Write records into a file

Question

CREATE OR REPLACE PROCEDURE test IS
    cursor    cur is
      select dname||';'||loc dnlo
      from   dept;
  rec          cur%ROWTYPE;
  v_returncode number;
BEGIN
   open cur;
   loop
       fetch cur into rec;
       exit when cur%notfound;
       v_returncode:= write_file(rec.dnlo);
       dbms_output.put_line(rec.dnlo);
   end loop;
   close cur;
END test;
SQL> exec test
ACCOUNTING;NEW YORK
RESEARCH;DALLAS
SALES;CHICAGO
OPERATIONS;BOSTON
SALES;LAS VEGAS
PL/SQL-Prozedur wurde erfolgreich abgeschlossen.
SQL> The program wrote 5 records into the file.txt (5 calls). Normally i must write
at about 2 million records into the file. It is possible, to write the records into
the file with one call, like a array or a ref_cursor (input parameter of the function write_file) instead of calling the function 2 millon times in a loop?
Message was edited by:
mad

Answer 1

Couldn't help commenting cos that has got to be one of the best drive/folder name combinations I've seen in a long time. :))
v_FileHandle:= UTL_FILE.FOPEN('s:\hit', v_FileName, p_FileModus, C_MAXLINESIZE);Seriously though, when working with UTL_FILE you should use directory objects to ensure proper security... note...
The UTL_FILE_DIR parameter has been deprecated by oracle in favour of direcory objects because of it's security problems.
The correct thing to do is to create a directory object e.g.:
CREATE OR REPLACE DIRECTORY mydir AS 'c:\myfiles';Note: This does not create the directory on the file system. You have to do that yourself and ensure that oracle has permission to read/write to that file system directory.
Then, grant permission to the users who require access e.g....
GRANT READ,WRITE ON DIRECTORY mydir TO myuser;
Then use that directory object inside your FOPEN statement e.g.
fh := UTL_FILE.FOPEN('MYDIR', 'myfile.txt', 'r');Note: You MUST specify the directory object name in quotes and in UPPER case for this to work as it is a string that is referring to a database object name which will have been stored in uppercase by default.
;)