When I run this portion of my code, which is inside a package, I get an error (specifically at the l_cnt := 1_cnt + 1 line for some reason and the code crashes. What could I be doing wrong? I am trying to read in a file of certs. Here's what I have so far:
v_certList arr_claims_t := arr_claims_t();
v_certLst VARCHAR2(2000);
f UTL_FILE.FILE_TYPE;
s VARCHAR2(200);
-- used for looping
l_cnt simple_integer := 0;
/*cop procedure*/
PROCEDURE COP_DATALOAD_V2 AS
arr_claims arr_claims_t;
arr_sql arr_sql_t;
BEGIN
f := UTL_FILE.FOPEN('V_COP',
'certs_file.txt',
'R',
2500);
-- populata our v_certlist of arr_claims_t
loop
utl_file.get_line(f, s);
v_certList.extend();
l_cnt := l_cnt+1;
v_certList(l_cnt) := s;
end loop;
exception
when no_data_found then
utl_file.fclose(f);
I want the array to be succesfuly populated given a text file (and I understand this is not the best practice but this is what I will have to do for now)
I figured out the error! The s that it was reading in was too big for the array. This was because empty spaces in the files was included.
v_certList.extend(1);
l_cnt := l_cnt + 1;
v_certList(l_cnt) := substr(s,
0,
10)
This fixed it for me.
Related
good afternoon,
I am in need of help to read a field in the Oracle database.
I have a long raw field that contains a pdf and I need to save it to a file.
Does anyone have any suggestions on how I can do it?
If you have access to Oracle Support, there is an example in Doc ID 1433573.1
Sample Procedure
CREATE OR REPLACE PROCEDURE WritePDFToFILE (myfilename IN VARCHAR2)
IS
v_blob BLOB;
blob_length INTEGER;
out_file UTL_FILE.FILE_TYPE;
-- chunk size and buffer size must match
chunk_size BINARY_INTEGER := 32767;
v_buffer RAW (32767);
blob_position INTEGER := 1;
BEGIN
-- Retrieve the BLOB for reading
SELECT filedata
INTO v_blob
FROM blob_pdf_tbl
WHERE filename = myfilename;
-- Retrieve the SIZE of the BLOB
blob_length := DBMS_LOB.GETLENGTH (v_blob);
-- Open a handle to the location where you are going to write the BLOB to a file
-- NOTE: The 'wb' parameter means "write in byte mode" and is only availabe
-- in the UTL_FILE package with Oracle 10g or later
out_file :=
UTL_FILE.FOPEN ('PDF_DIR_LOC',
myfilename,
'wb',
chunk_size);
-- Write the BLOB to file in chunks
WHILE blob_position <= blob_length
LOOP
IF blob_position + chunk_size - 1 > blob_length
THEN
chunk_size := blob_length - blob_position + 1;
END IF;
DBMS_LOB.READ (v_blob,
chunk_size,
blob_position,
v_buffer);
UTL_FILE.PUT_RAW (out_file, v_buffer, TRUE);
blob_position := blob_position + chunk_size;
END LOOP;
-- Close the file handle
UTL_FILE.FCLOSE (out_file);
END;
/
my_images table consists of a blob column called images. I need to write these images to my image_dir which is 'C:\TEMP'.
When the following PL/SQL code is executed, only the first image is written to the directory as an image. The second blob is written as 0 byte (empty) and there is no other (Should be a total number of 8).
So the loop does not seem to work correctly. I am using Oracle 11g Express Edition (XE) and SQL Developer. Here is the error and the code:
Error starting at line : 53 in command -
BEGIN write_blob_to_file_v5; END;
Error report -
ORA-01403: no data found
ORA-06512: at "SYS.DBMS_LOB", line 1056
ORA-06512: at "SYS.WRITE_BLOB_TO_FILE_V5", line 40
ORA-06512: at line 1
01403. 00000 - "no data found"
*Cause: No data was found from the objects.
*Action: There was no data from the objects which may be due to end of fetch.
