My most recent response still applies.
The Ignition setting that may impact this is the Table List Filter. If the database has a lot of system tables, or other tables that shouldn’t be listed for the user/schema you are targeting, then you can try to filter them out with that translator setting. That setting is located on the Gateway webpage > Config > Databases > Drivers
Try to load either database in a different GUI tool or client to know more about what tables the database is trying to list.