          No. Triggers are not at an instance or AG level. You'd need to base something on the failover event or better yet, as part of a SQL Server Agent job, just check to see if that replica is the primary and then do (or not do) something.






          share|improve this answer










          New contributor




          Allan Hirt is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
          Check out our Code of Conduct.










          No. Triggers are not at an instance or AG level. You'd need to base something on the failover event or better yet, as part of a SQL Server Agent job, just check to see if that replica is the primary and then do (or not do) something.







          share|improve this answer










          New contributor




          Allan Hirt is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
          Check out our Code of Conduct.









          share|improve this answer



          share|improve this answer








          edited 6 hours ago





















          New contributor




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          answered 6 hours ago









          Allan HirtAllan Hirt

          642




          642




          New contributor




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          New contributor





          Allan Hirt is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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          Allan Hirt is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
          Check out our Code of Conduct.























              2














              I've done things like this before, but all I found available was the alerts. There's actually 2 different alerts, one that fires for each database in the AG, and another that fires when the entire AG fails over. So you have some flexibility.






              share|improve this answer



























                2














                I've done things like this before, but all I found available was the alerts. There's actually 2 different alerts, one that fires for each database in the AG, and another that fires when the entire AG fails over. So you have some flexibility.






                share|improve this answer

























                  2












                  2








                  2







                  I've done things like this before, but all I found available was the alerts. There's actually 2 different alerts, one that fires for each database in the AG, and another that fires when the entire AG fails over. So you have some flexibility.






                  share|improve this answer













                  I've done things like this before, but all I found available was the alerts. There's actually 2 different alerts, one that fires for each database in the AG, and another that fires when the entire AG fails over. So you have some flexibility.







                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered 6 hours ago









                  Bob PusateriBob Pusateri

                  47926




                  47926



























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