PROC OPTGRAPH can handle graphs that contain up to 2,147,483,647 nodes. The maximum number of links it can handle depends on the execution mode in which it runs. In single-machine mode, the maximum number of links is 2,147,483,647. In alongside-the-database distributed mode, the maximum number of links on each distributed node is 2,147,483,647. However, there is no limit on the total number of links across all nodes of the appliance.