Your Tuning Arsenal AWR, ADDM, ASH, Metrics and Advisors
61664826 11gR1 Upgrade Companion
11gR2 Upgrade Companion
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Automatic SQL Tuning in Oracle Database 10g and 11g
Oracle 11g Nf 1.0
SQL TIPS
Oracle 11g New Features
Thomas Kyte's Top Things in Oracle Database 10g