liveBook · Manning

Memory

As explained in AI for Everyday IT

Physical memory is the hardware memory available to a computer system for storing active data and programs.

Physical memory is the hardware capacity available for storing active data and programs. In Oracle administration, compare configured memory with this capacity to identify heavily used database instances. section 10.6.2

A practical analysis converts settings such as 2000M and 6G into megabytes, calculates memory in use, and reports configurations exceeding 75% of physical memory. section 10.6.2

How AI for Everyday IT covers it

How deep it goes
Explains unit conversion and usage formulas, then applies them in a query while stopping short of broader hardware diagnostics.
Examples
Uses a configuration query, a row containing 15297 MB, and a CTE that normalizes M and G values.
What it assumes
Assumes familiarity with database queries and Oracle memory parameters while demonstrating the required conversion and calculation logic.
What you can do after
Diagnose memory pressure by querying configurations, converting units, calculating usage, and filtering instances above a utilization threshold.
How it connects
Connects physical memory with Oracle database instances, SGA, PGA, memory targets, SQL queries, and common table expressions.

Also explained in

Compare how 14 books explain memory →

Related concepts

This explainer was generated by Manning's knowledge graph from the text of AI for Everyday IT. The section links point to the parts of the book it draws on.