ORA-54006: keyword VISIBLE cannot be specified here
Cause: The keyword VISIBLE was either repeated or incorrectly specified.
Action: Remove the keyword from the specified syntax.
。
ORA-54006: keyword VISIBLE cannot be specified here是Oracle数据库的一个异常，当用户试图将可视性子句添加到SESSION或APPLICATION约束语句时会发生此错误。
ALTER SESSION SET CONSTRAINT VISIBLE;
ALTER APPLICATION SET CONSTRAINT VISIBLE;