UNIX operating-system tools
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-monitoring utilities.
For information about 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 various 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. |