I'm trying to display the clob column on Page Item. but, it shows the below error message:
I've done the following:
Created page item with display only.
Add plsql returned function into the page item with the below code:
DECLARE
L_CLOB CLOB;
begin
select p_data INTO l_clob from testdel;
:P2_NEW := L_CLOB;
END;
But, it shows as error message.
I would like to return more than 4000 characters. But, no success.
Error computing item source value for page item P2_NEW.
ORA-06502: PL/SQL: numeric or value error
I think you are doing something wrong, please try using below instructions.
Data length stored in table : >4000
first Create item as display only
Item Source
Item Output
Please let me know if any issue there .
Thanks.
Related
I'm trying to generate an Interactive-Report in Apex with a SQL-Statement which lies in a page item (:P10_SQL), for example: select 1 from dual.
declare
l_sql VARCHAR2(4000 CHAR);
Begin
select V('P10_SQL') into l_sql from dual;
return l_sql;
End;
The Report has the type PL/SQL Function Body returning SQL Query.
Apex shows an error
ORA-20999: WWV_FLOW_EXEC.NULL_QUERY_RETURNED_BY_FUNCTION
Somebody gets an idea?
Apex acts kind of crazy as it doesn't always want to accept code I write (which is perfectly valid), saying that function doesn't return anything. Oh well.
Therefore, my function that returns SQL query was written in stages. The following bullets represents attempts I made; all of them are OK. The final version - the one that runs right now is as simple as return :P77_SQL; (I'm on page 77)
return 'select dummy from dual'
declare
l_str varchar2(4000);
begin
l_str := case when :P77_SQL is null then 'select dummy from dual'
else :P77_SQL
end;
return l_str;
end;
return :P77_SQL;
However: you can't use interactive report, has to be a classic report because not all tables you'll have as a source will have the same column names (unless you use aliases and match number and datatypes, which is rather complicated).
But, if you use a classic report, then turn "Use generic column names" on and set desired number of generic columns (I set it to 10; you'll know what to do in your case).
My P77_SQL text item submits the page when I press ENTER, which causes the report to refresh.
A few examples:
I have made a data block in oracle forms using Data Block Wizzard, however query does not populate the form. Even though cursor returns values and enters the loop in query procedure:
Here is the code of query procedure:
PROCEDURE PD_PDT_SCHEDULE_TYPES_QUERY(par_pd_pdt_schedule_types_tbl IN OUT gt_pd_pdt_schedule_types_tbl) IS
lc_err_msg VARCHAR2(2000);
lc_add_rec VARCHAR2(1);
lc_search_ok VARCHAR2(1);
CURSOR c_pd_pdt_schedule_types IS
SELECT pst_code,
pst_prty,
pst_mnemo,
pst_name,
pst_crt_mandatory,
pst_pdt_mnemo,
pst_type,
pst_purpose,
pst_purpose_det,
pst_ref_mnemo,
pst_hidden,
pst_ref_show,
pst_payment_show
FROM s_pd_pdt_schedule_types where pst_pdt_mnemo = 'SOME_PRODUCT';
ln_idx NUMBER := 1;
BEGIN
FOR i IN c_pd_pdt_schedule_types
LOOP
par_pd_pdt_schedule_types_tbl(ln_idx) := i;
ln_idx := ln_idx + 1;
END LOOP;
EXCEPTION
WHEN OTHERS THEN
lc_err_msg := 'FRL_184.PD_PDT_SCHEDULE_TYPES_QUERY error: ' || SQLERRM;
RAISE_APPLICATION_ERROR(-20555, SUBSTR(lc_err_msg, 1, 2000));
END PD_PDT_SCHEDULE_TYPES_QUERY;
Here is the code of form trigger Query-Procedure:
DECLARE
bk_data FRL_184.GT_PD_PDT_SCHEDULE_TYPES_TBL;
BEGIN
frl_184.PD_PDT_SCHEDULE_TYPES_QUERY(bk_data);
PLSQL_TABLE.POPULATE_BLOCK(bk_data, 'S_PD_PDT_SCHEDULE_TYPES');
END;
First of all, make sure that PD_PDT_SCHEDULE_TYPES_QUERY actually does something - test it in SQL*Plus (or SQL Developer or any other tool you use).
QUERY-PROCEDURE trigger is created by the Wizard; it is as is, there's nothing you should do about it. Forms says that you shouldn't modify it anyway.
In order to make it work, you should edit data block's properties - go to the Palette, navigate to the "Database" section and open Query data source columns - in there, you should enter ALL columns returned by the procedure, i.e. pst_code, pst_prty, etc., along with their datatypes, length, precision ... depending on the datatype itself.
Also, modify Query data source arguments property. As your procedure doesn't accept any IN parameters, it would be just one argument (TABLE type, write its name, mode is IN OUT). If you passed some parameters to the procedure, you'd put them in here as well.
That would be it, I think.
