Which is NOT a characteristic of a similarity search in Oracle Database?

In the context of similarity search in Oracle Database, a defining characteristic is the processing of high-dimensional data, which makes options highlighting such features like support for high-dimensional operations, seamless integration with additional database functionalities, and the ability to optimize for speed or accuracy accurate portrayals of the capabilities of these systems.

However, the assertion that similarity search guarantees timely results irrespective of dataset size is not accurate. The performance of a similarity search can be influenced by various factors, including the size of the dataset. As datasets grow larger, the complexity and time required for processing may also increase, making it unrealistic to expect consistent timeliness regardless of how extensive the data is. Therefore, this characteristic does not hold true for similarity searches in Oracle Database, setting it apart as the option that stands out as incorrect.