[Exist-open] existdb errors on xQueries

[Sanil, S. <ss...@bl...>]

Hello,
We are getting some errors while running xQuery’s  all at once against our eXist database with 1.3 million files from different clients like browser, oxygen desktop, Postman.

The errors are “Error while processing /exist/xmlrpc: An unknown error occurred: org.apache.xmlrpc.XmlRpcException: I/O error while processing request”. . After that, the existdb instance hosted in the the cloud is not coming up. Is there a reason for this behavior? How do we avoid this in the future?

The xQuery we used are :
_query=//cite.bna.reference&_howmany=1000 , on a collection

Thanks
Seena Sanil