I published a blog post on the Tiger blog on a recent change that was introduced for SQLVID. You can also use the SQL Server Backup Simulator which is available on our tigertoolbox GitHub repository for checking backup/restore behavior using SQLVDI APIs. The updated SQLVDI header files required to use VDC_Complete is available on the Microsoft SQL Server Samples GitHub repository.
Category Archives: SQL Server
SQL Saturday 572–Extended Events and Always On
This is the second year that I will be speaking at SQL Saturday at Portland. Last year I had talked about troubleshooting slow queries. This year I will talk about debugging SQL Server issues without having to use the debugger! As always, this will be an awesome prelude to the PASS Summit!
The event sees a great turnout with a number of data professionals talking about various topics. It’s a great opportunity to meet the SQL Server community and network with the folks that help you on the forums and social media. Also, you have a large number of experts under the same roof. So bring your questions.
Session Title: SQL Server Debugging Made Easy using Extended Events
Track: Enterprise Database Administration & Deployment
Time: 1.30PM – 2:45PM
This is a demo filled session that will show you how to debug several common issues in SQL server database engine and identify hotspots as well failures using only extended events. We will showcase how extended events make scenario based troubleshooting easier without having to collect disparate sets of diagnostic data, gather memory dumps and comprise on performance. There have been a plethora of Extended Events which have been added to SQL Server recently based on customer feedback which deprecates the need to run profiler in many commonly encountered situations in production environments. This session covers the new enhancements and capabilities available for Extended Events.
Understand the diagnostics enhancements in SQL Server database engine Use the diagnostics to troubleshoot and mitigate issues quickly in mission-critical environments Setup session templates proactively to reduce mitigation time during reactive situations.
I will also be delivering a lightning talk on Enhancements in SQL Server 2016 which will keep your SQL Server environment Always On.
A big thank you to the organizers for giving me the opportunity to speak at the event again and talk about the enhancements that the Tiger team is shipping!
SQL on Azure VM BPCheck
After a long hiatus, I am back on the blogosphere and have decided to dedicate a series to running Best Practices checks using PowerShell on Azure virtual machines running in the new deployment model: ARM (Azure Resource Manager). If you have worked on the classic deployment model, then you will need to unlearn a few things and re-learn a little more. However, the learning curve ain’t that great. Think of Azure Resource Manager as a container for all the cloud components that make up your solution. If you had a SQL Server instance running on an Azure virtual machine, then you would be using compute, networking, storage components in Azure which would together be encapsulated in a Resource Manager group.
I had previously done a series of posts around running best practices checks on Azure Virtual Machines running SQL Server. Some of those checks are still valid today as they only dealt with the SQL Server instance. You will see components of those scripts reused. Some of the checks are way easier due to the way ARM deployments are managed in Azure and the endpoints that the Azure PowerShell 1.0 exposes.
The PowerShell scripts available on the GitHub repository are mentioned below. I will run a post on each of these scripts to explain what each of these do and what to expect as the output of each of these scripts.
- Get-AllocationUnitCheck.ps1 – Checks if the allocation unit size for the disks attached to the VM is 64K
- Get-DBProperties.ps1 – Checks if any database has AUTO CLOSE or AUTO SHRINK enabled
- Get-FilesOnTemp.ps1 – Checks to see if any database files are hosted on the temporary drive
- Get-IFI.ps1 – Checks to see if the SQL Server service account has instant file initialization security privileges
- Get-LPIM.ps1 – Checks to see if Lock Pages in Memory privilege is granted to the SQL Server service account
- Get-OSFilesDB.ps1 – Checks to see if database files are hosted on the OS drive
- Get-StorageAccountBP.ps1 – Checks to see if the storage account has replication enabled
- Get-VMSize.ps1 – Checks if the right virtual machine tier is being used
- Temporary Drive.ps1 – Finds out the temporary drive on the virtual machine
- Get-Backups.ps1 – Finds out if any backups are being taken to local disk
The PowerShell scripts are available on GitHub repository SqlOnAzureVM. Since these scripts are now on GitHub, please feel free to pull them and enhance them as per your needs.
Exporting Data to a SQL Server on an Azure VM
If you have played around with a SQL Server installation on an Azure Virtual Machine, then you will invariably have the need to move a database from an on-premise environment to your Azure Virtual Machine for testing, deployment and a host of other activities which you are involved with on a regular basis at work!
Books Online has complete documentation on this wizard. In this post, we will attempt to understand what happens under the hood. Read on to find out more.
Azure SQL Database Export
In one of my previous posts I had talked about creating or rather restoring a deleted database backup. There is another option in preview called the automated export which allows you to create an automated export copy of your Azure SQL Database. The Azure SQL Database Import/Export Service is a REST-based web service that runs in every Microsoft Azure data center. The service provides a free request queuing service and a free Compute service to perform imports and exports from a Microsoft Azure SQL database to Microsoft Azure binary large object (BLOB) storage. The import and export operations are not a traditional physical database backup but a logical backup of the database that uses a special BACPAC format. This logical BACPAC format lets you avoid having to use a physical format that might vary between versions of SQL Server and SQL Database. Therefore, you can use it to safely restore the database to an SQL database and also to a SQL Server database.
As you can see from the screenshot, the Configure tab in the Azure Management portal for my Azure SQL Database, megatron, has an Export Status set to None.
As usual, this is a PREVIEW feature and the above is true as of today when I am writing this post. This functionality could change in the future.
Read on to find out what happens when I change the setting to Automatic… Is is as easy as 1-2-3?