Need help on Reading BFILE, CLOB

Question

Hi all
i am using Linux fedora 4
i have created a directory
create directory clob_dir as '/db10g/my_dir';
and created a table from examples of a book i have
CREATE TABLE BFILE_DOC
(     ID INTEGER,
     BFILE_CLMN BFILE
And a procedure to read a text file contents
CREATE OR REPLACE
PROCEDURE FILE_EXAMPLE (id_var in number) AS
SRC_BFILE_VAR BFILE;
DIR_ALIAS_VAR VARCHAR2(50);
FILENAME_VAR VARCHAR2(50);
CHUNK_SIZE_VAR INTEGER;
LENGTH_VAR INTEGER;
CHARS_READ_VAR INTEGER;
DEST_CLOB_VAR NCLOB;
AMOUNT_VAR INTEGER := 80;
DEST_OFFSET_VAR INTEGER := 1;
SRC_OFFSET_VAR INTEGER := 1;
CHAR_BUFFER_VAR VARCHAR2(160);
BEGIN
SELECT BFILE_CLMN
INTO SRC_BFILE_VAR
FROM BFILE_DOC
WHERE ID = id_var;
DBMS_LOB.CREATETEMPORARY(DEST_CLOB_VAR, TRUE);
IF (DBMS_LOB.FILEEXISTS(SRC_BFILE_VAR) = 1) THEN
IF (DBMS_LOB.FILEISOPEN(SRC_BFILE_VAR) = 0) THEN
DBMS_LOB.FILEOPEN(SRC_BFILE_VAR);
DBMS_LOB.FILEGETNAME(SRC_BFILE_VAR,
DIR_ALIAS_VAR,
FILENAME_VAR);
DBMS_OUTPUT.PUT_LINE('DIRECTORY NAME: ' || DIR_ALIAS_VAR);
DBMS_OUTPUT.PUT_LINE('FILE NAME : ' || FILENAME_VAR );
CHUNK_SIZE_VAR := DBMS_LOB.GETCHUNKSIZE(DEST_CLOB_VAR);
DBMS_OUTPUT.PUT_LINE('CHUNK SIZE : ' || CHUNK_SIZE_VAR);
LENGTH_VAR := DBMS_LOB.GETLENGTH(SRC_BFILE_VAR);
DBMS_OUTPUT.PUT_LINE('LENGTH : ' || LENGTH_VAR);
CHARS_READ_VAR := 0;
WHILE (CHARS_READ_VAR < LENGTH_VAR) LOOP
IF (LENGTH_VAR - CHARS_READ_VAR < AMOUNT_VAR) THEN
AMOUNT_VAR := LENGTH_VAR - CHARS_READ_VAR;
END IF;
DBMS_LOB.LOADFROMFILE(DEST_CLOB_VAR, SRC_BFILE_VAR,
AMOUNT_VAR, DEST_OFFSET_VAR,
SRC_OFFSET_VAR + CHARS_READ_VAR);
DBMS_LOB.READ(DEST_CLOB_VAR,
AMOUNT_VAR,
SRC_OFFSET_VAR,
CHAR_BUFFER_VAR);
DBMS_OUTPUT.PUT_LINE('CHAR BUFFER VAR:' || CHAR_BUFFER_VAR);
CHARS_READ_VAR := CHARS_READ_VAR + AMOUNT_VAR;
END LOOP;
END IF ;
END IF;
DBMS_LOB.FILECLOSE(SRC_BFILE_VAR);
DBMS_LOB.FREETEMPORARY(DEST_CLOB_VAR);
END FILE_EXAMPLE;
then i post a text file ( the size is 456.5 KB) in MY_DIR FOLDER
the i inserted the informatin in that table
INSERT INTO BFILE_DOC( ID , BFILE_CLMN)
VALUES (1, BFILENAME('CLOB_DIR', 'abc.txt'));
Then i called the procedure
SQL> call file_example(1);
here what i got
CHAR BUFFER VAR:噁‰㐳㔠〵㨲㔠††††††††††††††䥓单䕄㨠〷⼳〯〶†䩅䐠䉁卅†ਠⴭⴭⴭⴭ
CHAR BUFFER VAR:†††ਠ㈹䙒††††㜷䈠⁇噁‰㔳㔠⁆剁‰†䥓单䕄㨠〷⼳〯〶†䩅䐠䉁卅†ਠⴭⴭⴭⴭ
CHAR BUFFER VAR:㜰㔠〱㨳〠††††††††††††††††䥓单䕄㨠〷⼳〯〶†䩅䐠䉁卅†ਠⴭⴭⴭⴭ
CHAR BUFFER VAR:†ਠ††††††䵁剉呉䴠䡏呅䰠††††††䥓单䕄㨠〷⼳〯〶†䩅䐠䉁卅†ਠⴭⴭⴭⴭ
CHAR BUFFER VAR:††††〶㨵㔠〹㨵㔠〶㨵㔠⁆剁†㜷㨴〠ਠ†䥓单䕄㨠〷⼳〯〶†䩅䐠䉁卅†ਠⴭⴭⴭⴭ
CHAR BUFFER VAR:〲䵏†‱㠶†㜷䈠⁆剁‱㈴㔠⁇噁‱㐰〠〱㨱†䥓单䕄㨠〷⼳〯〶†䩅䐠䉁卅†ਠⴭⴭⴭⴭ
call file_example(1)
ERROR at line 1:
ORA-20000: ORU-10027: buffer overflow, limit of 1000000 bytes
