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The
database server relies on the operating system of the host computer to provide
access to system resources such as the CPU, memory, and various unbuffered
disk I/O interfaces and files. Each operating system has its own set of utilities
for reporting how system resources are used. Different operating-systems might
have monitoring utilities with the same name but different options and informational
displays.
The following table shows typical UNIX operating-system resource-monitor
utilities. For information on how to monitor your operating-system resources,
consult your system administration guide.
| UNIX Utility |
Description |
| vmstat |
Displays virtual-memory statistics |
| iostat |
Displays I/O utilization statistics |
| sar |
Displays a variety of resource statistics |
| ps |
Displays active process information |
| cron |
Captures the status of system resources by a system scheduler
that runs a command or program at regular intervals. You also can use other
scheduling tools that are available with your operating system. |
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