ORA-29283 invalid file operation - impdp导入数据

oerr ora 29283
29283, 00000, "invalid file operation%s"
// *Cause: An attempt was made to read from a file or directory that does
// not exist, or file or directory access was denied by the
// operating system.
// *Action: Verify file and directory access privileges on the file system,
// and if reading, verify that the file exists.


使用impdp导入数据，dump文件名为bop_1112.dump，directory为：dataBackup和/data_backup；报错信息如下：

ORA-39002: invalid operation
ORA-39070: Unable to open the log file.
ORA-29283: invalid file operation
ORA-06512: at "SYS.UTL_FILE", line 536
ORA-29283: invalid file operation

解决：这个错误的原因通常有：
1、存放dump文件的路径是否存在？
2、dump文件是否存在？
3、dump文件的权限是否对？
4、存放dump文件的路径是否有权限？

最后发现存放dump文件的路径权限有问题，不知道什么时候/data_backup的权限变为了另一个用户的权限：phtexun:phtexun，
正确的权限应当为：oracle:oinstall；

修改一下文件夹的权限即可：
# chown oracle:oinstall /data_backup