Questions tagged [availability-group]

35 questions
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SQL Server AlwaysOn Availability Groups/Mirroring RPO and Availability

Is there any document clearly telling MAX RPO and Availability attained through SQL Server AlwaysOn Availability Groups/ Mirroring? i.e. 1 min and 99.99% like that?
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Restrict sys.databases view to connectable databases

How to restrict the results from sys.databases to available databases? We are changing to availability groups and replica server running on sql-server 2017. Before this I had a select statement running on master-database to see which datebases are…
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SOS_SCHEDULER_YIELD spike on Availability Group

I am about to lose my mind on this one. We have a 3 server availability group from which our applications read from all 3 servers. Runs great 99.9% of the time. Every now and then we get a spike in SOS_SCHEDULER_YIELD. When this happens a lot of…
SteveB
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SQL Server Sync Connection Usage

We're seeing very high waits for HADR_SYNC_COMMIT at times and after some diagnostic work with iperf3 and the like we think there might a network bandwidth problem. However we're not central sql staff we mostly do database tuning work so I just…
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SQL Server :: Replication Distribution Agent never ending

I'm running SQL Server 2019 Always ON Availability Group with an asynchronous replication. I use a free tool called IDERA SQL Check and I have spotted the SPID 69 which program name is Replication Distribution Agent. It's always there, staring at me…
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