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SQL SERVER – Mirroring Error 1456 – The ALTER DATABASE Command Could not be...
As a part of my consulting, I still get few clients who prefer to use database mirroring over Always On Availability Group. In this blog we would cover about one possible cause of database mirroring...
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SQL SERVER – AlwaysOn Automatic Seeding Failure – Failure_code 15 and...
Recently I wrote a blog explaining a situation where taking log backup can break automatic seeding and synchronization would not work. Below is the blog reference. SQL SERVER – AlwaysOn Automatic...
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SQL SERVER – Error: 1067 – Unable to Bring Analysis Service Online in Cluster
Even after working with many clients on various issues (Always On, Deployment, Performance Tuning) I always get new challenges as a part of my freelancing job. One thing I have learned is that one...
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SQL SERVER – Steps to Deploy Distributed Availability Group – Windows...
In the current era where companies’ mergers and take over is a common phenomenon, it is possible to run into a situation where there are two domains which are connected but not trusted. I was engaged...
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SQL SERVER – Parallel Redo on AlwaysOn Secondary – DIRTY_PAGE_TABLE_LOCK
As most of you might know that my expert area in SQL Server in performance tuning. But, I also deal with almost every issue related to SQL Server engine. Many times, it so happens then clients call me...
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SQL SERVER – Slow SQL Server 2016 Installation in Cluster:...
As a part of my AlwaysOn related consultancy, one of my clients was having challenges to install SQL Server 2016 in a clustered environment. In this blog, we would learn about the cause of Slow SQL...
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SQL SERVER – Always On Replica Disconnected After Changing SQL Server Service...
In my lab environment, I was testing a script to change service account and it worked fine. I had Always On configured on this SQL Server and soon I realized that after changing the SQL Server service...
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SQL SERVER – Install Error: Microsoft Cluster Service (MSCS) Cluster...
In recent past, I was assisting a client in installing SQL Server clustered instance in a Windows Cluster. There were many errors encountered and I learned a lot from this experience. In this blog, we...
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SQL SERVER – Database Mirroring Login Attempt Failed With Error: ‘Connection...
While Microsoft has introduced an AlwaysOn availability group feature in SQL Server 2012 and people have been using it instead of database mirroring. In this blog, we would learn how to fix error...
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SQL SERVER – Scripts to Overview HADR / AlwaysOn Local Replica Server
Today, I have received a very interesting script from SQL Server Expert Dominic Wirth. He has written a very helpful script which displays a utilization overview of the local availability group replica...
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SQL SERVER – Microsoft Azure – Unable to Find Higher Tier Series Virtual...
With current market trends of cloud shifting, many of my clients have moved their SQL Servers from on-premise virtual machines to Microsoft Azure Virtual Machines. In this blog, I would explain a...
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SQL SERVER – How to Fix log_reuse_wait_desc – AVAILABILITY_REPLICA?
Earlier this week I had multiple engagements of Comprehensive Database Performance Health Check. While working with one of the customers we realized that when we query sys.databases for one of the...
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SQL SERVER – Always On AG – HADRAG: Did not Find the Instance to Connect in...
During my On Demand (50 Minutes) consultancy, I solve the issue which seems quick to my client. SQL not starting, AlwaysOn not failing over, Cluster not working are few of quick things where my clients...
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SQL SERVER – Always On Secondary Replica Huge Redo Queue – Version Store is...
One of my earlier clients to whom I helped in configuration Always On Availability Group came back to me with strange behavior. In this blog, we would discuss error Version store is full. New...
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SQL SERVER – Unable to Create Always On Listener – Attempt to Locate a...
This is one of the common causes in Always On for which my clients contact me – “Unable to create listener”. In this blog we would learn about how to fix event Id 1212 – Attempt to locate a writeable...
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SQL SERVER – Always On Availability Groups and Full-Text Index
One of the most successful offerings from me has been Comprehensive Database Performance Health Check. Sometimes during my assistance, some random issues appear which I try to solve as well. In a...
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SQL SERVER – Cluster Resource ‘AGName’ of type ‘SQL Server Availability...
I never leave my customers alone when they are having an issue with something which I helped them. Typically, I help customers in creating POC and deploying AlwaysOn Availability Groups. Just the other...
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SQL SERVER – AlwaysOn – Queries Waiting for HADR_AR_CRITICAL_SECTION_ENTRY
In the past few days, I am being contacted by clients for AlwaysOn related issue. I have been writing a blog about them. In this blog, we would learn about how to fix wait for...
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SQL SERVER – FIX: Msg 41105: Failed to Create the Windows Server Failover...
Sometimes there are errors which give us the solution to the problem and I love to discover other ways to fix it. In this blog, we would learn how to fix Failed to create the Windows Server Failover...
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SQL SERVER – Always On Availability Group Listener Missing in SSMS but...
I have helped many customers to solve complex issues in their environment by Comprehensive Database Performance Health Check. Sometimes, the issue looks very complex but once the solution is found it...
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