Always On

Technical Article

Enable TDE for Databases in a SQL Server AlwaysOn Availability Group

  • Article

A customer has a database that is already set up in a SQL Server Availability Group. Since this database hosts sensitive data, there is a need to encrypt the primary and all secondary replicas of the data. In this article, we will walk through how this can be done.

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2025-08-13

SQLServerCentral Article

Add a Second NIC for an Availability Group to Separate Network Traffic

  • Article

Introduction Sometimes we face the scenario in an enterprise environment that the database in SQL Server Always On Availability Group (AOAG) has high concurrency read and write access from application servers. If we keep using the one network interface card for both network traffic of database connections from application servers and database mirroring between AOAG […]

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2025-09-01 (first published: )

6,355 reads

Technical Article
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2022-02-22 (first published: )

7,976 reads

Technical Article

Always On Availability Groups Troubleshooting and Monitoring Guide

  • Article

This guide helps you get started on troubleshooting some of the common issues in AlwaysOn Availability Groups and monitoring AlwaysOn Availability Groups. It is intended to provide original content as well as a landing page of useful information that is already published elsewhere.

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2024-01-09 (first published: )

SQLServerCentral Article

A Step by Step Guide to the Availability Group (AG) Listener

  • Article

Availability databases hosted on SQL Server Always On Availability Groups (AG) can be connected using a unique Virtual Network Name (VNN), called the Availability Group Listener. When an Availability Group is enabled, clients can connect to databases in both primary and secondary replicas without explicitly specifying the SQL Server instance name. You don’t even need […]

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2021-05-17

10,817 reads

SQLServerCentral Article

Configuring Availability Groups in Ubuntu

  • Article

In this article, we will review how to configure Always On Availability Groups in Ubuntu Server using the Pacemaker cluster. The following are the high-level steps to configure Always On Availability Groups (AOAG) with an Ubuntu server. Install SQL Server on Ubuntu 16.04 Install Pacemaker agents and configure the cluster Create Always On Availability Groups Create […]

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2020-08-25

3,720 reads

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Split Large Queries in Athena with a Simple Modulo Trick

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Finding Trailing Spaces

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Question of the Day

Finding Trailing Spaces

I have some data in a SQL Server 2025 database. It looks like this for the dbo.Customer table:

CustomerID CustomerName PreferredName
1          Steve        Steve               
2          Andy         Andy               
3          Brian        Brian               
4          Allan        Allan               
5          Devin        Devin               
6          Steve        Steve               
7          Sally        Sally
I want to detect which names have a single trailing space. The CustomerName is a varchar() and the PreferredName is a CHAR(). Does this query detect the problem rows?
SELECT 
       CustomerID,
       CustomerName,
       PreferredName
FROM Customer
WHERE CustomerName <> RTRIM(CustomerName)
OR PreferredName <> RTRIM(PreferredName);

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