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Copy file name to clipboardExpand all lines: azure-sql/database/service-tier-hyperscale.md
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author: dimitri-furman
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ms.author: dfurman
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ms.reviewer: wiassaf, mathoma
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ms.date: 07/20/2022
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ms.date: 07/25/2022
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---
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# Hyperscale service tier
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| Short-term backup retention | Short-term backup retention for 1-35 days for Hyperscale databases is now in preview. A non-Hyperscale database can't be restored as a Hyperscale database, and a Hyperscale database can't be restored as a non-Hyperscale database.<BR/><BR/>For databases migrated to Hyperscale from other Azure SQL Database service tiers, pre-migration backups are kept for the duration of [backup retention](automated-backups-overview.md#backup-retention) period of the source database, including long-term retention policies. Restoring a pre-migration backup within the backup retention period of the database is supported [via the command line](recovery-using-backups.md#point-in-time-restore). You can restore these backups to any non-Hyperscale service tier.|
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| Long-term backup retention | Long-term backup retention isn't supported yet. Hyperscale has a different, snapshot based backup architecture, than other service tiers.|
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| Service tier change from Hyperscale to General Purpose tier is supported directly under limited scenarios | Reverse migration from Hyperscale allows customers who have recently migrated an existing Azure SQL Database to the Hyperscale service tier to move to General Purpose tier, should Hyperscale not meet their needs. While reverse migration is initiated by a service tier change, it's essentially a size-of-data move between different architectures. Databases created in the Hyperscale service tier aren't eligible for reverse migration. Learn the [limitations for reverse migration](manage-hyperscale-database.md#limitations-for-reverse-migration). <BR/><BR/> For databases that don't qualify for reverse migration, the only way to migrate from Hyperscale to a non-Hyperscale service tier is to export/import using a bacpac file or other data movement technologies (Bulk Copy, Azure Data Factory, Azure Databricks, SSIS, etc.) Bacpac export/import from Azure portal, from PowerShell using [New-AzSqlDatabaseExport](/powershell/module/az.sql/new-azsqldatabaseexport) or [New-AzSqlDatabaseImport](/powershell/module/az.sql/new-azsqldatabaseimport), from Azure CLI using [az sql db export](/cli/azure/sql/db#az-sql-db-export) and [az sql db import](/cli/azure/sql/db#az-sql-db-import), and from [REST API](/rest/api/sql/) isn't supported. Bacpac import/export for smaller Hyperscale databases (up to 200 GB) is supported using SSMS and [SqlPackage](/sql/tools/sqlpackage) version 18.4 and later. For larger databases, bacpac export/import may take a long time, and may fail for various reasons. |
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| When changing Azure SQL Database service tier to Hyperscale, the operation fails if the database has any data files larger than 1 TB | In some cases, it may be possible to work around this issue by [shrinking](file-space-manage.md#shrinking-data-files) the large files to be less than 1 TB before attempting to change the service tier to Hyperscale. Use the following query to determine the current size of database files. `SELECT file_id, name AS file_name, size * 8. / 1024 / 1024 AS file_size_GB FROM sys.database_files WHERE type_desc = 'ROWS'`;|
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| SQL Managed Instance | Azure SQL Managed Instance isn't currently supported with Hyperscale databases. |
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| Elastic Pools | Elastic Pools aren't currently supported with Hyperscale.|
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| Migration of databases with In-Memory OLTP objects | Hyperscale supports a subset of In-Memory OLTP objects, including memory-optimized table types, table variables, and natively compiled modules. However, when any In-Memory OLTP objects are present in the database being migrated, migration from Premium and Business Critical service tiers to Hyperscale isn't supported. To migrate such a database to Hyperscale, all In-Memory OLTP objects and their dependencies must be dropped. After the database is migrated, these objects can be recreated. Durable and non-durable memory-optimized tables aren't currently supported in Hyperscale, and must be changed to disk tables.|
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| Query Performance Insights | Query Performance Insights is currently not supported for Hyperscale databases. |
