select * from dba_users where username = '用户名' ; (查询)
create user "用户名" identifled by "密码" ; (创建:密码要符合oracle的创建规则,否则报错)
drop user "用户名"; (删除)
select * from dba_users where username = '用户名' ; (查询)
create user "用户名" identifled by "密码" ; (创建:密码要符合oracle的创建规则,否则报错)
drop user "用户名"; (删除)