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Foglight for Oracle (Cartridge) 7.2.0 - User Guide

Installing and Configuring Agents Using Foglight for Oracle
Viewing the Databases Dashboard Assigning Instances to Users Selecting an Instance to Monitor Foglight for Oracle Overview Dashboard Overview view Advisories view SQL Performance Investigator (SQL PI) Oracle Activity Drilldown Pluggable Databases Drilldown Storage Drilldown Reviewing Configuration Settings Reviewing the Alert Log Reviewing Monitored Data Guard Environments Reviewing ASM Instances Reviewing Exadata-related Information
Administering Foglight for Oracle Reporting Reference Glossary

Reviewing Locks Activity at the Instance Level

The Activity Locks panel, which displays lock summary information for an Oracle instance, comprises the following panes:

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Locks Wait Events chart
The content of this pane is similar to that of the chart displayed under the Activity > Locks > Locks Historical Tree pane at the Whole Cluster mode. For more information, see Locks Historical Tree.
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Locks Activity pane — identical to the Locks Activity pane in the Whole Cluster mode. For more information, see Locks Activity.
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Locks Tree (Current) pane — identical to the Locks Tree (Current) pane in the Whole Cluster mode. For more information, see Lock Tree (Current).
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Locks Historical Tree — see Locks Historical Tree .

Locks Historical Tree

The Locks Historical Tree pane displays the locks activity and the locks tree summary, plotted over time.

This pane includes the sections listed below.

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Locks Activity — this section, which is identical to the Locks Activity section in the Locks Overview pane, displays the lock wait (average active sessions), which can be plotted as either:
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Baseline — lock wait time plotted over time.
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Breakdown — lock wait and non-lock wait plotted over time.
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Locks Exceeding a predefined threshold — displays locks that reached or exceeded the minimal duration, in seconds, which a lock should reach or exceed in order to be collected. The minimal duration’s length is defined using the Locks pane of the Collection Settings view.

Viewing Detailed Sessions Data

The Sessions screen allows you to trace the activity of all currently connected sessions, as well as their resource consumption.

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NOTE: The refresh rate of the data displayed on the Sessions panel can be set by selecting a value from the Refresh interval drop-down list, which appears on the panel’s upper right side.

 

This panel can also be used to carry out the tasks described in the following sections:

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Sessions Summary
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Sessions Details
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Session Drill Down
Sessions Summary

The Current section in the top of the screen allows you to view current Key Performance Indicators of the monitored instance:

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Sessions - Displays the distribution of the currently connected sessions between active (sessions that are currently running a SQL statement) and inactive sessions.
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Throughput — Divided into 4 metrics which represent the throughput of the monitored instance:
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Logons/s — The rate per second of sessions that were initiated during the current sampling period.
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Executions/s — The rate per second of statements executions during the current sampling period.
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Commits/s — The rate per second of commits during the current sampling period.
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Rollbacks/s — The rate per second of rollbacks during the current sampling period.
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Locks — Displays the total number of blocked sessions during the current sampling period.
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Host CPU Utilization — The host CPU utilization % during the current sampling period.

The Last 1 hour trend presents the activity on the instance during the last 1 Hour by presenting:

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Workload — Displays the general workload (average active sessions) during the specified time range.
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Breakdown — Displays the workload, distributed by the various wait event categories. The colors of the categories match the colors of the various resources displayed in the Resource Breakdown section.
By clicking the Top Wait Events link at the upper right corner of the section, The Active Wait Events popup appears, with the Resource drop-down list unfiltered and displaying the entire list of wait events
Sessions Details

The current sessions table allows you to monitor the currently running sessions and their individual resource consumption. The Session List section contains a table that lists all currently running sessions, displaying each session in a separate row.

The Sessions view in the table can be filtered by the Active only and Foreground Only check boxes:

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Active only — selected by default, presenting only the active sessions that are currently running, by clearing the check box, all inactive sessions will be presented as well.
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Foreground only — selected by default, presenting only the user sessions, by clearing the check box, the background sessions will be presented as well.
Session Drill Down

The various sections of the Session Drill Down page provide detailed information about the selected session upon selecting a specific session in the table.

Session Details Section

The left section of the screen displays several parameters that provide general information about the selected session, as follows:

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SID — Session identifier. NOTE: Clicking on the Session ID enables you to switch sessions from a popup list of current sessions.
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Serial# — Session serial number.
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Logon Time — The time when the user logged on to the session.
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Status — Indicates whether the session is active or inactive.
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DB User — The Oracle login name for this session.
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OS User — The OS login name for this session.
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Program — The name of the program the user is running to access Oracle
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Machine — The name of the host the session is running from.

Waiting On — The current wait event on which the session is waiting.

Reviewing Workload Details

The Workload chart displays the selected session workload (Average Active Sessions) during the specified time range (default 1 Hr.). The breakdown displays the workload, distributed by the various wait event categories. The colors of the categories match the colors of the various resources displayed in the Resource Breakdown section.

By clicking the Top Wait Events link at the upper right corner of the section, The Active Wait Events popup appears, with the Resource drop-down list unfiltered and displaying the entire list of wait events.

Reviewing SQL Summary

This tab provides details about the SQL statements that were executed by the selected session during the selected time range (up to 1 hour).

Reviewing Sessions Statistics

Additional statistics are displayed in the “Session Statistics” tab.

Reviewing Session Blocks

The Session Blocks pane displays all blocks held or requested by the selected session.

Viewing Datafiles I/O Activity at the Cluster Level

The Overall Datafiles I/O panel displays the I/O activity of all datafiles on the cluster. This panel includes the following sections:

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Total Physical I/O chart
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Datafiles I/O Summary table
Physical I/O chart

The Physical I/O chart displays the physical I/O activity within the cluster’s datafiles, in either of the following methods:

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NOTE: Baseline and Breakdown are not available at the cluster level.
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Baseline — displays the physical I/O activity along with the allowed range of typical observed behavior. Use the chart, in its baseline form, to display either a specific metric or all of the metrics.Metric values and typical behavior are plotted over time.
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Breakdown — provides a color-coded display of the physical activity of all instances within the RAC. Select whether to display the total physical I/O, only physical reads or only physical writes.

Click the arrow to the right of the Physical I/O title to display data for the total physical activity, or only for physical reads or writes.

Datafiles I/O Summary Table

The Datafiles I/O Summary table displays all of the I/O activity details of all datafiles on the cluster. Clicking the datafile’s name displays the Physical I/O Activity page, which presents the datafile’s physical read and writes, plotted over the time range, along with the overall physical reads and writes.

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IMPORTANT: To view the specific datafile’s storage data, click the link Datafile Storage, on the upper right side of the Physical I/O Activity page. For details, see Datafile-specific Page .
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