Darryl,
Since you didn't say what version of Oracle you are using, I'll refer you to
information about 8i.
Try the following links:
http://www.oracle.com/oramag/oracle/00-Mar/index.html?o20tun.html
<http://www.oracle.com/oramag/oracle/00-Mar/index.html?o20tun.html>
http://www.oracle.com/oramag/oracle/00-sep/index.html?o50tun.html
<http://www.oracle.com/oramag/oracle/00-sep/index.html?o50tun.html>
http://www.oracle.com/oramag/oracle/00-nov/index.html?o60tun.html
<http://www.oracle.com/oramag/oracle/00-nov/index.html?o60tun.html>
http://www.oracle.com/oramag/oracle/00-nov/index.html?o60tun_ol.html
<http://www.oracle.com/oramag/oracle/00-nov/index.html?o60tun_ol.html>
Regards,
Dez
Oracle LazyDBA home page