http://www.mybiznas.com/oracle4arab/SQL_8I/advanced sql.zip
http://www.mybiznas.com/oracle4arab/SQL_8I/intro-sql-plsql1.zip
http://www.mybiznas.com/oracle4arab/SQL_8I/intro-sql-plsql2 .zip
http://www.mybiznas.com/oracle4arab/SQL_8I/pl-sql.zip