OpenText Analytics Database 26.2.x – Viewing profile data in MC

Mc: Viewing different profile outputs

Mon, 01 Jan 0001 00:00:00 +0000

The Management Console allows you to examine the results of your query profile in multiple views. You can view your profile in the following formats:

Path Information view
Query Drilldown view
Tree Path view
Profile Analysis view

You can change the query profile output using the icons on the bottom portion of the Explain page.

The Path Information view displays the query plan path along with metric data. If you enable profile monitoring, the data will update at the specified interval. To view metadata for a projection or a column, click the object name in the path output. A pop-up window displays the metadata if it is available.

The Query Plan Drilldown view shows detailed counter information at the node and operator level.

For each path, the path number is listed along with statistical information on the node and operator level. This view allows you to see which nodes are acting as outliers. Click on any of the bars to expand details for that node.

The Tree Path details the query plan in the form of a tree. If you enable monitoring, the state of the path blocks will change depending on whether the path is running, done, or has not started. Metric information is displayed in each path block for the counters you specified in the Profile Settings.

The Profile Analysis view allows you to identify any resource outliers. You can compare the estimated rows produced count with the actual rows produced count, view execution time per path, and identify memory usage per path.

When you profile a query, you will also see a pie chart detailing the query phase duration. You can also view projection metadata, execution events, and optimizer events by clicking on the respective buttons next to the pie chart.

Mc: Monitoring profiling progress

Mon, 01 Jan 0001 00:00:00 +0000

While loading profile data for a query, Management Console can provide updates about the query's progress and resources used.

To enable profiling progress updates, select the Enable Monitoring check box when profiling a query. See Viewing Profile Data in Management Console.

The default interval time is 60 seconds. At the specified interval, Management Console displays an updated view of the query's progress. Note that interval times of less than 60 seconds may slow down your query.

Viewing updated profile metrics

At every interval, Management Console displays a new set of profile metrics. You can view these metrics in Path Information view, Query Plan Drilldown view, or Tree view by clicking the respective view buttons on the left of the output box.

A dark blue bar indicates the current metric percentage.
When a metric bar has decreased, a dark blue line indicates the previous metric percentage.
When a metric bar has increased, a light blue bar indicates the added percentage. The previous percentage appears as a dark blue bar.
A metric bar highlighted in yellow indicates it has changed since the last interval.
A metric bar highlighted in red indicates the absolute value of the metric has decreased. This typically means OpenText™ Analytics Database reported the previous value incorrectly, and has readjusted. (For example, if the database previously reported path's Time value as 75 seconds, then reports it as 50 seconds at the next interval, the metric bar turns red to indicate the decrease in absolute Time value.)

Mc: Expanding and collapsing query path profile data

Mon, 01 Jan 0001 00:00:00 +0000

When you have a query on the EXPLAIN window, the profile data displays in the right-hand side of the lower half of the window. The query path information can be lengthy, so you can collapse path information that is uninteresting, or expand paths that you want to focus on.

To collapse all the query paths, click Collapse All.
To expand all the query paths, click Expand All.
To expand an individual query path so you can see details about that step in processing the query, click the first line of the path information. Click the first line again to collapse the path data.

For information about what the profile data means, see About profile data in Management Console.