PL/SQL code
CREATE OR REPLACE PROCEDURE write_blob_to_file_v5
AS
v_lob_image_name VARCHAR (100);
v_lob_image_id NUMBER;
v_blob BLOB;
v_buffer RAW (32767);
v_buffer_size BINARY_INTEGER;
v_amount BINARY_INTEGER;
v_offset NUMBER (38) := 1;
v_chunksize INTEGER;
v_out_file UTL_FILE.file_type;
BEGIN
FOR i IN (SELECT DBMS_LOB.getlength (v_blob) v_len,
image_id v_lob_image_id,
"IMAGE_NAME" v_lob_image_name,
image v_blob
FROM sys.MY_IMAGES)
LOOP
v_chunksize := DBMS_LOB.getchunksize (i.v_blob);
IF (v_chunksize < 32767)
THEN
v_buffer_size := v_chunksize;
ELSE
v_buffer_size := 32767;
END IF;
v_amount := v_buffer_size;
DBMS_LOB.open (i.v_blob, DBMS_LOB.lob_readonly);
v_out_file :=
UTL_FILE.fopen (
location => 'IMAGE_DIR',
filename => ( ''
|| i.v_lob_image_id
|| '_'
|| i.v_lob_image_name
|| '.JPG'),
open_mode => 'wb',
max_linesize => 32767);
WHILE v_amount >= v_buffer_size
LOOP
DBMS_LOB.read (i.v_blob,
v_amount,
v_offset,
v_buffer);
v_offset := v_offset + v_amount;
UTL_FILE.put_raw (file => v_out_file,
buffer => v_buffer,
autoflush => TRUE);
UTL_FILE.fflush (file => v_out_file);
--utl_file.new_line(file => v_out_file);
END LOOP;
UTL_FILE.fflush (v_out_file);
UTL_FILE.fclose (v_out_file);
DBMS_LOB.close (i.v_blob);
END LOOP;
END;
The main problem is related NOT to re-initialize the parameter v_offset to 1 ( as in the declaration section ) :
v_offset := 1;
for every image id just before
v_chunksize := dbms_lob.getchunksize(i.v_blob);
assignment.
Moreover, the problem may arise about not yet closed or already opened blobs. To prevent these,
replace
dbms_lob.open(i.v_blob,dbms_lob.lob_readonly);
with
if ( dbms_lob.isopen(i.v_blob)=0 ) then
dbms_lob.open(i.v_blob,dbms_lob.lob_readonly);
end if;
and
replace
dbms_lob.close(i.v_blob);
with
if ( dbms_lob.isopen(i.v_blob)=1 ) then
dbms_lob.close(i.v_blob);
end if;
I have made a Delphi application, which inserts a row into Firebird database.
There was a problem with a query which a solved via CommitRetaining, but I read that it is not right thing to use, because it may affect the server being more slow. Strange thing happens when I use Commit only, query runs ok, but when I want to see if the row is inserted, Retainingit isn't. It only gets inserted on application terminate. But when using CommitRetaining, the row is inserted instantly.
What may cause the problem?
