Failover cluster server that is subscriber in trans. replication, possible to failover apps to server B in...












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Once in a while, I'll run into issues with my transactional replication when my publisher's schema changes. For example, sometimes we'll add new fields to one of the publisher tables, and then transactional replication will stop syncing (without warning) to the correlating subscriber table.



The fix for this in the past has been to force the publisher database to take a new snapshot and let it sync everything over again, which unfortunately takes a long time, and locks the subscriber tables causing major downage for applications that depend on the subscriber database. (The publisher database is from a vendor application - Dynamics AX - so I don't have a lot of flexibility here.)



We're planning on setting up a failover cluster via Always On AGs for our subscriber server (for other reasons) but I was curious if this could help mitigate the issue we experience with our replication.



For example, could the applications that depend on the subscriber database failover to the server B in the cluster while server A is locked up as my publisher (server C) is taking a new snapshot and syncing back down to server A?



(Note: We're currently running our servers on SQL Server 2008 R2 but will be upgrading to 2019 when we setup our failover cluster, so I tagged this accordingly.)









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    (Sorry for shotty title, max characters FTL.)



    Once in a while, I'll run into issues with my transactional replication when my publisher's schema changes. For example, sometimes we'll add new fields to one of the publisher tables, and then transactional replication will stop syncing (without warning) to the correlating subscriber table.



    The fix for this in the past has been to force the publisher database to take a new snapshot and let it sync everything over again, which unfortunately takes a long time, and locks the subscriber tables causing major downage for applications that depend on the subscriber database. (The publisher database is from a vendor application - Dynamics AX - so I don't have a lot of flexibility here.)



    We're planning on setting up a failover cluster via Always On AGs for our subscriber server (for other reasons) but I was curious if this could help mitigate the issue we experience with our replication.



    For example, could the applications that depend on the subscriber database failover to the server B in the cluster while server A is locked up as my publisher (server C) is taking a new snapshot and syncing back down to server A?



    (Note: We're currently running our servers on SQL Server 2008 R2 but will be upgrading to 2019 when we setup our failover cluster, so I tagged this accordingly.)









    share

























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      (Sorry for shotty title, max characters FTL.)



      Once in a while, I'll run into issues with my transactional replication when my publisher's schema changes. For example, sometimes we'll add new fields to one of the publisher tables, and then transactional replication will stop syncing (without warning) to the correlating subscriber table.



      The fix for this in the past has been to force the publisher database to take a new snapshot and let it sync everything over again, which unfortunately takes a long time, and locks the subscriber tables causing major downage for applications that depend on the subscriber database. (The publisher database is from a vendor application - Dynamics AX - so I don't have a lot of flexibility here.)



      We're planning on setting up a failover cluster via Always On AGs for our subscriber server (for other reasons) but I was curious if this could help mitigate the issue we experience with our replication.



      For example, could the applications that depend on the subscriber database failover to the server B in the cluster while server A is locked up as my publisher (server C) is taking a new snapshot and syncing back down to server A?



      (Note: We're currently running our servers on SQL Server 2008 R2 but will be upgrading to 2019 when we setup our failover cluster, so I tagged this accordingly.)









      share














      (Sorry for shotty title, max characters FTL.)



      Once in a while, I'll run into issues with my transactional replication when my publisher's schema changes. For example, sometimes we'll add new fields to one of the publisher tables, and then transactional replication will stop syncing (without warning) to the correlating subscriber table.



      The fix for this in the past has been to force the publisher database to take a new snapshot and let it sync everything over again, which unfortunately takes a long time, and locks the subscriber tables causing major downage for applications that depend on the subscriber database. (The publisher database is from a vendor application - Dynamics AX - so I don't have a lot of flexibility here.)



      We're planning on setting up a failover cluster via Always On AGs for our subscriber server (for other reasons) but I was curious if this could help mitigate the issue we experience with our replication.



      For example, could the applications that depend on the subscriber database failover to the server B in the cluster while server A is locked up as my publisher (server C) is taking a new snapshot and syncing back down to server A?



      (Note: We're currently running our servers on SQL Server 2008 R2 but will be upgrading to 2019 when we setup our failover cluster, so I tagged this accordingly.)







      sql-server availability-groups transactional-replication failover sql-server-2019





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      asked 7 mins ago









      J.D.J.D.

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