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Copy file name to clipboardExpand all lines: docs/database-engine/configure-windows/sql-server-service-broker.md
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-`ENABLE_BROKER`
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-`DISABLE_BROKER`
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No significant changes were introduced in [!INCLUDE[ssnoversion](../../includes/ssnoversion-md.md)]. The following changes were introduced in [!INCLUDE[ssSQL11](../../includes/sssql11-md.md)].
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No significant changes were introduced in [!INCLUDE[ssCurrent](../../includes/sscurrent-md.md)]. The following changes were introduced in [!INCLUDE[ssSQL11](../../includes/sssql11-md.md)].
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### Messages can be sent to multiple target services (multicast)
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The syntax of the [SEND (Transact-SQL)](../../t-sql/statements/send-transact-sql.md) statement has been extended to enable multicast by supporting multiple conversation handles.
Copy file name to clipboardExpand all lines: docs/database-engine/database-mirroring/prerequisites-restrictions-and-recommendations-for-database-mirroring.md
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## <aname="DbmSupport"></a> Support For Database Mirroring
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For information about support for database mirroring in [!INCLUDE[ssnoversion](../../includes/ssnoversion-md.md)], see [Editions and Supported Features for SQL Server 2016](../../sql-server/editions-and-components-of-sql-server-2016.md).
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For information about support for database mirroring in [!INCLUDE[ssCurrent](../../includes/sscurrent-md.md)], see [Editions and Supported Features for SQL Server 2016](../../sql-server/editions-and-components-of-sql-server-2016.md).
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Note that database mirroring works with any supported database compatibility level. For information about the supported compatibility levels, see [ALTER DATABASE Compatibility Level (Transact-SQL)](../../t-sql/statements/alter-database-transact-sql-compatibility-level.md).
When upgrading a [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)] mirrored instance to a new [!INCLUDE[ssnoversion](../../includes/ssnoversion-md.md)] version, to a new [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)]service pack or cumulative update, or to a new Windows service pack or cumulative update, you can reduce downtime for each mirrored database to only a single manual failover by performing a rolling upgrade (or two manual failovers if failing back to the original primary). A rolling upgrade is a multi-stage process that in its simplest form involves upgrading the [!INCLUDE[ssnoversion](../../includes/ssnoversion-md.md)] instance that is currently acting as the mirror server in a mirroring session, then manually failing over the mirrored database, upgrading the former principal [!INCLUDE[ssnoversion](../../includes/ssnoversion-md.md)] instance, and resuming mirroring. In practice, the exact process will depend on the operating mode and the number and layout of mirroring session running on the [!INCLUDE[ssnoversion](../../includes/ssnoversion-md.md)] instances that you are upgrading.
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When upgrading a [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)] mirrored instance to a new [!INCLUDE[ssCurrent](../../includes/sscurrent-md.md)] version, to a new [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)]service pack or cumulative update, or to a new Windows service pack or cumulative update, you can reduce downtime for each mirrored database to only a single manual failover by performing a rolling upgrade (or two manual failovers if failing back to the original primary). A rolling upgrade is a multi-stage process that in its simplest form involves upgrading the [!INCLUDE[ssCurrent](../../includes/sscurrent-md.md)] instance that is currently acting as the mirror server in a mirroring session, then manually failing over the mirrored database, upgrading the former principal [!INCLUDE[ssCurrent](../../includes/sscurrent-md.md)] instance, and resuming mirroring. In practice, the exact process will depend on the operating mode and the number and layout of mirroring session running on the [!INCLUDE[ssCurrent](../../includes/sscurrent-md.md)] instances that you are upgrading.
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> [!NOTE]
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> For information on using database mirroring with log shipping during a migration, download this [Database Mirroring and Log Shipping whitepaper](https://t.co/RmO6ruCT4J).
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## Prerequisites
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Before you begin, review the following important information:
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-[Supported Version and Edition Upgrades](../../database-engine/install-windows/supported-version-and-edition-upgrades.md): Verify that you can upgrade to SQL Server 2016 from your version of the Windows operating system and version of SQL Server. For example, you cannot upgrade directly from a SQL Server 2005 instance to [!INCLUDE[ssnoversion](../../includes/ssnoversion-md.md)].
