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Serverless quotas

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Serverless quotas are a safety measure for serverless compute. Serverless quotas restrict how many serverless compute resources a customer can have at any given time. The quota is enforced at the regional level for all workspaces in your account. There are initial default quotas for accounts, but Databricks automatically proactively increases quotas based on your type of account and how you use Azure Databricks. Databricks intends for typical customers to not hit quotas limits in normal usage.

The quota is measured in Databricks Units (DBUs) per hour. A DBU is a normalized unit of processing power on the Databricks platform used for measurement and pricing purposes. See the pricing page.

Quotas are not intended as a capacity planning mechanism and are not a general purpose way to manage or limit spend.

Quotas are enforced only for serverless SQL warehouses. When you hit your serverless quota in a region, workspaces cannot launch new serverless SQL warehouses. Hitting this limit does not terminate existing SQL warehouses in the region. However, if you hit the limit, Azure Databricks prevents increasing the number of compute resources in the warehouse.

Increase serverless quota

  1. Go to the Help + support section of the Azure Portal. For example, click the icon under Azure services.

    Getting to the Help + Support section of Azure portal

  2. On this page, click Create a support request.

    The Help + Support section of Azure portal

  3. Enter the following on the request form:

    • Set the Summary to quota.
    • Set the Issue type to Service and subscription limits (quotas).
    • Set the Subscription to your own Azure subscription.
    • Set the Quota type to Azure Databricks Serverless.

    File a request

  4. Click Next.

  5. In the page that appears, under Problem details, click the blue text Enter details.

  6. The Quota details form appears to the right. Set the workspace region and your quota request as the total (not the increase amount) as a number that represents the maximum Databricks Units per hour (DBUs/hour).

    Important

    If you got an error message that you exceeded your serverless quota, review the error message. Request a quota number at least as high as the DBUs/hour number that the error message mentioned that you tried to use.

    Enter region and DBUs/hour

  7. Below the Quota details form, click Save and continue.

  8. Wait for an email response. In some cases, it could take several business days.