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SQL Server–Activate Memory Optimized tables

When trying to create a Memory Optimized table in SQL Server, I got the following error message:

Cannot create memory optimized tables. To create memory optimized tables, the database must have a MEMORY_OPTIMIZED_FILEGROUP that is online and has at least one container.

To fix this I first had to add a new memory optimized filegroup to the database:

ALTER DATABASE OntSessionTmp ADD FILEGROUP ontsessiontmp_mod CONTAINS MEMORY_OPTIMIZED_DATA

After creating the filegroup I had to link a container:

ALTER DATABASE ontsessiontmp ADD FILE (name='ontsessiontmp_mod1', filename='F:\Program Files\Microsoft SQL Server\MSSQL13.ONTINST2\MSSQL\DATA\ontsessiontmp_mod1') TO FILEGROUP ontsessiontmp_mod

Now I could switch a table to a Memory Optimized version. Yes!

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