![]() ![]() ( Warning: While it is possible to start and stop the services using the services.msc, it is against best practices and may lead to database corruption.) While these tasks can be completed with SQL PowerShell and T-SQL statements, I chose the prior three methods because I felt they were easier to use when it came to applying these commands to named instances. Three different ways to change the status of SQL Servicesīelow are examples of how to Start, Pause, Stop, and Restart the SQL Services using SQL Server Configuration Manager, the Command Prompt, and SQL Server Management Studio. It can not provide information about other SQL Servers that are running on different machines within the same network. ![]() However, the SQL Browser Service is only able to provide information about instances running on its particular machine. Unlike the SQL Server Service which will have services running for each instance, only one SQL Browser Service is required to provide the necessary connection information for all of the instances on a machine. Because the SQL Browser Service resolves issues that are caused by a variety of scenarios like multiple network cards, statically assigning a port to a SQL Server only to have a different service request that port first, or having dynamically assigned ports, for customized port configurations or servers running multiple instances, I highly recommend keeping this service enabled and set to start automatically. It allows incoming client connections to request information on UDP port 1434 and then the Browser Service provides the specific TCP/IP port or named pipe information back to the client. The SQL Browser Service acts like a DNS Server for SQL. SQL Browser Service listens to incoming client requests for SQL resources and provides connection information to the default and any additional named instances that are running on a particular machine. In this specific scenario, SQL Agent Service will also need to be started manually. If the SQL Server Service is stopped manually, SQL Agent Service will not automatically start when SQL Server Service is manually started. The SQL Agent Service is dependant on the SQL Server Service and therefore cannot run if the SQL Server Service is stopped. However, since it is often relied upon by scheduled maintenance, backup, and monitoring tasks, it is recommended that this service is set to start automatically. By default, SQL Agent Service is set to start manually. ![]() The SQL Agent Service is responsible for running scheduled tasks and jobs. For more information about account permission and best practices, please see the following article: Configure Windows Service Accounts and Permissions.Įxample of SQL Server Configuration Manager showing the installed SQL Services and differentiating between the default SQL instance MSSQLSERVER and a named instance DEVELOPMENT However, since only one instance of SQL Server Browser can run per server, it runs under a Local Service account by default. For instances that do not require access to external resources, Microsoft recommends configuring SQL Server Service and SQL Server Agent to use the default virtual account, otherwise, it is recommended to use a Managed Service Account with the least privileges required. ![]() SQL Services can be configured to run as a domain user, local user, managed service accounts, virtual accounts, or built-in system account. The SQL Server Service is not dependent on any other services to run. The Database Engine can be the default instance which will be listed as: SQL Server (MSSQLSERVER) (limit one per computer), or the Database Engine can be one of many named instances listed as: SQL Server (instance_name). The SQL Server Service is the executable process that IS the SQL Server Database Engine. Some examples of services are the drivers for your keyboard and mouse, your antivirus software, and the SQL Server Service. A service is a program that runs in the background that does not require any user interaction. ![]()
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