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- Upgrade availability group replicas - SQL Server Always On
Mixing versions of SQL Server instances in the same AG is not supported outside of a rolling upgrade and should not exist in that state for extended periods of time as the upgrade should take place quickly
- Common Causes and Troubleshooting Solutions for SQL AG Data . . .
This article summarizes the common causes , solutions and troubleshooting mechanism for SQL Availability Group (AG) data synchronization latency between primary and secondary for both synchronous-commit and asynchronous-commit mode
- Getting Maximum Performance From Always On Availability Groups
This blog post will explore some of the considerations and look at how to plan, architect, and implement an AG with minimal latency and performance impact on the production workload
- Measuring Availability Group synchronization lag - SQL Shack
When using Availability Groups (AGs), your RTO and RPO rely upon the replication of transaction log records between at least two replicas to be extremely fast The worse the performance, the more potential data loss will occur and the longer it can take for a failed over database to come back online
- SQL Always On Secondary replica limitations - Stack Overflow
The version of the SQL Server is important but you need to pay attention to the edition, too There are some major differences between SQL Server editions and I will advice always to refer the official docs for answering such questions by yourself
- Replication, change tracking, change data capture - Always On . . .
Learn about the interoperability of replication, change tracking, and change data capture when used with SQL Server Always On availability groups
- Troubleshooting data movement latency between synchronous-commit . . .
So now you have an overall picture about the log block movement between synchronous-commit mode replicas, and you know where is the latency (if any) from, replicas, network, or disk (log harden) or others
- sql server - Whats the cause for an AlwaysOn AG Secondary Replica to . . .
SQL14 is the Primary server, SQL16 is the Secondary Replica, and they're setup using synchronous commit availability mode: As of yesterday it appeared that data stopped synchronizing from the primary to the replica
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