Scope of the exception block
I have a meanful exception, under where the exception may occure I have a excptionhandling block. I dont know if i can use the variabled in the block where the exception occured.
thx in advance
Andre
thx i dont know if i can also do a select command from the exception block:
the followig code couldnt be compiled:
EXCEPTION
WHEN NO_DATA_FOUND THEN
BEGIN
SELECT ***** INTO *** FROM ***** WHERE ***=SELECT MIN(***) FROM **** WHERE ***** > **** AND *** like **** AND **** like *** and
END,
the error message was: found select where.. expected
thx
Andre
Similar Messages
-
How to handle the plsql error occuring in the exception block
We know how to handle exceptins which occur in BEGIN block.
But am unable to catch the exception in the exception block. Am writing an erroeneous code so that the control will go to exception block and there is also one plsql error, but am unable to handle that error, it's returning the error to the calling environment.
DECLARE
cnt NUMBER(5):=0;
BEGIN
select 'debalina' INTO cnt from dual;
DBMS_OUTPUT.PUT_LINE(to_char(cnt));
EXCEPTION
WHEN invalid_number THEN
DBMS_OUTPUT.PUT_LINE('error has occured inside begin block');
cnt:='deba';
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE('error has occured inside begin block');
END;
please suggest me how to catch this exception?Hi,
DECLARE
cnt NUMBER(5):=0;
BEGIN
select 'debalina' INTO cnt from dual;
DBMS_OUTPUT.PUT_LINE(to_char(cnt));
EXCEPTION
WHEN invalid_number THEN
DBMS_OUTPUT.PUT_LINE('error has occured inside begin block');
cnt:='deba';
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE('error has occured inside begin block');
END;
First of all your namee exception which you have posted i.e invalid_number itself is wrong.
You need to use named exception VALUE_ERROR for catching the exception in the main block.
SQL> DECLARE
2 cnt NUMBER(5):=0;
3 BEGIN
4 select 'debalina' INTO cnt from dual;
5 DBMS_OUTPUT.PUT_LINE(to_char(cnt));
6 EXCEPTION
7 WHEN Invalid_number THEN
8 DBMS_OUTPUT.PUT_LINE('error has occured inside main block');
9 end;
10 /
DECLARE
ERROR at line 1:
ORA-06502: PL/SQL: numeric or value error: character to number conversion error
ORA-06512: at line 4
SQL> DECLARE
2 cnt NUMBER(5):=0;
3 BEGIN
4 select 'debalina' INTO cnt from dual;
5 DBMS_OUTPUT.PUT_LINE(to_char(cnt));
6 EXCEPTION
7 WHEN VALUE_ERROR THEN
8 DBMS_OUTPUT.PUT_LINE('error has occured inside main block');
9 end;
10 /
error has occured inside main block
PL/SQL procedure successfully completed.Your doubt regarding catching the exception in exception block, you can execute as below, by nesting a Begin block inside the exception block itself.
SQL> DECLARE
2 cnt NUMBER(35):=0;
3 BEGIN
4 select 'debalina' INTO cnt from dual;
5 DBMS_OUTPUT.PUT_LINE(to_char(cnt));
6 EXCEPTION
7 WHEN Value_error THEN
8 DBMS_OUTPUT.PUT_LINE('error has occured inside main block');
9 Begin
10 cnt:='deba';
11 Exception
12 WHEN OTHERS THEN
13 DBMS_OUTPUT.PUT_LINE('error has occured inside exception block');
14 End;
15 END;
16 /
error has occured inside main block
error has occured inside exception block
PL/SQL procedure successfully completed.Hope your doubt is clear.
Twinkle -
Capturing error in Exceptions Block in a PLSQL Procedure
Hi,
I am creating a procedure where i need to update a table with some constraints.
i need to update atleast a million records with data from another table.
but here is the catch while updating million records, there may be some records which wont be vaild because of the constraints and cannot be updated and hence will give an error.
but in my procedure i want to write an exception block where it captures the error, ignores the error and keep coninuing the procedure and update all the remaining records instaed of getting hanged at the point of erorr.
