Merge pull request #18937 from dimitri-furman/dimitri-furman-3

Described switching RCSI on or off in SQL DB

Author: PRMerger10

docs/t-sql/statements/alter-database-transact-sql-set-options.md

@@ -2,7 +2,7 @@
 title: "ALTER DATABASE SET Options (Transact-SQL) | Microsoft Docs"
 description: Learn about how to set database options such as Automatic tuning, encryption, Query Store in SQL Server, and Azure SQL Database.
 ms.custom: ""
-ms.date: 09/04/2020
+ms.date: 03/24/2021
 ms.prod: sql
 ms.prod_service: "database-engine, sql-database"
 ms.reviewer: ""
@@ -2020,6 +2020,9 @@ The current setting of this option can be determined by examining the `is_read_c
 > [!WARNING]
 > When a table is created with `DURABILITY = SCHEMA_ONLY`, and **READ_COMMITTED_SNAPSHOT** is subsequently changed using `ALTER DATABASE`, data in the table will be lost.
 
+> [!TIP]
+> In [!INCLUDE[ssSDSfull](../../includes/sssdsfull-md.md)], the `ALTER DATABASE` command to set READ_COMMITTED_SNAPSHOT ON or OFF for a database must be executed in the `master` database.
+
 MEMORY_OPTIMIZED_ELEVATE_TO_SNAPSHOT { ON | **OFF** }     
 ON     
 When the transaction isolation level is set to any isolation level lower than SNAPSHOT, all interpreted [!INCLUDE[tsql](../../includes/tsql-md.md)] operations on memory-optimized tables are run under SNAPSHOT isolation. Examples of isolation levels lower than snapshot are READ COMMITTED or READ UNCOMMITTED. These operations run whether the transaction isolation level is set explicitly at the session level, or the default is used implicitly.