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-[Supported Version and Edition Upgrades](../../database-engine/install-windows/supported-version-and-edition-upgrades.md): Verify that you can upgrade to SQL Server 2016 from your version of the Windows operating system and version of SQL Server. For example, you cannot upgrade directly from a SQL Server 2005 instance to [!INCLUDE[ssCurrent](../../includes/sscurrent-md.md)].
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-[Choose a Database Engine Upgrade Method](../../database-engine/install-windows/choose-a-database-engine-upgrade-method.md): Select the appropriate upgrade method and steps based on your review of supported version and edition upgrades and also based on other components installed in your environment to upgrade components in the correct order.
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-[Plan and Test the Database Engine Upgrade Plan](../../database-engine/install-windows/plan-and-test-the-database-engine-upgrade-plan.md): Review the release notes and known upgrade issues, the pre-upgrade checklist, and develop and test the upgrade plan.
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-[Hardware and Software Requirements for Installing SQL Server 2016](../../sql-server/install/hardware-and-software-requirements-for-installing-sql-server.md): Review the software requirements for installing [!INCLUDE[ssnoversion](../../includes/ssnoversion-md.md)]. If additional software is required, install it on each node before you begin the upgrade process to minimize any downtime.
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-[Hardware and Software Requirements for Installing SQL Server 2016](../../sql-server/install/hardware-and-software-requirements-for-installing-sql-server.md): Review the software requirements for installing [!INCLUDE[ssCurrent](../../includes/sscurrent-md.md)]. If additional software is required, install it on each node before you begin the upgrade process to minimize any downtime.
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## Recommended Preparation (Best Practices)
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Before starting a rolling upgrade, we recommend that you:
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**Restrictions after you failover to an upgraded server instance.**
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After failing over from an earlier server instance to a [!INCLUDE[ssnoversion](../../includes/ssnoversion-md.md)] server instance, the database session is suspended. It cannot be resumed until the other partner has been upgraded. However, the principal server is still accepting connections and allowing data access and modifications on the principal database.
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After failing over from an earlier server instance to a [!INCLUDE[ssCurrent](../../includes/sscurrent-md.md)] server instance, the database session is suspended. It cannot be resumed until the other partner has been upgraded. However, the principal server is still accepting connections and allowing data access and modifications on the principal database.
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> [!NOTE]
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> Establishing a new mirroring session requires that the server instances all be running the same version of [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)].
[!INCLUDE [ SQL Server - Windows Only](../../includes/applies-to-version/sql-windows-only.md)]
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This article provides a step-by-step procedure for adding features to an instance of [!INCLUDE[ssnoversion](../../includes/ssnoversion-md.md)]. Some SQL Server components or services are specific to an instance of SQL Server. These are also known as instance-aware. They share the same version as the instance that hosts them, and are used exclusively for that instance. You can add the instance-aware components to an instance SQL Server, along with the shared components of if they are not already installed. For a list of features that are supported by the different editions of SQL Server, see [Editions and supported features of SQL Server 2017](../../sql-server/editions-and-components-of-sql-server-2017.md) or [SQL Server 2019](../../sql-server/editions-and-components-of-sql-server-version-15.md).
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This article provides a step-by-step procedure for adding features to an instance of [!INCLUDE[ssCurrent](../../includes/sscurrent-md.md)]. Some SQL Server components or services are specific to an instance of SQL Server. These are also known as instance-aware. They share the same version as the instance that hosts them, and are used exclusively for that instance. You can add the instance-aware components to an instance SQL Server, along with the shared components of if they are not already installed. For a list of features that are supported by the different editions of SQL Server, see [Editions and supported features of SQL Server 2017](../../sql-server/editions-and-components-of-sql-server-2017.md) or [SQL Server 2019](../../sql-server/editions-and-components-of-sql-server-version-15.md).
