echo 1 > /proc/sys/vm/drop_caches ( as of 2.6 kernel )
http://mtj.wordpress.com/2006/10/18/clearing-linux-filesystem-read-cache/
rowlen surprise
-
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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