Dissolve limits the creation of extremely large features based on the relation of feature size to available memory. Complex features—that is, features with a large number of vertices—are the frequent cause. In such cases, smaller, more manageable features will be created.
Simplify your inputs.
- Complex inputs can be generalized to remove the number of vertices Dissolve handles. Inputs can be generalized (to an intermediate dataset) using tools in the Generalization toolset.
- Close other unnecessary applications. Increasing virtual memory will improve Dissolve performance. Virtual memory is used when your system runs out of physical memory.
- If practical, consider using smaller subsets of your input. Tools such as Select Layer By Attribute or Select Layer By Location can be used to select specific features from a layer. Learn more about creating and using layer selections.