Oracle Hints SQL PL/SQL Decent overview of hints you can use in either PL/SQL or SQL routines. Especially helpful for me was CACHE hint that I used in Subquery factoring (WITH clause). with 11gcachehinthintsoracleplsqlsql
PL/SQL Practices First Things First -- mentions new Oracle 11g PL/SQL capabilities. Suggests some good practices development and ways of testing, profiling code with dbms_hprofdbms_profilerplscope