AlwaysOn

Find the list of articles, tips & tricks about SQL Server AlwaysOn. Read from basics to advanced configuration steps. You will get troubleshooting tips to fix the AlwaysOn issues in this section.

Fix Always ON Connection Timeout Error 35206 in SQL Server

Recently, my company has migrated all critical SAP systems from on prem Linux based Oracle databases to Azure Cloud windows…

How to Change Session Timeout for Availability Group Replica

Sometimes we get alwayson connection timeout errors on availability group replicas. Always on Connection timeout or alwayson session timeout is…

How to Add Data File to Availability Database?

Sometimes, we need to add data file to availability database in Always on Availability Group. Adding database file is a…

What is Enhanced Database Failover and How to Enable it for Availability Group?

As we know Always on Availability Group is the set of user databases that are combined to failover if primary…

Upgrade or Patch SQL Server Failover Cluster Instance Running with Availability Group

I have explained step by step process to upgrade or patch SQL Server instance that hosts an Always on Availability…

How to Change Failover Mode of Availability Replica in Always On Availability Group?

Today, i will describe about the overview of failover modes in AOAG and how to Change failover mode of an…

Fix Error 1418: The server network address cannot be reached or does not exist.

We got error 1418 while configuring Database Mirroring on one of the SQL Server database instance. The error details are…

SQL Server Alwayson Interview Questions & Answers

I have published SQL Server Interview Questions and Answers on many topics. Visit attached link to get All SQL Server…

How to Upgrade or Patch Alwayson Availability Group Instances?

If you are planning to upgrade your SQL Server instance that hosts an Always on Availability Group (AOAG) to a…

Restore a Database Participating in Alwayson Availability Group

Sometimes, we need to restore a database that is part of always on availability group to fulfill our business needs.…

How to Add a New Database to Always On Availability Group?

Adding or Removing databases from availability group is not day to day task but we need to perform such activities…

How to Remove Database from Always On Availability Group?

This article describes how to remove availability database(s) from an Always on Availability Group by using SQL Server Management Studio…

SQL Server Alwayson Error 35250: Joining database on Secondary Replica resulted in an error

We got this Microsoft SQL Server error 35250 while configuring Alwayson Availability Group on one of the SQL Server Instance.…

Fix AOAG Listener Error 19471: Kerberos Status is Showing The handle is Invalid

I was configuring AlwaysOn Availability Group between two replicas. Everything was configured successfully but Listener was failed to create with…

Understanding Backup Preferences for AlwaysOn Availability Group Databases

We know SQL Server Backups are resource intensive operation that strain on I/O and CPU (with backup compression). AlwaysOn Availability…