use profile as mentioned below and set parameters to control the I/O like :-

LOGICAL_READS_PER_SESSION unlimited LOGICAL_READS_PER_CALL 100

example statement to create profile
read more in doc on profile

CREATE PROFILE clerk LIMIT
SESSIONS_PER_USER 2
CPU_PER_SESSION unlimited
CPU_PER_CALL 6000
LOGICAL_READS_PER_SESSION unlimited
LOGICAL_READS_PER_CALL 100
IDLE_TIME 30
CONNECT_TIME 480;



[Edited by anujpathak on 04-11-2002 at 07:04 AM]