Viewing the Member Overview

The Member Overview provides metrics on the state of the member over the course of the selected time range. Popups provide graphs that show you how the member is performing and whether or not there are any critical areas that need to be addressed.

To access the Member Overview:

  1. From the Database Overview, click Whole Database and select the member you want.
  2. Click Summary and select Overview.

From the Real Time dashboard, you can drill down to view additional metrics for the selected DB2 member or partition.

The following summary and dashboard pages are provided:

Summary

This page contains the following panes:

Workload Information

The Workload pane displays the session activity and CPU usage information for the selected partition. It is at the upper left of the Partition (History) page.

Description of the Pane

  • Data displayed for DB2 databases v9.7.0.1 and later:
    • Request Time Breakdown:
      • Baseline — A comparison of the average request time with the expected (according to the baseline) request time, plotted over the course of the selected time range.
      • Breakdown — the average request time by event category, plotted over the course of the selected time range.
  • Data displayed for DB2 databases earlier than v9.7.0.1:
    • CPU Wait Time- The average CPU wait time (in milliseconds), plotted over the course of the selected time range.
    • Average Active Sessions- A comparison of the average number of active sessions over the course of the selected time range with the average number of active sessions expected (according to the baseline).
    • CPU Usage- The percentage of CPU used by the partition, plotted over the course of the selected time range.

Hovering over a data point on either of the charts displays a pop-up that provides more detailed information about the data point. Clicking the Investigate using the “Top SQL” drilldown link takes you to the Top SQL pane for additional information.

Storage Information

The Storage pane displays the storage information for the selected partition. It is at the upper right of the Partition (History) page.

Description of the Pane The following data is displayed on the pane:

  • Storage Graph- The storage activity of the partition plotted over the course of the selected time range. The storage can be plotted as either:
    • Incremental change growth— incremental changes in partition growth (in MB/s) plotted over the course of the selected time range
    • Database size — the size of the database (in GB) plotted over the course of the selected time range
  • Avg. Consumption (MB/hour)- The average storage space consumed (in MB/hour) over the course of the selected time range.
  • Total Allocated (MB)- The total storage space allocated (in MB).

Hovering over a data point on the plot displays a pop-up that provides more detailed information about the data point. Clicking the Investigate using the “Table Space” drilldown link takes you to the Tablespaces pane for additional information.

OS Performance Information

The OS Performance pane displays the OS performance information for the selected partition. It is at the bottom left of the Partition (History) page.

Description of the Pane The following data is displayed on the pane:

  • Avg. CPU (%)- The average CPU consumed, as a percentage of the total allocated, over the course of the selected time range.
  • Avg. Memory (%)- The average memory consumed, as a percentage of the total allocated, over the course of the selected time range.
  • Disk Utilization (%)- The disk utilization, as a percentage of the total allocated, over the course of the selected time range.

Clicking any of the three charts displays a pop-up that provides additional, related information. On the pop-up, clicking the Investigate using the “Host Monitor” drilldown link takes you to the Host Monitor dashboard for additional information.

Availability Information

The Availability pane displays the availability information for the selected partition. It is at the lower middle of the Partition (History) page.

Description of the Pane The following data is displayed on the pane:

  • Sessions- The availability of the active and inactive sessions plotted over the course of the selected time range.
  • Member Availability- The average availability of the partition over the course of the selected time range.

For DB2 databases v9.7.0.1 and later:

  • Average Request Time (ms)- The average length of time (in ms) it took to process a single request, over the course of the selected time range.

For DB2 databases earlier than v9.7.0.1

  • Transaction Rate- The number of transactions being processed per second.

Mousing over a data point on the Sessions chart displays a pop-up that provides more detailed information about the data point. Clicking anywhere on the Partition Availability chart displays a pop-up that provides additional, related information. Clicking the icon next to the Avg. Request Time or Transaction Rate metric displays a pop-up that provides additional, related information.

Cache Hit Ratio Information

The Cache Hit Ratio pane displays the cache hit ratio information for the selected partition. It is at the right of the Partition (History) page.

Description of the Pane The following data is displayed on the pane:

  • Total BP (%)- The percentage of database page I/O requests that were satisfied using the buffer cache (and therefore the database did not have to perform disk reads), over the course of the selected time range.
  • Package (%)- The number of times that a requested section was not available for use and had to be loaded into the package cache, as a percentage of the total number of times that a section was requested, over the course of the selected time range.
  • Catalog (%)- The number of times that a table descriptor or authorization information was not found in the catalog cache and had to be inserted there, as a percentage of the total number of times that a table descriptor or authorization information was requested, over the course of the selected time range.

Clicking the icon next to any of the cache hit ratios displays a pop-up that provides additional, related information. Clicking the link at the bottom of any of the three pop-ups takes you to the corresponding dashboard for additional information.

HADR Information

If the database is configured for HADR, the HADR pane displays the associated HADR metrics for the partition. It is at the bottom right of the Partition (History) page.

Description of the Pane The following data is displayed on the pane:

  • Role- The HADR role of the database.
  • HADR Remote Host- The name of the HADR remote host.
  • HADR Remote Instance- The name of the HADR remote instance.
  • Log Gap- The size (in KB) of the gap between the primary log sequence number and the standby log sequence number.
  • HADR State- The HADR state of the database:
    • Disconnected
    • Performing local catch-up
    • Waiting to connect to its partner to perform remote catch-up
    • Performing remote catch-up
    • In a peer state

Where to go next Clicking the icon next to a metric displays a pop-up with additional, related information.