Tag: SQL Server High Availability
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Troubleshooting Database Mirroring Issues in SQL Server
Database Mirroring is deprecated, but you will still see it in many production environments. It was officially marked deprecated in SQL Server 2012 and has remained in that state for well over a decade. In my own career as a DBA, it has been “deprecated” the entire time, yet still widely deployed and fully supported.…
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Using PowerShell to Get Last SQL Failover Time
When reviewing availability events on SQL Server, one of the first questions is often: Did the cluster move, and when? This post shows how to use PowerShell to retrieve the last Windows Failover Cluster role movement for a SQL Server instance by querying cluster event logs. It’s a fast, reliable way to confirm node-level failovers…
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DBA Scripts: Check AG Replica Role and Synchronization State
🔧Part of the DBA-Tools Project, copy/paste SQL Server scripts and health checks.In: High Availability Is Every Replica Actually Ready to Take Over A failover just happened or the AG dashboard has gone red, and you need to know which replica is primary now and whether every secondary is connected and in sync. Run this on…
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DBA Scripts: Check Always On Availability Group Latency
🔧Part of the DBA-Tools Project, copy/paste SQL Server scripts and health checks.In: High Availability How Far Behind Is Each Database, Really A readable secondary is serving stale data, commits on the primary have slowed, or a failover is about to depend on a replica you have not checked. Run this on the primary: it returns…
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- How to Move TempDB Files in SQL Server
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- High Availability (HA) (12)
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- Security (Encryption & Permissions) (20)
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- T-SQL Fundamentals (15)
- Troubleshooting (94)
- Wait Types (235)