When running DWCC via Docker to catalog large bodies of metadata (e.g., a data source with hundreds or thousands of tables and many thousands of columns), you might exhaust the available memory in the docker container for the DWCC process. To address this problem, increase the memory available to Docker. On Windows and MacOS, this is handled via a Docker desktop preference change. If you are running this on a native Linux host, the Docker host and native host are the same (so memory available to Docker is all machine memory). On a Mac, e.g., go to Docker preferences:
And select Resources > Advanced. In this example the memory allowance is set to 2 GB. Increase it to 4 GB by moving the slider for Memory:
You can also increase the memory available to the DWCC container by terminating other containers running within the Docker host.