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| Shrink Database | DBCC SHRINKDATABASE or DBCC SHRINKFILE isn't currently supported for Hyperscale databases. |
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| Database integrity check | DBCC CHECKDB isn't currently supported for Hyperscale databases. DBCC CHECKTABLE ('TableName') WITH TABLOCK and DBCC CHECKFILEGROUP WITH TABLOCK may be used as a workaround. See [Data Integrity in Azure SQL Database](https://azure.microsoft.com/blog/data-integrity-in-azure-sql-database/) for details on data integrity management in Azure SQL Database. |
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| Elastic Jobs | Using a Hyperscale database as the Job database isn't supported. However, elastic jobs can target Hyperscale databases in the same way as any other database in Azure SQL Database. |
Copy file name to clipboardExpand all lines: docs/database-engine/availability-groups/windows/create-or-configure-an-availability-group-listener-sql-server.md
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|Permissions|Link|
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|-----------------|----------|
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|The cluster name object (CNO) of WSFC cluster that is hosting the availability group must have **Create Computer objects** permission.<br /><br /> In Active Directory, a CNO by default does not have **Create Computer objects** permission explicitly and can create 10 virtual computer objects (VCOs). After 10 VCOs are created, the creation of additional VCOs will fail. You can avoid this by granting the permission explicitly to the WSFC cluster's CNO. Note that VCOs for availability groups that you have deleted are not automatically deleted in Active Directory and count against your 10 VCO default limit unless they are manually deleted.<br /><br /> Note: In some organizations, the security policy prohibits granting **Create Computer objects** permission to individual user accounts.|*Steps for configuring the account for the person who installs the cluster* in [Failover Cluster Step-by-Step Guide: Configuring Accounts in Active Directory](/#BKMK_steps_installer)<br /><br /> *Steps for prestaging the cluster name account* in [Failover Cluster Step-by-Step Guide: Configuring Accounts in Active Directory](/#BKMK_steps_precreating)|
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|If your organization requires that you prestage the computer account for a listener virtual network name, you will need membership in the **Account Operator** group or your domain administrator's assistance.|*Steps for prestaging an account for a clustered service or application* in [Failover Cluster Step-by-Step Guide: Configuring Accounts in Active Directory](/#BKMK_steps_precreating2).|
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|The cluster name object (CNO) of WSFC cluster that is hosting the availability group must have **Create Computer objects** permission.<br /><br /> In Active Directory, a CNO by default does not have **Create Computer objects** permission explicitly and can create 10 virtual computer objects (VCOs). After 10 VCOs are created, the creation of additional VCOs will fail. You can avoid this by granting the permission explicitly to the WSFC cluster's CNO. Note that VCOs for availability groups that you have deleted are not automatically deleted in Active Directory and count against your 10 VCO default limit unless they are manually deleted.<br /><br /> Note: In some organizations, the security policy prohibits granting **Create Computer objects** permission to individual user accounts.|*Steps for configuring the account for the person who installs the cluster* in [Failover Cluster Step-by-Step Guide: Configuring Accounts in Active Directory](/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/cc731002(v=ws.10)#BKMK_steps_installer)<br /><br /> *Steps for prestaging the cluster name account* in [Failover Cluster Step-by-Step Guide: Configuring Accounts in Active Directory](/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/cc731002(v=ws.10)#BKMK_steps_precreating)|
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|If your organization requires that you prestage the computer account for a listener virtual network name, you will need membership in the **Account Operator** group or your domain administrator's assistance.|*Steps for prestaging an account for a clustered service or application* in [Failover Cluster Step-by-Step Guide: Configuring Accounts in Active Directory](/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/cc731002(v=ws.10)#BKMK_steps_precreating2).|
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> [!TIP]
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> Generally, it is simplest not to prestage the computer account for a listener virtual network name. If you can, let the account to be created and configured automatically when you run the WSFC High Availability wizard.
