10g 10.2.1.0 

select * from dba_roles;

CONNECT                                                               创建session角色
RESOURCE                                                            创建资源角色,Create table 等等
DBA                                                                           数据库管理员角色
SELECT_CATALOG_ROLE                                 查看数据字典角色
EXECUTE_CATALOG_ROLE                              执行数据字典中部分函数的角色
DELETE_CATALOG_ROLE                                 删除sys.adu$记录的角色
EXP_FULL_DATABASE                                        全库导出角色
IMP_FULL_DATABASE                                         全库导入角色
RECOVERY_CATALOG_OWNER                      备份目录的拥有者 RMAN使用    
GATHER_SYSTEM_STATISTICS      
LOGSTDBY_ADMINISTRATOR         
AQ_ADMINISTRATOR_ROLE                             高级队列管理员角色
AQ_USER_ROLE                                                  高级队列使用者角色
GLOBAL_AQ_USER_ROLE              
SCHEDULER_ADMIN                                           调度管理者角色
HS_ADMIN_ROLE                                
AUTHENTICATEDUSER                    
OEM_ADVISOR                                    
OEM_MONITOR                                   
WM_ADMIN_ROLE                               
JAVAUSERPRIV                                   
JAVAIDPRIV                    
JAVASYSPRIV                   
JAVADEBUGPRIV                 
EJBCLIENT                     
JAVA_ADMIN                    
JAVA_DEPLOY                   
CTXAPP                        
XDBADMIN                      
XDBWEBSERVICES               
OLAP_DBA                      
OLAP_USER                     
MGMT_USER