name : list-available-resource-dimensions.rst **To list the dimensions that can be queried for a metric type on a DB instance** The following ``list-available-resource-dimensions`` example lists the ``db.load`` metrics you can query for the database ``db-abcdefg123456789``. :: aws pi list-available-resource-dimensions \ --service-type RDS \ --identifier db-abcdefg123456789 \ --metrics db.load Output:: { "MetricDimensions": [ { "Metric": "db.load", "Groups": [ { "Group": "db.user", "Dimensions": [ { "Identifier": "db.user.id" }, { "Identifier": "db.user.name" } ] }, { "Group": "db.sql_tokenized", "Dimensions": [ { "Identifier": "db.sql_tokenized.id" }, { "Identifier": "db.sql_tokenized.db_id" }, { "Identifier": "db.sql_tokenized.statement" } ] }, ... ] } ] } For more information about dimensions in Performance Insights, see `Database load <https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_PerfInsights.Overview.ActiveSessions.html>`__ in the *Amazon RDS User Guide* and `Database load <https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/USER_PerfInsights.Overview.ActiveSessions.html>`__ in the *Amazon Aurora User Guide*.