A very good article : http://oracledoug.com/serendipity/index.php?/archives/1513-AWR-Differences-Report.html
also : http://www.dbasupport.com/oracle/ora10g/self_managed.shtml
rowlen surprise
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Here’s a little detail about Oracle’s calculation of
user_tables.avg_row_len that I hadn’t noticed before – and I really should
have noticed it years ago, ...
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