When used in the context of databases, memory refers to RAM directly addressable by the CPU as opposed to going through the I/O subsystem.

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return my.conf values to sane levels (total memory footprint = 220GB)

I recently took over administration responsibilities for one of our databases. The existing my.cnf has some crazy values. I should mention that one table has 1.8 billion rows of mostly unneeded ...
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Do threads in cache still use memory?

I was studying about how and how much memory allocated to each connection thread and found below MySQL tutorial: http://dev.mysql.com/doc/refman/5.1/en/memory-use.html There is a point mentioned as ...
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Large table with historical data allocates too much of SQL Server 2008 Std. memory - performance loss for other databases

Based on this question and the answers given: SQL 2008 Server - performance loss possibly connected with a very large table I have discovered memory allocation problem with SQL Server 2008. ...
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Do Inactive MySQL Databases Consume Memory?

I have inactive databases that are on the server just for archive purposes. I know I can do mysqldump for all of them, but I am not 100% sure they are inactive. When I started my system I didn't ...
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When should I NOT set the Maximum Server Memory option in SQL Server?

In SQL Server, I normally set the Maximum Server Memory setting to one of the popular best practices, such as leaving 10% or 4GB, whichever is higher. ...