Can you backup SQL database while use?

Does backing up a SQL database take it offline?

No, you cannot backup an offline database, however you can copy or move or even delete the raw database files (mdf and ldf).

Do SQL backups affect performance?

Backups should not cause performance problems as such operations do not take locks on user objects. There is a I/O load though during back up operations but truly speaking you should first validate the complain. There might be other causes for performance problems if the application is really slow.

How do I backup an entire SQL database?

SQL Server Management Studio1Right click on the database name.2Select Tasks > Backup.3Select "Full" as the backup type.4Select "Disk" as the destination.5Click on "Add..." to add a backup file and type "C:\AdventureWorks.BAK" and click "OK"6Click "OK" again to create the backup.SQL Server Full Backups - MSSQLTips.com

How do I backup a live database?

Right-click on the database you want to back up, then select Tasks > Back up. (This is not available for version 2018/2019) On the Back Up Database window, make sure the Database field contains the name of the database you want to back up. Select the Backup Type.