Show all the Oracle database used or installed Oracle features

Show all the Oracle database installed features for an instance

SQL Code

1select	name
2,	detected_usages
3from	dba_feature_usage_statistics
4where 	detected_usages > 0
5/

Sample Oracle Output:

1
2SQL>

Purpose:

• To identify and display database features that have been actively used within a specified period, providing insights into feature adoption, usage patterns, and potential areas for optimization or license management.

Breakdown:

Querying Feature Usage Data:

*   `select name, detected_usages from dba_feature_usage_statistics`: Retrieves information from the `dba_feature_usage_statistics` view, which stores statistics about database feature usage.
*   Selects two columns:
    
    *   `name`: Name of the database feature.
    *   `detected_usages`: Number of times the feature has been detected as used during the monitoring period.

Filtering for Used Features:

*   `where detected_usages > 0`: Focuses the results on features that have been actively used, excluding those with zero usage counts.

Displaying Final Output:

*   Presents a list of feature names and their corresponding usage counts, highlighting those that have been employed in the database environment.

Key Points:

• Feature Adoption Insights: Reveals which features are being utilized and to what extent, informing decisions about feature configuration, optimization, and potential license management.
• Usage Patterns: Helps understand how features are being employed, potentially identifying areas for improvement or optimization in their usage.
• Feature Enablement: Can be used to verify if expected features are actually being used, ensuring they are enabled and configured correctly.

Insights and Explanations:

• Optimization:

  • Understanding feature usage can guide optimization efforts, such as disabling unused features to conserve resources or tuning those with high usage for better performance.

• License Management:

  • In environments with licensed features, this information can help track usage and ensure compliance with licensing terms.

• Feature Testing and Evaluation:

  • Can aid in assessing the impact and value of newly introduced features or those under consideration for implementation.

• Customization:

  • Can be modified to filter for specific features or usage thresholds based on analysis needs.

• Regular Monitoring:

  • Incorporating this query into regular database monitoring and reporting can provide ongoing insights into feature usage trends and potential changes over time.