TN3270 Server Session Details workspace

In order to be displayed, performance data must have been collected for this session within the TN3270 display interval (by default, last 2 hours). This workspace displays an active session (sliding window and bucket count metrics are collected for these sessions each collection interval) or a session opened or closed within the TN3270 display interval.

Additional workspaces:

Right-click the TN3270 Navigator item to displays the following workspaces:

• TN3270 Server Sessions workspace (default)
• TN3270 Server Session Availability workspace

Links to other workspaces:

This workspace provides as link to the TCP Connections workspace.

Data source:

z/OS Communication Server callable and real-time network management interface (NMI)

Data filter:

Connection ID from the row in the previous workspace.

Configuration parameter:

• Configuration Tool: Responding Y to the Do you want to monitor this stack? question and setting the TN3270 Server Statistics Collection (global value) and TCP/IP Connection and Application Performance Statistics Collection (global value) or the TN3270 Server Statistics Collection Override (stack-specific override) and TCP/IP Connection Collection Override (stack-specific override) parameter values to Yes in the Configuration Tool enables data collection for this workspace.
• PARMGEN: Setting the values indicated for the following PARMGEN parameters:

  KN3_TCP_COLLECT_STACK		Y

  and either

  KN3_TCP_TN3270       		Y
  KN3_TCP_CONN						Y

  or

  KN3_TCPX0x_OVRD_TN3270		Y
  KN3_TCPXnn_OVRD_CONN			Y

• You must also enable the z/OS Communication Server network management interface (NMI) on every z/OS system where the monitoring agent will be running. This workspace uses the NETMONITOR SMFService profile dataset parameter to enable the real-time NMI required for data collection. This parameter must be set to ON in order to collect performance data. See the "Enabling the z/OS Communications Server network management interface" topic in the "Preparing your z/OS Environment" section of the IBM® Tivoli® OMEGAMON® XE for Mainframe Networks: Planning and Configuration Guide for information about when and how to perform this configuration step.

Figure 1 shows the TN3270 Server Session Details workspace.

Figure 1. The OMEGAMON XE for Mainframe Networks TN3270 Server Session Details workspace

The TN3270 Server Session Details workspace provides the following views:

• TN3270 Server Session Response Time: Displays a line graph, graphed over time, where:
  • Yellow represents the Average Total Response Time.
  • Blue represents the Average IP Response Time.
  • Pink represents the Average SNA Response Time.
• TN3270 Server Session Throughput: Displays Total Bytes Sent and Total Bytes Received in a stacked bar chart graphed against Connection ID where:
  • Yellow designates the Total Bytes Received.
  • Blue designates the Total Bytes Sent.
• TN3270 Server Session Response Time Bucket Counts: Displays the count of transactions falling into each of the response time buckets. This summary table displays performance data for a specific session (identified by a Connection Number). The displayed session has a collection time within the TN3270 display interval (by default, last 2 hours). For a complete list of the attributes available in the TN3270 Server Session Response Time Bucket Counts view, and a brief description of each, see the TN3270 Server Sess Avail Attributes help panel.
• TN3270 Server Session Details for connection_number Summary table: Provides a tabular summary of all the available performance data for active or completed TN3270 server sessions from the specified remote IP address, where remote_IP_address is the specified remote IP address.

For information about sliding windows and bucket counts, see z/OS Communications Server IP Configuration Guide.