we start from academics.
Oracle 11g Database the complete refernce by osborne oracle press.
oracle-database-11g-the-complete-reference-osborne-oracle-press-series.9780071598750.43441.pdf
http://rapidshare.com/files/287801783/oracle-database-11g-the-complete-reference-osborne-oracle-press-series.9780071598750.43441.pdf
Oracle 9i Oracle certified associate OCA exam guide and dumps
http://rapidshare.com/files/287881559/007_1.pdf
http://rapidshare.com/files/287888628/007_2.pdf
Introduction_to_Oracle9i_SQL_-_Volume_I.pdf
http://rapidshare.com/files/287776960/Introduction_to_Oracle9i_SQL_-_Volume_I.pdf
TEST KING OCA EXAM GUIDE SIMULATOR
http://rapidshare.com/files/287892198/SQL_Exam_Guide.zip