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- In this article
- Security risk factors
- High-risk servers
- Antivirus software types
- SQL Server processes to exclude from virus scanning
- Configure antivirus software to work with SQL Server Database Engine
- Configure antivirus software to work with Analysis Services (SSA
- Configure antivirus software to work with SQL Server Integration Services (SSI
- Configure antivirus software to work with PolyBase
- Configure antivirus software to work with Reporting Services (SSR
This article contains general guidelines to help you properly configure antivirus software on computers that are running SQL Server in your environment.
We strongly recommend that you individually assess the security risk for each computer that's running SQL Server in your environment. Based on the assessment, you must select the appropriate tools for the security risk level of each computer that's running SQL Server.
Additionally, we recommend that you test the entire system under a full load to measure any changes in stability and performance before you roll out any virus-protection software.
Virus protection software requires some system resources to execute. You must perform testing before and after you install your antivirus software to determine whether there's any performance effect on the computer that's running SQL Server.
Consider the following factors when deciding on anti-malware solutions:
The business value of the information that's stored on the computer.
The required security level for the information.
The cost of losing access to the information.
Any server is at some risk of infection. The highest-risk servers generally meet one or more of the following criteria:
The servers are open to the public Internet.
The servers have open ports to servers that aren't behind a firewall.
The servers read or execute files from other servers.
The servers run HTTP servers, such as Internet Information Services (IIS) or Apache.
The servers host file shares.
Active virus scanning: This kind of scanning checks incoming and outgoing files for viruses.
Virus sweep software: Virus sweep software scans existing files for file infection. It detects issues after files are infected by a virus. This kind of scanning may cause the following SQL Server database recovery and SQL Server full-text catalog file issues:
If the virus sweep software has opened a database file when SQL Server tries to open the database, the database to which the file belongs might be marked as suspect. SQL Server opens a database when it starts or when a database with Auto-Close enabled was closed and is accessed again. SQL Server database files typically have
If the virus sweep software has a SQL Server full-text catalog file open when
tries to access the file, you may have problems with the full-text catalog.
includes a set of tools that enable enterprise administrators to perform a wide range of security tasks. These tasks include download, analyze, test, edit, store Microsoft-recommended security configuration baselines for Windows and other Microsoft products, and compare them against other security configurations. To download it, go to
When you configure your antivirus software settings, make sure that you exclude the following processes (as applicable) from virus scanning.
For an updated list of services and file paths, see
Services installed by SQL Server
Applications installed on a SQL Server computer can load modules into the SQL Server process (
). The applications use this functionality to run business logic or for intrusion monitoring and protection. To detect if an unknown module or a module from third-party software was loaded into the process memory space, check the output of the
In some cases, applications or drivers may be used to detour SQL Server or Windows code to provide malware protection or monitoring services. However, if such applications or drivers aren't designed correctly, they may cause a wide variety of issues for products like SQL Server. For information about third-party detours or similar techniques in SQL Server, see
This section applies to SQL Server installations running on Windows operating systems, both stand-alone and Failover Cluster Instances (FCI).
Directories and file name extensions to exclude from virus scanning
When you configure your antivirus software settings, make sure that you exclude the following files or directories (as applicable) from virus scanning. Exclusion may improve SQL Server performance and ensures that the files aren't locked when the SQL Server service must use them. However, if these files become infected, your antivirus software can't detect the infection. For more information about the default file locations for SQL Server, see
File Locations for Default and Named Instances of SQL Server
These files usually have one of the following file name extensions:
By default, the data files are located in the following directories. However, they can be placed in any directory by the database administrators of the system.
The following Analysis Services directories and processes can be excluded from antivirus scanning.
SSAS processes to exclude from virus scanning
The is a placeholder for the build ID. For example, a default Analysis Services 2016 instance binary installation location by default is
SSAS directories and file name extensions to exclude from virus scanning
When you configure your antivirus software settings, make sure that you exclude the following SSAS files or directories (as applicable) from virus scanning. Excluding the files improves SSAS performance and helps make sure that the files aren't locked when the SQL Server service must use them. However, if these files become infected, your antivirus software can't detect the infection.
Data directory for Analysis Services
The following processes and directories for the SSIS services are to be excluded from antivirus scanning.
SSIS processes to exclude from virus scanning
The placeholder refers to the version-specific details.
SSIS directories to exclude from virus scanning
When you configure your antivirus software settings, make sure that you exclude the following files or directories (as applicable) from virus scanning. This improves the performance of the files and helps make sure that the files aren't locked when the SSIS service must use them. However, if these files become infected, your antivirus software can't detect the infection.
The placeholder refers to the version-specific details.
The following processes and directories for the PolyBase services are to be excluded from anti-virus scanning.
PolyBase processes to exclude from virus scanning
PolyBase Data Movement service (DMS) and Engine services use the same executable with different command line parameters.
PolyBase directories and file name extensions to exclude from virus scanning
The following processes and directories for the SQL Server Reporting Services (SSRS) are to be excluded from antivirus scanning.
SSRS processes to exclude from virus scanning
The executables to exclude have evolved across different versions of SSRS. The following table lists them according to the SSRS version.
SSRS directories to exclude from virus scanning
Apr 1, 2020 · A SQL injection is when a malicious SQL query (command) is entered into a data input box on a website. If the website is insecure then the SQL query can trick the website into giving unauthorised access to the website’s database. An SQL injection can be used to view and edit the contents of a database or even gain administrator privileges.
- Selecting All Columns From One Table. This query is useful when you want to quickly get all the columns from a table without writing every column in the SELECT statement.
- Selecting One Column From One Table. You can use this query when you only need one column from the table.. Query. SELECT first_name FROM employees; Explanation.
- Selecting Two Columns From One Table. This query is useful when selecting two (or more) columns from one table. Query. SELECT first_name, last_name FROM employees;
- Selecting Two (or More) Columns From One Table and Filtering Using Numeric Comparison in WHERE. Knowing this SQL query will allow you to filter data according to numeric values.
Oct 10, 2022 · SQL injection (SQLi) is a cyberattack that injects malicious SQL code into an application, allowing the attacker to view or modify a database. According to the Open Web Application Security Project, injection attacks, which include SQL injections, were the third most serious web application security risk in 2021.
In computers, Anti Viruses is proven to be such guards that can take care the trace passes of Virus. It isn’t always recommended to install Anti Virus on a dedicated SQL Server machine, however, it is not a rule or compulsion that one can’t.
People also ask
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Mar 18, 2010 · SQL Query mainly works in three phases . 1) Row filtering - Phase 1: Row filtering - phase 1 are done by FROM, WHERE , GROUP BY , HAVING clause. 2) Column filtering: Columns are filtered by SELECT clause.