EDIT: Code using CommitRetaining
adqPom := TADQuery.Create(nil);
adqPom.Connection := form1.ADOConnection1;
adTransakcija := TADTransaction.Create(nil);
adTransakcija.Connection:=form1.ADOConnection1;
adqPom.Transaction:=adTransakcija;
adTransakcija.StartTransaction;
try
with adqPom do
begin
close;
sql.Clear;
sql.Add('insert into uplate(sifra,b_prijema,magacin,datum,iznos,b_uplate,b_izvoda,banka,godina,tr_rac,datum_dokument)');
sql.Add('values(:S,:BP,:M,:D,:I,:BU,:BI,:B,:G,:TR,:DD)');
ParamByName('S').Value := strtoint(edit1.Text);
if Form15.adoqDostavn.FieldValues['A1'] = 3 then
edit3.Text := '99999';
ParamByName('BP').Value := edit3.Text;
ParamByName('M').Value := edit2.Text;
ParamByName('D').Value := strtodate(edit4.Text);
ParamByName('I').Value := StrToFloat(edit5.Text);
ParamByName('BU').Value := Br_Uplate+1;
ParamByName('BI').Value := strtoint(Edit6.Text);
ParamByName('B').Value := Edit8.Text;
ParamByName('G').Value := 2006;
if Form15.adoqDostavn.FieldValues['A1'] = 3 then
ParamByName('TR').Value:= form15.adoqDostavn.FieldValues['B_PRIJEMA']
else
ParamByName('TR').Value:= Form15.adoqDostavn.FieldValues['B_DOST'];
ParamByName('DD').Value:=StrToDate(edit9.Text);
ExecSQL;
end;
adTransakcija.CommitRetaining;
except
adTransakcija.RollbackRetaining;
raise;
end;
FreeAndNil(adTransakcija);
FreeAndNil(adqPom);
EDIT: Code using Commit (actually property of a query is set to autocommit)
adqPom := TADQuery.Create(nil);
adqPom.Connection := form1.ADOConnection1;
with adqPom do
begin
close;
sql.Clear;
sql.Add('insert into uplate(sifra,b_prijema,magacin,datum,iznos,b_uplate,b_izvoda,banka,godina,tr_rac,datum_dokument)');
sql.Add('values(:S,:BP,:M,:D,:I,:BU,:BI,:B,:G,:TR,:DD)');
ParamByName('S').Value := strtoint(edit1.Text);
if Form15.adoqDostavn.FieldValues['A1'] = 3 then
edit3.Text := '99999';
ParamByName('BP').Value := edit3.Text;
ParamByName('M').Value := edit2.Text;
ParamByName('D').Value := strtodate(edit4.Text);
ParamByName('I').Value := StrToFloat(edit5.Text);
ParamByName('BU').Value := Br_Uplate+1;
ParamByName('BI').Value := strtoint(Edit6.Text);
ParamByName('B').Value := Edit8.Text;
ParamByName('G').Value := 2006;
if Form15.adoqDostavn.FieldValues['A1'] = 3 then
ParamByName('TR').Value:= form15.adoqDostavn.FieldValues['B_PRIJEMA']
else
ParamByName('TR').Value:= Form15.adoqDostavn.FieldValues['B_DOST'];
ParamByName('DD').Value:=StrToDate(edit9.Text);
ExecSQL;
end;
FreeAndNil(adqPom);
Commit free the transaction environment and CommitRetaining is a Commit that not free the transaction environment (cursors still open). You can use CommitRetaining in a process but at the end you must use Commit to release the memory.
Usually CommitRetainning is used to optimize a process (that include a big number of Begin/Commit), but at the end of you must this process use Commit to clear memory.
I'm learn PLSQL Collections and now I'm practicing associativa Arrays, first step, I've used PLSQL Methods for collections (FIRST, LAST, COUNT, PRIOR) and I've coded a simple LOOP for print on screen all the information within associative variable. It's a simple example about players of a random football team but I don´t understand the steps to code a loop using collections. This Loop is working fine but I don't understand the procedure to create a associative Array Loop. I need considerations and "theory" about this PLSQL resources. Thanks.
