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

When doing export with expdp occur next error:

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

Solution is simple let's check directories:

SQL> select directory_name, directory_path from dba_directories
DIRECTORY_NAME     DIRECTORY_PATH
——————————————————————————–
DUMP_DIR       /u02/dump_dir

Two thing's that hadn't done is:

1) given correct permissions for that user to acccess the logical directory for export:

SQL> GRANT read, write on directory dump_dir TO ika; <-- username

2) create the physical directory, remember that in linux characters are different with uppercase and lowercase

[oracle@oel6]$ mkdir -p /u02/dump_dir

after that our export run successfully.