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Spotlight on Oracle 11.0 - Getting Started Guide

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Network Page

The Network page contains several charts.

To open the network page

  1. Select the Spotlight on Unix connection in the Spotlight Browser.

  2. Click Activity Summary | Network.

Charts on the Network page

Notes:

  • Every chart has a legend (list of symbols) to its right that describes the various series (line graphs) on the chart.
  • Click an item in the legend to highlight its series (line) in the chart. Click a second time to return the series to its normal appearance.
  • Move the mouse pointer over an item in the legend to view the current value for that series within the chart.
Chart Description
Network Utilization

The total rate of data traffic across all network cards (NICs) for the Unix host, measured in packets/second.

Separate graphs on the chart indicate the rates at which data packets are being:

  • Received by the Unix host from the network (Packets In).
  • Transmitted by the Unix host to the network (Packets Out).
Connections

The number of external services with which the Unix host is communicating. The graphs on this chart represent three types of connections:

  • Established - The total number of TCP/IP connections to this machine in the ESTABLISHED state.
  • TIME_WAIT - The total number of TCP/IP connections to this machine in the TIME_WAIT state, where the local socket has closed, and it is waiting for the remote end to signal that it has done the same.
  • CLOSE_WAIT - The total number of TCP/IP connections to this machine in the CLOSE_WAIT state, where the remote end of the connection has shut down, and it is waiting for the local end to do the same.
Network Utilization by Kilobytes

The total rate of data traffic across all network cards (NICs) for the Unix host, measured in kilobytes/second.

Separate graphs on the chart indicate the rates at which data is being:

  • Received by the Unix host from the network (KB In).
  • Transmitted by the Unix host to the network (KB Out).
Packets by Network Card

This chart shows the rate of data traffic for every network card (NIC) in the Unix host, measured in packets/second. For every NIC, a separate graph represents the data packets:

  • Received by the NIC from the network (Packets In).
  • Transmitted by the NIC to the network (Packets Out).
Error Rates by Network Card

This chart shows error rates for the data transferred by every network card (NIC) in the Unix host, measured in errors/second. For every NIC, a separate graph represents the errors in data:

  • Received by the NIC from the network (Errors In).
  • Transmitted by the NIC to the network (Errors Out).
Collisions by Network Card

A collision is the result of two devices trying to transmit data packets across the network at the same time. The network detects the collision of the two transmitted packets as an error, and discards them both. Both devices then need to re-send the data.

This chart shows the rate at which collisions occur for every network card (NIC) in the Unix host.

 

Related Topics

Spotlight on Unix Drilldowns

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