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Monitor Oracle Resource Consumption in UNIX (Doc ID 148466.1)

Last updated on SEPTEMBER 15, 2022

Applies to:

Oracle Database - Personal Edition - Version and later
Oracle Database - Standard Edition - Version and later
Oracle Database - Enterprise Edition - Version and later
Generic UNIX


This article is intended to provide DBAs an overview of the resources consumed by Oracle,
and the tools commonly used to monitor the resource consumption.

For more up to date unix os commands, review following note: <Note:293561.1> Unix Commands on Different OS's


Database performance is bounded by the system resources. Sometimes, poor database performance can be caused by faulty configuration of the
instance and database. Sometimes, it can be caused by abnormal resource consumption by an Oracle transaction, user, or process.
It is essential for DBAs to proactively monitor the resource consumption, and take any corrective actions before potential serious impacts.

Memory, CPU, and I/O are the three most common resources consumed by Oracle. We will discuss these resources, and list some of the commonly
used tools that monitor them. These resources can be monitored at both Oracle Server and Operating System levels. DBAs should acquire any detailed
information about the OS tools from the System Administrators or OS vendors.


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