High CPU Usage Problem

Hey Gurus,
 I have a problem where during heavy updates, insert statements the  CPU usage on the Digital UNIX system that we have Oracle 7.3 on increases very much. Just two processes the sqlplus session and the SNAP replication process use up about 50 % of the CPU , which makes the other application users scream. I was wondering as to what might be the cause of the same. Does anybody have an idea ? Any comments, suggestions, experiences are welcome.

                                Thanks a lot

                                                Tapan Received on Mon Aug 09 1999 - 17:46:16 CDT