Copy file name to clipboardExpand all lines: docs/database-engine/availability-groups/windows/sql-server-always-on-database-health-detection-failover-option.md
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```
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#### Extended Event Output
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Using SQL Server Management Studio, connect to the primary SQL Server, and expand the Management node, then expand Extended Events. Locate the session (AlwaysOn_dbfault was the name in the sample above) and expand it to see the output files. Click on the output file and the event file will open into a new tab.
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Using SQL Server Management Studio, connect to the primary SQL Server, and expand the Management node, then expand Extended Events. Locate the session (AlwaysOn_dbfault was the name in the sample above) and expand it to see the output files. Select the output file and the event file will open into a new tab.
Copy file name to clipboardExpand all lines: docs/integration-services/change-data-capture/manage-a-cdc-instance.md
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You can use the CDC Designer Console to view information about the instances that you create and to manage the operation of the instances.
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Click on the name of an instance in the left pane to view the information about the instance.
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Select the name of an instance in the left pane to view the information about the instance.
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> [!NOTE]
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> If you select a service in the left pane, the list of available instances is also displayed in the center of the CDC Designer Console. If you select one of the instances in this section, you can carry out the tasks in the right pane; however, you will not be able to view the information in the property tabs.
Copy file name to clipboardExpand all lines: docs/relational-databases/backup-restore/sql-server-backup-to-url.md
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-[!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)] has a maximum limit of 259 characters for a backup device name. The BACKUP TO URL consumes 36 characters for the required elements used to specify the URL - 'https://.blob.core.windows.net//.bak', leaving 223 characters for account, container, and blob names put together.
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- SQL Server versions prior to 2022 have a limit of 256 characters for Shared Access signature (SAS) tokens, which will limit the type of tokens that can be used (for example, User Delegation Key tokens are not supported).
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- If your server accesses Azure via a proxy server, you must use trace flag 1819 and then set the WinHTTP proxy configuration via one of the following methods:
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- The [proxycfg.exe](/windows/win32/winhttp/proxycfg-exe--a-proxy-configuration-tool) utility on Windows XP or Windows Server 2003 and earlier.
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- The [netsh.exe](/windows/win32/winsock/netsh-exe) utility on Windows Vista and Windows Server 2008 or later.
Copy file name to clipboardExpand all lines: docs/relational-databases/data-tier-applications/extract-a-dac-from-a-database.md
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### <aname="BuildPackage"></a> Build package page
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Use this page to monitor the progress of the wizard as it extracts the data-tier application (DAC).
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**Action** - During the **Create and save DAC package file** action, the wizard extracts a DAC from your SQL Server database. Then, a DAC package is created in memory and saved to the location you specified. Click on the links in the **Result** column to see the outcome of the corresponding step.
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**Action** - During the **Create and save DAC package file** action, the wizard extracts a DAC from your SQL Server database. Then, a DAC package is created in memory and saved to the location you specified. Select the links in the **Result** column to see the outcome of the corresponding step.
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**Save Report** - Click to save the results of the wizard's progress to a file.
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**Save Report** - Select to save the results of the wizard's progress to a file.
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**Finish** - Click to close the wizard after processing has completed, or if an error occurs.
Copy file name to clipboardExpand all lines: docs/relational-databases/data-tier-applications/unpack-a-dac-package.md
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### <aname="Browse"></a> Browse for Folder
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Use this page to choose the destination folder for the unpack operation. Optionally, you can also create a new folder.
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**Folder list** - Displays the file hierarchy for your computer. Expand the nodes to navigate to the folder in which to unpack the DAC package. Click on the folder and then click **OK**.
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**Folder list** - Displays the file hierarchy for your computer. Expand the nodes to navigate to the folder in which to unpack the DAC package. Select the folder and then select **OK**.
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**Make New Folder** - Opens a dialog in which you can specify the name for a new folder to be created in the folder you have currently selected in the folder hierarchy.
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