I have a classic report with the following example query:
select apex_item.text(1,book.title,30,30,' readonly="readonly" ','P4083_BOOKTITLE') as "booktitle"
from book;
I would like to retrieve the value of this page item in a plsql proces:
declare
pl_booktitle varchar2(255);
begin
pl_booktitle := v('P4083_BOOKTITLE');
apex_debug.message('Book Title:'|| pl_booktitle);
end;
However when debugging it only shows: 'Book Title:' ... and not the value of the page item.
In Session -> Page Items, I cannot find P4083_BOOKTITLE.
Should I set the items before I can retrieve the value? And how do I do this?
Thanks!
try this
enter code here
declare
pl_booktitle varchar2(255);
begin
pl_booktitle :=:P4083_BOOKTITLE
apex_debug.message('Book Title:'|| pl_booktitle);
end;
I have a problem setting the value of an apex item (P13_3) using a pl/sql defined dynamic action. At the moment the dynamic action is triggered using a button. For example if "530000000019" is entered into the item (P13_3), after the clicking the button it should return a value (Product Code) and set the item with that value.
This is the pl/sql code that runs when the button is clicked:
DECLARE
p_code products.prod_code%TYPE;
p_id products.prod_id%TYPE;
BEGIN
p_id := :P13_2;
SELECT prod_code INTO p_code FROM products WHERE prod_id = p_id;
RETURN p_code;
END;
This is the error that appears:
Ajax call returned server error ORA-01403: no data found for Set Value.
This means that no data was returned when the SELECT INTO clause ran. I then altered the code and ran this code to see if there were any faults in the code:
DECLARE
p_code products.prod_code%TYPE;
p_id products.prod_id%TYPE;
BEGIN
p_id := 530000000019;
SELECT prod_code INTO p_code FROM products WHERE prod_id = p_id;
RETURN p_code;
END;
This code returned a value and the set value dynamic action was successful. This therefore means, that in apex was not picking up the value in the P13_3 item.
I have a apex process that has similar syntax that calls the P13_3 apex item and it runs successfully. Here is the code of the apex process:
DECLARE
b_code products.prod_id%TYPE := :P13_3;
p_quant products.prod_qnty%TYPE := :P13_2;
BEGIN
UPDATE products
SET prod_qnty = prod_qnty - p_quant
WHERE prod_id = b_code;
END;
If I am not mistaken, I would say that this proves that the problem lies with dynamic action and not the pl/sql code. I am currently using apex 5.1 (The 16 Dec release). Please Help. Thank you in advance :)
I have tried similar work ,I have created two text boxes one for input & another for output & I am getting expected result .Please check following screen shots of result & dynamic action settings
And dynamic action settings is as follows :
Edit view of True action is as follows :
Hope this will help you.
I got a problem with oracle database ,i created a stored procedure and i wanted to pass an array of items' ids to this procedure to select the data according to array of items using "in" clause,the available solution to this as i found was to create a function and pass a string value with all item's ids seperated by a comma ,and this function will return a datatble with a row for each item id.this approach works fine when i try it in toad in a select statement,,but when i use it in the stored procedure i get a strange error
"ORA-12714: invalid national character set specified"
after searching about the reason of that error i found that it is a bug in that version of oracle according to this page and it was fixed in a 10.2.0.4 oracle patch and the exact reason is to declare a cursor for the function that returns a data table
As it is impossible to me to let the users who work on a live production environment to stop the servers to apply the update patch ,I was wondering if any Oracle expert can help me to declare a cursor and return that cursor instead of returning the table.
my Oracle function,Thanks in Advance
create or replace
FUNCTION SplitIDs(
v_List IN VARCHAR2)
RETURN RtnValue_Set PIPELINED
AS
SWV_List VARCHAR2(2000);
v_RtnValue Dt_RtnValue := Dt_RtnValue(NULL);
BEGIN
SWV_List := v_List;
WHILE (instr(SWV_List,',') > 0)
LOOP
FOR RetRow IN
(SELECT ltrim(rtrim(SUBSTR(SWV_List,1,instr(SWV_List,',') -1))) SelectedValue
FROM dual
)
LOOP
v_RtnValue.SelectedValue := RetRow.SelectedValue;
PIPE ROW(v_RtnValue);
END LOOP;
SWV_List := SUBSTR(SWV_List,instr(SWV_List,',')+LENGTH(','),LENGTH(SWV_List));
END LOOP;
FOR RetRow IN
(SELECT ltrim(rtrim(SWV_List)) SelectedValue FROM dual
)
LOOP
v_RtnValue.SelectedValue := RetRow.SelectedValue;
PIPE ROW(v_RtnValue);
END LOOP;
RETURN;
END;
Oracle says this about the error:
Error: ORA-12714 (ORA-12714)
Text: invalid national character set specified
Cause: Only UTF8 and AL16UTF16 are allowed to be used as the national character set
Action: Ensure that the specified national character set is valid
Check your NLS_NCHAR_CHARACTERSET which is set using:
select value from NLS_DATABASE_PARAMETERS where parameter = 'NLS_NCHAR_CHARACTERSET';
Try using NCHAR, NVARCHAR2 or NCLOB