如何从数据库中获取登录用户的名称？

Question

More specifically an Oracle database. Say I am logged in as foo . How do I get the name?

Also does this pose a security risk if the name is exposed to someone?

Answer 1

SELECT user, uid FROM dual

From http://sqlzoo.net/howto/source/z.dir/tip492545/oracle

(First google hit on "oracle whoami")

Answer 2

in sqlplus you can just type

show user

Answer 3

Another option:

SELECT * from user_users

I'd personally probably use the USER function (as stated by Stefan in one of the other answers) by using select user from dual or something similar but it's good to have other options.