ORA-06512: at "SYS.DBMS_OUTPUT", line 32
ORA-06512: at "SYS.DBMS_OUTPUT", line 97
ORA-06512: at "SYS.DBMS_OUTPUT", line 112
ORA-06512: at "SCOTT.FILE_EXAMPLE", line 51
and here a sample of the content in the text file if i open it with text editor
1 MO REPORT AT 12:35 EFFECTIVE SEP 04-SEP 18
1 SA
DAY FLT: EQP DEPARTS ARRIVES BLK. BLK: DUTY CR: LAYOVER
MO 034 744 JED 1405 RUH 1540 01:35
SAHARA AIRPORT HOTEL 01:35 03:35 01:35 RUH 19:05
TU 1905 AB3 RUH 1045 TIF 1215 01:30
TU 1904 AB3 TIF 1315 RUH 1440 01:25
TU 1783 AB3 RUH 1540 GIZ 1730 01:50
TU 1777 AB3 GIZ 1820 JED 1930 01:10
05:55 10:45 05:55
CREDIT_HRS: 07:30 BLK_HRS: 07:30 LDGS: 5 TAFB 31:25
2 MO REPORT AT 21:25 EFFECTIVE SEP 04-SEP 18
1 SA
DAY FLT: EQP DEPARTS ARRIVES BLK. BLK: DUTY CR: LAYOVER
MO 113 77B JED 2255 LHR 0520 06:25
HILTON LONDON KENSIN 06:25 08:25 06:25 LHR 38:25
WE 116 77B LHR 1945 JED 0150 06:05
06:05 08:05 06:05
CREDIT_HRS: 12:30 BLK_HRS: 12:30 LDGS: 2 TAFB 52:55
( the text file has more than 6000 line)
notes:
my ENV file ( bash_profile)
# .db10g
# Get the aliases and functions
if [ -f ~/.bashrc ]; then
     . ~/.bashrc
fi
# User specific environment and startup programs
PATH=$PATH:$HOME/bin; export PATH
ORACLE_BASE=/db10g/app/oracle; export ORACLE_BASE
ORACLE_HOME=$ORACLE_BASE/product/10.2.0/db_1; export ORACLE_HOME
ORACLE_SID=orcl; export ORACLE_SID
ORACLE_TERM=xterm; export ORACLE_TERM
PATH=/usr/sbin:$PATH; export PATH
PATH=$ORACLE_HOME/bin:$PATH; export PATH
NLS_LANG=AMERICAN_AMERICA.AL32UTF8; export NLS_LANG
LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib; export LD_LIBRARY_PATH
CLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib; export CLASSPATH
unset USERNAME
The charset of the database is set to AL32UTF8. during the installtion time
The questions :
Whats wrong here?
why i can not read the content of the txt file as it is ?
i tried this issue in windows xp with SQL*PLUS, i got the same chars but no error.
what to do to avoid the errors and to see the text file as its?
how to load the content of the text file to CLOB Column if it is larger than 4000?
thanks

Answer 1

set serveroutput on
BEGIN
-- Enable DBMS_OUTPUT and set the buffer size. The buffer size can be between 1 and 1,000,000
dbms_output.enable(1000000);
END;
check the datatypes of the supplied packages from the doumentation;
dbms_output.put_line(item VARCHAR2);
dbms_lob.read(
lob_loc IN BLOB,
amount IN OUT NOCOPY INTEGER,
offset IN INTEGER,
buffer OUT RAW);
also sample usage of the package will help -> http://psoug.org/reference/dbms_lob.html