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Stuck Oldest unsent transaction in db mirroring



The Next CEO of Stack OverflowTransaction Log and mirroring - looking for dumbest explanation possibleWhat can cause a mirroring session to timeout then failover?Resuming Replication w/ Database Mirroring when Principle is unavailableHow do I shrink the physical Transaction Log file when it's the principal in a mirror?SQL Server 2016 - MirroringUnsent log behaviour in database mirroringWaiting Tasks on MirrorSQL Mirroring Message “The mirroring connection to ”address“ has timed out for database ”database"Transaction log filling the drive if mirroring failsmirroring issue












1















I am seeing some very strange behavior in db mirroring



For one of the databases, during the weekend when rebuild index job ran on the principal, it generated around 60 GB log.



Now its been 2 days and mirroring is not in sync. ON mirror it always showing synchronizing and seems to be DC in between.



When i monitor further i see oldest unsent transaction is always stuck at 2:10:07:20 and increasing with time while unrestored log starts with 60 GB goes to 0 and then starts showing again with 60 GB still pending.



Update@



I see couple of times every 5 min there is a Disconnected state logged in Mirroring_state column



Can someone please guide what can be an issue here and what to check?










share|improve this question





























    1















    I am seeing some very strange behavior in db mirroring



    For one of the databases, during the weekend when rebuild index job ran on the principal, it generated around 60 GB log.



    Now its been 2 days and mirroring is not in sync. ON mirror it always showing synchronizing and seems to be DC in between.



    When i monitor further i see oldest unsent transaction is always stuck at 2:10:07:20 and increasing with time while unrestored log starts with 60 GB goes to 0 and then starts showing again with 60 GB still pending.



    Update@



    I see couple of times every 5 min there is a Disconnected state logged in Mirroring_state column



    Can someone please guide what can be an issue here and what to check?










    share|improve this question



























      1












      1








      1








      I am seeing some very strange behavior in db mirroring



      For one of the databases, during the weekend when rebuild index job ran on the principal, it generated around 60 GB log.



      Now its been 2 days and mirroring is not in sync. ON mirror it always showing synchronizing and seems to be DC in between.



      When i monitor further i see oldest unsent transaction is always stuck at 2:10:07:20 and increasing with time while unrestored log starts with 60 GB goes to 0 and then starts showing again with 60 GB still pending.



      Update@



      I see couple of times every 5 min there is a Disconnected state logged in Mirroring_state column



      Can someone please guide what can be an issue here and what to check?










      share|improve this question
















      I am seeing some very strange behavior in db mirroring



      For one of the databases, during the weekend when rebuild index job ran on the principal, it generated around 60 GB log.



      Now its been 2 days and mirroring is not in sync. ON mirror it always showing synchronizing and seems to be DC in between.



      When i monitor further i see oldest unsent transaction is always stuck at 2:10:07:20 and increasing with time while unrestored log starts with 60 GB goes to 0 and then starts showing again with 60 GB still pending.



      Update@



      I see couple of times every 5 min there is a Disconnected state logged in Mirroring_state column



      Can someone please guide what can be an issue here and what to check?







      sql-server sql-server-2016 mirroring






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 2 mins ago







      BeginnerDBA

















      asked 6 hours ago









      BeginnerDBABeginnerDBA

      5811417




      5811417






















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