Refers to the set of SQL Server Management Scripts created and maintained by Ola Hallengren. Questions tagged with this tag should be about how to use the scripts or about how to resolve an issue with the script.
Ola Hallengren's scripts can be downloaded from his site at https://ola.hallengren.com/
From his site:
The SQL Server Maintenance Solution comprises scripts for running backups, integrity checks, and index and statistics maintenance on all editions of Microsoft SQL Server 2005, SQL Server 2008, SQL Server 2008 R2, SQL Server 2012, and SQL Server 2014. The solution is based on stored procedures, the sqlcmd utility, and SQL Server Agent jobs. I designed the solution for the most mission-critical environments, and it is used in many organizations around the world.