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To add features to an instance of SQL Server from the command prompt, see [Install SQL Server from the Command Prompt](./install-sql-server-from-the-command-prompt.md).
Copy file name to clipboardExpand all lines: docs/master-data-services/install-windows/install-master-data-services.md
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|Enable Data Quality Services (DQS) integration|For users of the [!INCLUDE[ssMDSshort](../../includes/ssmdsshort-md.md)][!INCLUDE[ssMDSXLS](../../includes/ssmdsxls-md.md)], enable integration with the DQS feature, which can be used to match similar data.|[Enable Data Quality Services Integration with Master Data Services](../../master-data-services/install-windows/enable-data-quality-services-integration-with-master-data-services.md)|
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|Deploy a sample model|Sample model packages are installed with Master Data Services, and can be deployed using MDSModelDeploy.exe.|[Deploying MDS Samples in SQL Server](~/master-data-services/sql-server-samples-model-deployment-packages-mds.md)|
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If you no longer need [!INCLUDE[ssMDSshort](../../includes/ssmdsshort-md.md)] on a computer, you can uninstall [!INCLUDE[ssMDSshort](../../includes/ssmdsshort-md.md)] and determine whether to remove items that are not affected by the uninstall process. For more information, see [Uninstall and Remove Master Data Services](../../sql-server/install/uninstall-and-remove-master-data-services.md).
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If you encounter issues during the installation process or initial configuration, see [Troubleshooting Installation and Configuration Issues](https://social.technet.microsoft.com/wiki/contents/articles/troubleshooting-installation-and-configuration-issues-master-data-services.aspx) on TechNet Wiki.
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If you no longer need [!INCLUDE[ssMDSshort](../../includes/ssmdsshort-md.md)] on a computer, you can uninstall [!INCLUDE[ssMDSshort](../../includes/ssmdsshort-md.md)] and determine whether to remove items that are not affected by the uninstall process. For more information, see [Uninstall and Remove Master Data Services](../../sql-server/install/uninstall-and-remove-master-data-services.md).
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## See Also
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[Install SQL Server 2016](../../database-engine/install-windows/install-sql-server.md)
Copy file name to clipboardExpand all lines: docs/relational-databases/backup-restore/media-sets-media-families-and-backup-sets-sql-server.md
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- The number of mirrors in the set (1-4); 1 indicates an unmirrored device.
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[!INCLUDE[ssnoversion](../../includes/ssnoversion-md.md)] can process media formatted by earlier versions of [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)].
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[!INCLUDE[ssCurrent](../../includes/sscurrent-md.md)] can process media formatted by earlier versions of [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)].
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## Backup sets
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A successful backup operation adds a single *backup set* to the media set. The backup set is described in terms of the media set to which the backup belongs. If the backup media consists of only one media family, that family contains the entire backup set. If the backup media consists of multiple media families, the backup set is distributed among them. On each medium, the backup set contains a header that describes the backup set.
[!INCLUDE[ssnoversion](../../includes/ssnoversion-md.md)] gives you the option of recovering a database despite detected errors. An important new error-detection mechanism is the optional creation of a backup checksum that can be created by a backup operation and validated by a restore operation. You can control whether an operation checks for errors and whether the operation stops or continues on encountering an error. If a backup contains a backup checksum, RESTORE and RESTORE VERIFYONLY statements can check for errors.
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[!INCLUDE[ssCurrent](../../includes/sscurrent-md.md)] gives you the option of recovering a database despite detected errors. An important new error-detection mechanism is the optional creation of a backup checksum that can be created by a backup operation and validated by a restore operation. You can control whether an operation checks for errors and whether the operation stops or continues on encountering an error. If a backup contains a backup checksum, RESTORE and RESTORE VERIFYONLY statements can check for errors.
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> [!NOTE]
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> Mirrored backups provide up to four copies (mirrors) of a media set, providing alternative copies for recovering from errors caused by damaged media. For more information, see [Mirrored Backup Media Sets (SQL Server)](../../relational-databases/backup-restore/mirrored-backup-media-sets-sql-server.md).
