How do you enable logging for database changes in HANA?

To enable logging for database changes in HANA, adjusting the logging settings in the HANA system configuration is the correct approach. This is where you can control how and what types of operations within the database are logged. By modifying these settings, you ensure that transaction logs are generated and maintained, which is crucial for recovery, auditing, and monitoring purposes.

The logging settings provide detailed options that can significantly affect performance and data retention, including settings for the persistence of logs, the maximum size of logs, and the criteria for archiving them. Proper configuration ensures that significant changes to the database are recorded, allowing for precise tracking and recovery actions when needed.

Other methods, such as configuring user roles and permissions, are focused on access control rather than logging operations. Setting data availability settings often pertains to replication and distribution of data rather than logging mechanisms. Installing additional logging software may not be necessary, as HANA natively supports various logging features within its architecture. Therefore, modifying the HANA system's built-in logging settings is the most effective and correct method to enable logging for database changes.