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Why is SQL Server 2008 R2 using so much memory?
You may need to reserve more memory for the operating system or other applications. Note also that on SQL 2008 R2, memory allocated for the procedure cache is not included in the Max Memory setting, so generally you have to take a conservative educated guess (see above) and tweak from there. How do you know if you guessed right?
What are the memory settings for SQL Server?
Microsoft SQL Server Management Studio 10.50.1600.1 Microsoft Analysis Services Client Tools 10.50.1600.1 Microsoft Data Access Components (MDAC) 6.0.6002.18005 Microsoft MSXML 3.0 5.0 6.0 Microsoft Internet Explorer 9.0.8112.16421 Microsoft .NET Framework 2.0.50727.4216 Operating System 6.0.6002 The Max Memory setting is in MB, not bytes.
Is it possible to restart a SQL Server?
If SQL Server is restarted all the cache memory is automatically cleaned up. In production server it is not possible to restart the server. In this scenario following three commands can be very useful.
How is memory allocation done in SQL Server?
In earlier versions of SQL Server ( SQL Server 2005 (9.x), SQL Server 2008 and SQL Server 2008 R2), memory allocation was done using five different mechanisms: Single-Page Allocator (SPA), including only memory allocations that were less than, or equal to 8-KB in the SQL Server process.
How does memory management work in SQL Server?
The SQL Server Database Engine does this by using the Memory Notification APIs in Microsoft Windows. When SQL Server is using memory dynamically, it queries the system periodically to determine the amount of free memory. Maintaining this free memory prevents the operating system (OS) from paging.
How much memory is available in SQL Server?
AWE mechanism (Allows SQL Server to go beyond the process virtual address space limit on 32-bit platform.) SQL Server Standard, Enterprise, and Developer editions: Buffer pool is capable of accessing up to 64 GB of memory.