Thank you for your response!

Were you able to see any (error-) message in the server window?

I could not see any message in the server window as it was directly closed.

On you 64-bit hardware, are you running 64-bit or 32-bit windows? If 64-bit, did you install the 64-bit or 32-bit MonetDB/XQuery?

I am using 32-bit windows.

The serialized size ("1 GB") does not say much about the actual complexity of the XML document, e.g., how many nodes, attributes, etc. does the document contain? Do you know these statistics, or could you share your document with us for testing?

I tested using XBench DCSD. The total numbers of nodes and attributes were almost 22-23 millions and 1.5 millions, respectively. Thanks! John