Delayed durable transactions are saved to disk soon after the transaction has committed and control was returned to the client. after a server restart).įor even greater performance gains, In-Memory OLTP supports durable tables with transaction durability delayed. Data in memory-optimized tables is only read from disk during database recovery (eg. See Creating and Managing Storage for Memory-Optimized Objects for more information about durable tables. A second copy of the table data is maintained on disk, but only for durability purposes. Rows in the table are read from and written to memory. The primary storage for memory-optimized tables is the main memory. Starting with SQL Server 2016, and in Azure SQL Database, there are no limitations for collations or code pages that are specific to In-Memory OLTP. Memory-optimized tables and natively compiled stored procedures support only a subset of Transact-SQL features. Memory-optimized tables are fully durable by default, and, like transactions on (traditional) disk-based tables, transactions on memory-optimized tables are fully atomic, consistent, isolated, and durable (ACID). Memory-optimized tables are created using CREATE TABLE (Transact-SQL).
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