问将文件写入Oracle Amazon-RDS上的自定义创建目录

EN

sqlplus stepdba/<password>@steprds.<rds-hash-here>.<region>.rds.amazonaws.com:1521/STEP

DECLARE
    fileHandler UTL_FILE.FILE_TYPE;
BEGIN
   fileHandler := UTL_FILE.FOPEN('MY_DIR', 'test.txt', 'W');
   UTL_FILE.PUTF(fileHandler, 'Writing TO a file\n');
   UTL_FILE.FCLOSE(fileHandler);
END;
/

ERROR at line 1:
ORA-29283: invalid file operation
ORA-06512: at "SYS.UTL_FILE", line 536
ORA-29283: invalid file operation
ORA-06512: at line 4

select grantee, privilege from dba_tab_privs where table_name='DATA_PUMP_DIR' and grantee = 'STEPDBA';
select grantee, privilege from dba_tab_privs where table_name='MY_DIR' and grantee = 'STEPDBA';