PGX is a research artifact from Oracle Labs, whereas the current OTN release is a technology preview version of it. Henceforth, this release is intended for information purpose only, and may not be incorporated into any contract. This is not a commitment to deliver any material, code, or functionality to Oracle products, and thus should not be relied upon in making any purchase decisions. The development, release and timing of any features or functionality described for products of Oracle remains at the sole discretion of Oracle.
Changing the separator in the GraphConfig as mentioned in the documentation currently does not work for graphs represented in the adjacency list format. Please make sure your graph uses tabs ('\t') as separators or use a different graph format.
When you load a graph, then change the graph and try to load the same graph again, the PGX engine will assume it is the same graph and give you a cached result. Use Core.refreshGraphWithProperties() instead to reload the graph.