Which predefined service connection should you use when running lots of high concurrent queries in Autonomous Database?

When running a large number of high concurrent queries in Oracle Autonomous Database, the predefined service connection that is most appropriate is one designed to handle high concurrency and query performance. In this context, the option that best aligns with this requirement is the service connection designated for high concurrency workloads.

Using a connection for high concurrency, such as the one identified as DBNAME_HIGH, enables the database to efficiently manage the workload generated by simultaneous queries. This service connection can better utilize resources and optimize query execution plans to handle multiple concurrent sessions effectively.

Higher concurrency service connections are specifically tailored for scenarios where many users or processes are accessing the database at the same time, ensuring that performance remains stable and efficient even under heavy loads.

In summary, selecting a service connection like DBNAME_HIGH is critical for optimizing the performance of high-concurrency queries in Oracle Autonomous Database, as it is designed to provide the necessary resource management and performance tuning required for such use cases.