That's OS related thing. Might be one of your ulimits or simply asking too much :-) What's your OS? Also, check v$sesstat for max pga memory allocation for your spatial session -- what's the number there? > Is there anything wrong ? -- Alex Fatkulin, http://afatkulin.blogspot.com http://www.linkedin.com/in/alexfatkulin -- //www.freelists.org/webpage/oracle-l