In this post, I am sharing the script to make a database read-only or changing from read-only to the read-write mode of SQL Server.

When we are attaching MDF or LDF files, sometimes the database status shows that the database is in Read-Only mode.

If we have some historical archive databases, we can also set the Read-Only mode to that database so that any database user can only read the database.

Script to make database Read-Only:

ALTER DATABASE [DatabaseName] SET READ_ONLY WITH NO_WAIT

Script to make database Read-Write:

ALTER DATABASE [DatabaseName] SET READ_WRITE WITH NO_WAIT

If you get any error like that database is already in use, you can alter database for a single user which closes all existing connections.

You can use below script for converting database into Single User Mode:

ALTER DATABASE [DatabaseName] SET SINGLE_USER WITH ROLLBACK IMMEDIATE;