Oracle Cloud Infrastructure Documentation

Data Catalog Metrics

You monitor the health, capacity, and performance of your data catalog instances by using metrics, alarms, and notifications.

This topic describes the metrics emitted by the metric namespace oci_datacatalog (the Data Catalog service).

Resources: data catalogs

Overview

The Data Catalog metrics help you measure the number of objects stored in your data catalog instance, the number of objects harvested, the time taken to harvest the objects, and errors encountered during harvest, if any.

Terminology

The following terms help understand metrics:

  • Namespace: A namespace is a container for Data Catalog metrics. The namespace identifies the service sending the metrics. The namespace for Data Catalog is oci_datacatalog.
  • Metrics: Metrics are the fundamental concept in telemetry and monitoring. Metrics define a time-series set of datapoints. Each metric is uniquely defined by namespace, metric name, compartment identifier, and a set of one or more dimensions, and a unit of measure. Each datapoint has a time stamp, a value, and a count associated with it.
  • Dimensions: A dimension is a key-value pair that defines the characteristics associated with the metric; for example, resourceId, which is the data catalog OCID.
  • Statistics: Statistics are metric data aggregations over specified periods of time. Aggregations are done using the namespace, metric name, dimensions, and the data point unit of measure within the time period specified.
  • Alarms: Alarms are used to automate operations monitoring and performance. An alarm keeps track of changes that occur over a specific period of time and performs one or more defined actions, based on the rules defined for the metric.

Prerequisites

  • IAM policies: To monitor resources, you must be given the required type of access in a policy written by an administrator, whether you're using the Console or the REST API with an SDK, CLI, or other tool. The policy must give you access to the monitoring services as well as the resources being monitored. If you try to perform an action and get a message that you don’t have permission or are unauthorized, confirm with your administrator the type of access you've been granted and which compartment you should work in. For more information on user authorizations for monitoring, see the Authentication and Authorization section for the related service: Monitoring or Notifications.

  • The metrics listed on this page are automatically available for any data catalog instance you create. You do not need to enable monitoring on the resource to get these metrics.

Available Metrics

Data Catalog metrics may include the following dimensions:

RESOURCEID: The OCID of the data catalog instance for which the metric applies.

JOBNAME: The name of the job that ran the harvest process.

Metric Metric Display Name Unit Description Dimensions
NumberOfObjects Number Of Objects count Total number of objects stored in a data catalog. resourceId
HarvestedObjects Harvested Objects count Total number of objects created in a data catalog by the harvest jobs. resourceId
HarvestJobTime Harvest Job Time seconds Time taken by each harvest job to complete its process.

resourceId

jobName

HarvestJobErrorCount Harvest Job Error Count count Total number of errors, if any, per harvest job.

resourceId

jobName

Using the Console

Here's how you view the metric charts:

  1. In the Console, open the navigation menu. Under Solutions and Platform, go to Monitoring and click Service Metrics.
  2. For Compartment, select the compartment that contains the data catalogs that you're interested in.
  3. For Metric Namespace, select oci_datacatalog.

The Service Metrics page dynamically updates the page to show charts for each metric that is emitted by the selected metric namespace.