Скачать или смотреть Troubleshooting Permissions and Configurations to Start the SQL Server Agent

Discover the necessary permissions and configurations required to successfully start the SQL Server Agent in SQL Server 2012.
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Starting SQL Server Agent can often be a critical part of maintaining and managing your SQL Server 2012 environment. However, running into issues where the SQL Server Agent fails to start is not uncommon. Understanding and addressing the necessary permissions and configurations can resolve these issues swiftly.

Why Permissions Matter
SQL Server Agent relies heavily on permissions to operate correctly. If it doesn't have the proper permissions, you'll likely encounter errors or the service simply won't start. Here are the key permissions needed:

Service Account Permissions: The SQL Server Agent service account must have the appropriate permissions. By default, the SQL Server Agent uses a domain user account, and this account should have permission to log on as a service. Additionally, it should have read/write permissions on the system tables in the msdb database.

SQL Server Role Membership: Ensure that the SQL Server Agent service account is a member of the sysadmin fixed server role. If for some reason you cannot grant sysadmin, ensure the account is at least a member of the SQLAgentOperatorRole, SQLAgentReaderRole, and SQLAgentUserRole roles within msdb.

Required Configurations
Aside from permissions, configurations play a significant role:

Account Configuration in SQL Server Configuration Manager: Go to SQL Server Configuration Manager and ensure that the service account configured for SQL Server Agent is correctly set. A mismatched or incorrect account can prevent the service from starting.

SQL Server Service Dependencies: SQL Server Agent depends on the SQL Server service itself. This means if the SQL Server service fails or is not running, the SQL Server Agent will not start. Ensure that the SQL Server service is operational before attempting to start the SQL Server Agent.

How to Start SQL Server Agent
Once you have confirmed that permissions and configurations are correct, you can start SQL Server Agent through several methods:

SQL Server Management Studio (SSMS):

Open SSMS and connect to your SQL Server instance.

In the Object Explorer, expand the SQL Server Agent node.

Right-click on SQL Server Agent and select "Start."

SQL Server Configuration Manager:

Open SQL Server Configuration Manager.

Navigate to SQL Server Services.

Right-click on SQL Server Agent (MSSQLSERVER) and select "Start."

Command Line:

Open Command Prompt with administrative privileges.

Type the following command:

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Press Enter.

Common Issues and Resolutions

Login Failure: Confirm that the service account credentials are correct.

Dependency Issues: Ensure that all dependent services like SQL Server (MSSQLSERVER) are running.

Port Configuration: Sometimes firewall or port configurations can block SQL Server Agent communication. Verify that necessary ports are open.

By ensuring that correct permissions and configurations are in place, starting SQL Server Agent should be a smooth and straightforward process. Taking a systematic approach can save you a lot of time and prevent unnecessary downtime.