Open the output file for writing : File Write with UTL_FILE « System Packages « Oracle PL/SQL Tutorial

1. Oracle PL/SQL Tutorial
2. System Packages
3. File Write with UTL_FILE

SQL>
SQL> CREATE TABLE myClob
  2  (id NUMBER PRIMARY KEY,
  3   clob_data CLOB);

Table created.

SQL>
SQL> DECLARE
  2    clob_pointer CLOB;
  3    v_Buf VARCHAR2(1000);
  4    Amount BINARY_INTEGER :=1000;
  5    Position INTEGER :=1;
  6    fp UTL_FILE.FILE_TYPE;
  7  BEGIN
  8
  9    insert into myClob values (1,EMPTY_CLOB());
 10
 11    SELECT clob_data INTO clob_pointer FROM myClob WHERE id = 1;
 12
 13    if (DBMS_LOB.ISOPEN(clob_pointer)!=1) then
 14      DBMS_LOB.OPEN (clob_pointer,DBMS_LOB.LOB_READONLY);
 15    end if;
 16
 17    fp :=UTL_FILE.FOPEN('BFILE_DIR','output.dat','w');
 18
 19    LOOP
 20      BEGIN
 21        DBMS_LOB.READ (clob_pointer,Amount,Position,v_Buf);
 22
 23        UTL_FILE.PUT_LINE(fp,v_Buf,TRUE);
 24
 25        Position :=Position +Amount;
 26
 27      EXCEPTION
 28
 29        WHEN NO_DATA_FOUND THEN
 30
 31          EXIT;
 32
 33      END;
 34
 35    END LOOP;
 36
 37    UTL_FILE.FCLOSE(fp);
 38
 39    DBMS_LOB.CLOSE (clob_pointer);
 40  END;
 41  /


SQL>
SQL> drop table myClob;

Table dropped.