ORA-39002: invalid operation

今天有个同事使用expdp时报错：

ORA-39002: invalid operation
ORA-39070: Unable to open the log file.
ORA-29283: invalid file operation
ORA-06512: at "SYS.UTL_FILE", line 475
ORA-29283: invalid file operation

发现原因如下：

SQL> create or replace directory dpdata
 2    as '/home/oracle/backup';

Directory created.

发现原来他的目录设错了。只要将路径设好，再授权一下就可以。