DECLARE
TYPE spurs_players_type IS TABLE OF VARCHAR2(45)
INDEX BY PLS_INTEGER;
v_spurs_2006 spurs_players_type;
v_spurs_numero PLS_INTEGER;
BEGIN
v_spurs_2006(1) := 'Robinson';
v_spurs_2006(2) := 'Chimbonda';
v_spurs_2006(3) := 'Young';
v_spurs_2006(4) := 'Zokora';
v_spurs_2006(5) := 'Davids';
v_spurs_2006(6) := 'Taino';
v_spurs_2006(7) := 'Stalteri';
v_spurs_2006(8) := 'Jenas';
v_spurs_2006(10) := 'Keane';
v_spurs_2006(20) := 'Dawson';
v_spurs_2006(22) := 'Huddlestone';
v_spurs_2006(25) := 'Lennon';
v_spurs_2006(26) := 'King';
v_spurs_2006(35) := 'Dervite';
v_spurs_numero := v_spurs_2006.LAST;
WHILE v_spurs_numero IS NOT NULL
LOOP
DBMS_OUTPUT.PUT_LINE('Number of player ' ||
v_spurs_2006(v_spurs_numero) || ' is ' ||
v_spurs_numero);
v_spurs_numero := v_spurs_2006.PRIOR (v_spurs_numero);
END LOOP;
END;
.LAST and .PRIOR are collection methods, check the docs below:
Collection Methods
I am new to PL/SQL... In Varray how can i get multiple value from IN parameter..... else Is there another ways to get the values...
I want to interate the values through VArray... if any other options then its fine..
coding:
CREATE OR REPLACE
PROCEDURE dynamic_query_build(
vr_plan_sku_id IN VARCHAR2 )
IS
type plan_sku_id_array IS VARRAY(999) OF VARCHAR2(5000);
plan_sku_id plan_sku_id_array;
total INTEGER;
vrx_plan_sku_id VARCHAR2(3000);
BEGIN
vrx_plan_sku_id:= REPLACE(vr_plan_sku_id,',',chr(39)||','||chr(39));
plan_sku_id := plan_sku_id_array(chr(39)||vrx_plan_sku_id||chr(39));
total := plan_sku_id.count;
FOR i IN 1 .. total
LOOP
dbms_output.put_line(plan_sku_id(i));
END LOOP;
EXCEPTION
WHEN OTHERS THEN
raise_application_error(-20001,'An error was encountered - '||SQLCODE||' -ERROR- '||SQLERRM);
END dynamic_query_build;
Execution:
set serveroutput on;
declare
vr_plan_sku_id varchar2(200) := '5863314,5863315';
BEGIN
dynamic_query_build(vr_plan_sku_id);
END;
/
My Output:
anonymous block completed
'5863314','5863315'
Expected output:
5863314
5863315
now it is considering as single value....
I created anonymous block with procedure dynamic_query_build. Added there code, that will split VARCHAR2 variable into varray.
I think, the key to your question is this line - plan_sku_id.EXTEND();
You can extend varray dynamically, but only till it reaches defined maximum (in your case - 999).
DECLARE
vr_plan_sku_id varchar2(200) := '5863314,5863315';
PROCEDURE dynamic_query_build(
vr_plan_sku_id IN VARCHAR2 )
IS
type plan_sku_id_array IS VARRAY(999) OF VARCHAR2(5000);
plan_sku_id plan_sku_id_array;
total INTEGER;
position PLS_INTEGER := 0;
last_position PLS_INTEGER := 1;
tmp VARCHAR2(5000);
counter PLS_INTEGER := 1;
BEGIN
plan_sku_id := plan_sku_id_array();
LOOP
position := INSTR(vr_plan_sku_id, ',', last_position);
IF position > 0 THEN
tmp := SUBSTR(vr_plan_sku_id, last_position, position - last_position);
last_position := position + 1;
ELSE
tmp := SUBSTR(vr_plan_sku_id, last_position);
END IF;
plan_sku_id.EXTEND();
plan_sku_id(counter) := tmp;
counter := counter + 1;
EXIT WHEN position = 0 OR counter > 10;
END LOOP;
total := plan_sku_id.count;
FOR i IN 1 .. total
LOOP
dbms_output.put_line(plan_sku_id(i));
END LOOP;
EXCEPTION
WHEN OTHERS THEN
raise_application_error(-20001,'An error was encountered - '||SQLCODE||' -ERROR- '||SQLERRM);
END dynamic_query_build;
BEGIN
dynamic_query_build(vr_plan_sku_id);
END;
/
Put a replace in the dbms_output statement this will eliminate the quotes from the string
....
dbms_output.put_line replace (replace (plan_sku_id(i), '''' ))',',chr(10);
.....