Viewing Profile Data in MC

Management Console allows you to view profile data about a single query. You can:

  • Review the profile data in multiple views
  • View details about projection metadata, execution events, and optimizer events
  • Identify how much time was spent in each phase of query execution and which phases took the most amount of time

After you select the database you want to use, you can view the profile data using Management Consolein either of two ways:

  • Focus on specific areas of database activity, such as spikes in CPU usage

  • Review the profile data for a specific query

To focus on specific areas of database activity:

  1. At the bottom of the Management Console window, click the Activity tab.

  2. From the list at the top of the page, select Queries.

  3. On the activity graph, click the data point that corresponds to the query you want to view.

  4. In the View Plan column, click Profile next to the command for which you want to view the query plan. Only certain queries, like SELECT, INSERT, UPDATE, and DELETE, have profile data.

  5. In The Explain Plan window, Vertica profiles the query.
  6. You can view the output in Path Information view, Query Plan Drilldown view, Tree Path view, or Profile Analysis view. To do so, click the respective buttons on the left of the output box.

To review the profile data for a specific query:

  1. In the Explain window, type or paste the query text into the text box. Additionally, you can monitor queries that are currently running. To do so, perform one of the following. In the Find a Query By ID input window:

    • Enter the query statement and transaction ID
    • Click the Browse Running Queries link

    If you enter more than one query, Management Console profiles only the first query.

  2. To receive periodic updates about the query's progress and resources used, select the Enable Monitoring check box. As a best practice, avoid specifying an interval time of less than 60 seconds because doing so may slow your query's progress.

  3. Click the Profile button.

    While Vertica is profiling the query, a Cancel Query button is enabled briefly, allowing you to cancel the query and profiling task. If the Cancel Query button is disabled, that means Management Console does not have the proper information to cancel the query or the query is no longer running in the database.

    When processing completes, the profile data and metrics display below the text box. You can view the output in Path Information view, Query Plan Drilldown view, Tree Path view , or Profile Analysis view. To do so, click the respective view buttons on the left of the output box.