Explaining Max Server Memory

Randolph West explains SQL Server memory limits in various editions:

For the sake of this post, I am talking specifically about SQL Server 2012 and higher.

Let’s break this down.

On all editions of SQL Server (Enterprise, Standard, Web, Express), there is a configuration setting called Max Server Memory. This value should not be left at the default 2.1 petabytes, because at that value SQL Server will use all the memory you allow it (plus a little bit more if it needs to), and once it has it, it doesn’t release it back to the operating system without a fight.

Read on to see what Max Server Memory actually includes, as well as additional limitations on editions other than Enterprise.

Related Posts

New(ish) VLF Status: 4

Paul Randal points out a new VLF status which can appear if you’re using an Availability Group: At least since I started working on the SQL Server team (just after 7.0 shipped) and since then there have only been two VLF status codes: 0 = the VLF is not active (i.e. it can be (re)activated […]

Read More

What sys.dm_exec_query_stats Can Miss

Matthew McGiffen takes us through a scenario where sys.dm_exec_query_stats did not give a complete view of what was running on SQL Server: I got less than 50 rows back so figured I had everything covered, but the total elapsed time across all the queries was less than ten minutes, I knew the server hadn’t been […]

Read More

Categories

August 2017
MTWTFSS
« Jul Sep »
 123456
78910111213
14151617181920
21222324252627
28293031