mattmc3 / sp_ag_health

A SQL Server proc to put availability group (AG) health information at your fingertips.

sp_ag_health

sp_ag_health aims to be a one-stop-shop for getting information about the health of your SQL Server availability groups.

Installation

Run sp_ag_health.sql in your master database.

Usage

-- Basic usage
exec sp_ag_health

-- You can set different thresholds if the defaults are not right for your environment
exec sp_ag_health @alert_log_send_queue_threshold=200000, @alert_redo_queue_threshold=200000

-- You can set the columns you care about. A minus in front of @orderby_columns means sort desc
exec sp_ag_health
     @select_columns='alerts,database_name,ag_name,ag_replica_server,ag_replica_role,log_send_queue_size_kb,redo_queue_size_kb'
     ,@orderby_columns='-alerts,ag_name,-database_name'

Diagrams

Microsoft provides an overview of their system views. The "Always On" section highlights the following structure:

Here is a more detailed ERD with the fields from sp_ag_health flagged.

You can view even more detail here.

Notes

This proc is not 1.0 yet, and as such is subject to change! Changes may include:

• Columns (additional, datatypes, names, order, etc)
• Proc parameters (additional, names, order)
• Others changes as necessary for design, performance, features, and maintainability

Resources

• Get the Microsoft System Views Map here
• See Microsoft system view docs here and here