I am trying to Export a SDE to a XML Workspace Document but it fails each time. I used the tool in the catalog tree by right clicking the SDE and I've tried the Toolbox tool, both with no luck. I have run the tool several times with the following errors, "XML export failed, Out of Client Memory", or ArcCatalog completely fails and closes, or "XML export failed Underlying DBMS error." The SDE is rather large and has many attachments. I am running Server 10.3 and using ArcGIS Desktop 10.5.1. Does anyone have a suggestion or alternative?