Copy file name to clipboardExpand all lines: docs/relational-databases/backup-restore/restore-a-database-backup-under-the-simple-recovery-model-transact-sql.md
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- For security purposes, we recommend that you do not attach or restore databases from unknown or untrusted sources. Such databases could contain malicious code that might execute unintended [!INCLUDE[tsql](../../includes/tsql-md.md)] code or cause errors by modifying the schema or the physical database structure. Before you use a database from an unknown or untrusted source, run [DBCC CHECKDB](../../t-sql/database-console-commands/dbcc-checkdb-transact-sql.md) on the database on a nonproduction server and also examine the code, such as stored procedures or other user-defined code, in the database.
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## Database Compatibility Level After Upgrade
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The compatibility levels of the **tempdb**, **model**, **msdb** and **Resource** databases are set to the compatibility level of [!INCLUDE[ssnoversion](../../includes/ssnoversion-md.md)] after upgrade. The **master** system database retains the compatibility level it had before upgrade, unless that level was less than 100. If the compatibility level of **master** was less than 100 before upgrade, it is set to 100 after upgrade.
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The compatibility levels of the **tempdb**, **model**, **msdb** and **Resource** databases are set to the compatibility level of [!INCLUDE[ssCurrent](../../includes/sscurrent-md.md)] after upgrade. The **master** system database retains the compatibility level it had before upgrade, unless that level was less than 100. If the compatibility level of **master** was less than 100 before upgrade, it is set to 100 after upgrade.
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If the compatibility level of a user database was 100 or higher before upgrade, it remains the same after upgrade. If the compatibility level was 90 before upgrade, in the upgraded database, the compatibility level is set to 100, which is the lowest supported compatibility level in [!INCLUDE[ssnoversion](../../includes/ssnoversion-md.md)].
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If the compatibility level of a user database was 100 or higher before upgrade, it remains the same after upgrade. If the compatibility level was 90 before upgrade, in the upgraded database, the compatibility level is set to 100, which is the lowest supported compatibility level in [!INCLUDE[ssCurrent](../../includes/sscurrent-md.md)].
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> [!NOTE]
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> New user databases will inherit the compatibility level of the **model** database.
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- The FILE clause to identify the backup set on the backup device to restore.
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> [!NOTE]
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> If you restore an earlier version database to [!INCLUDE[ssnoversion](../../includes/ssnoversion-md.md)], the database is automatically upgraded. Typically, the database becomes available immediately. However, if a [!INCLUDE[ssVersion2005](../../includes/ssversion2005-md.md)] database has full-text indexes, the upgrade process either imports, resets, or rebuilds them, depending on the setting of the **upgrade_option** server property. If the upgrade option is set to import (**upgrade_option** = 2) or rebuild (**upgrade_option** = 0), the full-text indexes will be unavailable during the upgrade. Depending the amount of data being indexed, importing can take several hours, and rebuilding can take up to ten times longer. Note also that when the upgrade option is set to import, the associated full-text indexes are rebuilt if a full-text catalog is not available. To change the setting of the **upgrade_option** server property, use [sp_fulltext_service](../../relational-databases/system-stored-procedures/sp-fulltext-service-transact-sql.md).
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> If you restore an earlier version database to [!INCLUDE[ssCurrent](../../includes/sscurrent-md.md)], the database is automatically upgraded. Typically, the database becomes available immediately. However, if a [!INCLUDE[ssVersion2005](../../includes/ssversion2005-md.md)] database has full-text indexes, the upgrade process either imports, resets, or rebuilds them, depending on the setting of the **upgrade_option** server property. If the upgrade option is set to import (**upgrade_option** = 2) or rebuild (**upgrade_option** = 0), the full-text indexes will be unavailable during the upgrade. Depending the amount of data being indexed, importing can take several hours, and rebuilding can take up to ten times longer. Note also that when the upgrade option is set to import, the associated full-text indexes are rebuilt if a full-text catalog is not available. To change the setting of the **upgrade_option** server property, use [sp_fulltext_service](../../relational-databases/system-stored-procedures/sp-fulltext-service-transact-sql.md).
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