检索用户可选择的所有表（在Oracle中）

Question

如何检索用户具有SELECT权限（直接授予或通过指定角色授予）的所有表的列表？

Answer 1

select owner||'.'||table_name from user_tab_privs where privilege='SELECT'
union 
select rtp.owner||'.'||rtp.table_name from user_role_privs urp, role_tab_privs rtp
  where urp.granted_role = rtp.role and rtp.privilege='SELECT'
union
select user||'.'||table_name from user_tables;

Answer 2

select table_name from TABLE_PRIVILEGES where grantee='USER' and select_priv='Y'
union
select table_name from  user_tables