Quickstart: Scale compute for dedicated SQL pools in Azure Synapse Workspaces with Azure PowerShell
You can scale compute for Azure Synapse Analytics dedicated SQL pools using Azure PowerShell. Scale out compute for better performance, or scale back compute to save costs.
If you don't have an Azure subscription, create a trial Azure account before you begin.
Note
This article applies to dedicated SQL pools created in Azure Synapse Analytics workspaces. This content does not apply to dedicated SQL pools (formerly SQL DW) or dedicated SQL pools (formerly SQL DW) in connected workspaces. There are different PowerShell cmdlets to use for each, for example, use Set-AzSqlDatabase
for a dedicated SQL pool (formerly SQL DW), but Update-AzSynapseSqlPool
for a dedicated SQL pool in an Azure Synapse Workspace. For similar instructions for dedicated SQL pools (formerly SQL DW), see Quickstart: Scale compute for dedicated SQL pools (formerly SQL DW) using Azure PowerShell.
For more on the differences between dedicated SQL pools (formerly SQL DW) and dedicated SQL pools in Azure Synapse Workspaces, read What's the difference between Azure Synapse (formerly SQL DW) and Azure Synapse Analytics Workspace.
Before you begin
Note
We recommend that you use the Azure Az PowerShell module to interact with Azure. See Install Azure PowerShell to get started. To learn how to migrate to the Az PowerShell module, see Migrate Azure PowerShell from AzureRM to Az.
This quickstart assumes you already have a dedicated SQL pool that was created in a Synapse workspace. If you need, Create an Azure Synapse workspace and then create a dedicated SQL pool using Synapse Studio.
Sign in to Azure
Sign in to your Azure subscription using the Connect-AzAccount command and follow the on-screen directions.
Connect-AzAccount -Environment AzureChinaCloud
To see which subscription you're using, run Get-AzSubscription.
Get-AzSubscription
If you need to use a different subscription than the default, run Set-AzContext.
Set-AzContext -SubscriptionName "MySubscription"
Look up data warehouse information
Locate the database name, server name, and resource group for the data warehouse you plan to pause and resume.
Follow these steps to find location information for your data warehouse.
Sign in to the Azure portal.
Search for Azure Synapse Analytics in the search bar of the Azure portal.
Select your Synapse workspace from the list.
Select SQL pools under Analytics pools in the menu list.
If you see the message
The dedicated pools listed below are hosted on the connected SQL Server
, your dedicated SQL pool (formerly SQL DW) is in a Connected workspace. Stop, and instead use the PowerShell examples in Quickstart: Scale compute for dedicated SQL pool (formerly SQL DW) with Azure PowerShell. Proceed for dedicated SQL pools created in a Synapse workspace.Select the name of your dedicated SQL pool from the Synapse workspace | SQL pools page. In the following samples, we use
contoso_dedicated_sql_pool
.As in the following image, we use
contoso-synapse-workspace
as the Azure Synapse workspace name in the following PowerShell samples, in the resource groupcontoso
.
For example, to retrieve the properties and status of a dedicated SQL pool created in a Synapse workspace:
Get-AzSynapseSqlPool -ResourceGroupName "contoso" -Workspacename "contoso-synapse-workspace" -name "contoso_dedicated_sql_pool"
To retrieve all the data warehouses in a given server, and their status:
$pools = Get-AzSynapseSqlPool -ResourceGroupName "resourcegroupname" -Workspacename "synapse-workspace-name"
$pools | Select-Object DatabaseName,Status,Tags
Scale compute
You can increase or decrease compute resources by adjusting the dedicated SQL pool's data warehouse units. The Workload management menu of the Azure portal provides scaling, but this can also be accomplished with PowerShell.
To change data warehouse units, use the Update-AzSynapseSqlPool PowerShell cmdlet. The following example sets the data warehouse units to DW300c for the database contoso_dedicated_sql_pool
, which is hosted in the resource group contoso
in the Synapse workspace contoso-synapse-workspace.
Update-AzSynapseSqlPool -ResourceGroupName "contoso" -Workspacename "contoso-synapse-workspace" -name "contoso_dedicated_sql_pool" -PerformanceLevel "DW300c"
The PowerShell cmdlet will begin the scaling operation. Use the Get-AzSynapseSqlPool
cmdlet to observe the progress of the scaling operation. For example, you will see Status
reported as "Scaling". Eventually, the pool will report the new Sku
value and Status
of "Online".
ResourceGroupName : contoso
WorkspaceName : contoso-synapse-workspace
SqlPoolName : contoso_dedicated_sql_pool
Sku : DW300c
MaxSizeBytes : 263882790666240
Collation : SQL_Latin1_General_CP1_CI_AS
SourceDatabaseId :
RecoverableDatabaseId :
ProvisioningState : Succeeded
Status : Scaling
RestorePointInTime :
CreateMode :
CreationDate : 2/21/2023 11:33:45 PM
StorageAccountType : GRS
Tags : {[createdby, chrisqpublic]}
TagsTable :
Name Value
========= =======
createdby chrisqpublic
Location : chinanorth3
Id : /subscriptions/abcdefghijk-30b0-4d4f-9ebb-abcdefghijk/resourceGroups/contoso/providers/Microsoft.Synapse/workspaces/contoso-synapse-workspace/sqlPools/contoso_dedicated_sql_pool
Type : Microsoft.Synapse/workspaces/sqlPools
Next steps
You have now learned how to scale compute for dedicated SQL pool in a Synapse workspace. To learn more about dedicated SQL pools, continue to the tutorial for loading data.
- To get started with Azure Synapse Analytics, see Get Started with Azure Synapse Analytics.
- To learn more about dedicated SQL pools in Azure Synapse Analytics, see What is dedicated SQL pool (formerly SQL DW) in Azure Synapse Analytics?
- Quickstart: Scale compute for an Azure Synapse dedicated SQL pool in a Synapse workspace with the Azure portal