How can i do this.
I know i can disable the constraints in the table.
but i want the constraints enabled, so that the errors are trapped and skipped and only the records that are valid are updated.
Can seomone help me write this exception block which does this function.
Thanks,
Philip.Hi,
I used the exception bloack as u said.
i have a sample of 20 records and i know the 11th record is not valid and should be inserted in a different way from the rest 19 records.
so i ran the same query with the exceptions block.
but what happened, until 10th record everything was fine.
on the 11th record the execution went into the exceptions block and executed whatever was there in the exception block, but then the script just exited after exception block, it did not go back to fetch the remaining records from 12th unitl 20th.
How can i fix this.
Philip. -
DBMS_OUTPUT in exception block
Hi:
I have a user defined exception and I am trying to use DBMS_OUTPUT.PUT_LINE in the exception block. Even though I run the code in sqlplus with serverputput on, the dbms_output is not displayed. Why?
Here is an example:
DECLARE
salary_too_high EXCEPTION;
current_salary NUMBER := 20000;
max_salary NUMBER := 10000;
erroneous_salary NUMBER;
BEGIN
BEGIN ---------- sub-block begins
IF current_salary > max_salary THEN
RAISE salary_too_high; -- raise the exception
END IF;
EXCEPTION
WHEN salary_too_high THEN
-- first step in handling the error
DBMS_OUTPUT.PUT_LINE('Salary ' || erroneous_salary || ' is out of range.');
DBMS_OUTPUT.PUT_LINE('Maximum salary is ' || max_salary || '.');
END;
Please help.
Thanks.
BruceIs this the complete code you have, or this is just part of the whole code?
I tried to run it, and it's perfectly OK.
SQL> set serverout on size 100000
SQL> DECLARE
2 salary_too_high EXCEPTION;
3 current_salary NUMBER := 20000;
4 max_salary NUMBER := 10000;
5 erroneous_salary NUMBER;
5 BEGIN
6 begin
7
8 if current_salary > max_salary then
9 RAISE salary_too_high; -- raise the exception
10 END IF;
11 EXCEPTION
12 WHEN salary_too_high THEN
13 -- first step in handling the error
14 DBMS_OUTPUT.PUT_LINE('Salary ' || erroneous_salary || ' is out of range.');
15 dbms_output.put_line('Maximum salary is ' || max_salary || '.');
16 end;
17 end;
18 /
Salary is out of range.
Maximum salary is 10000.
PL/SQL procedure successfully completed. -
DBMS_XMLGEN --Number of active cursors in increased in Exception block
Hi ,
We have a custom code that use DBMS_XMLGEN,the issue is when any exception happens the Number os active cusrors increse and when it happens in a lopp we hit 1000ORA-01000: maximum open cursors exceeded.
Although I close the context in the exception Block.
Below is sample code where I could replicate this:
Step1.Create a table
CREATE TABLE EMP(EMP_NO NUMBER,EMPNAME VARCHAR2(100));
Step2:
Create a Procedure:
CREATE OR REPLACE PROCEDURE TEST_XMLGEN
AS
l_clob CLOB;
l_ctx dbms_xmlgen.ctxhandle;
p_sql VARCHAR2(4000):='SELECT EMP_NO,,EMPNAME FROM EMP';--syntax error on purpose ,so that exception happens
l_cursor_count NUMBER;
BEGIN
SELECT VALUE
INTO l_cursor_count
FROM v$mystat a, v$statname b
WHERE a.statistic# = b.statistic#
AND b.name = 'opened cursors current';
DBMS_OUTPUT.PUT_LINE ('open cursors place00' || l_cursor_count);
l_ctx := dbms_xmlgen.newcontext (p_sql);
SELECT VALUE
INTO l_cursor_count
FROM v$mystat a, v$statname b
WHERE a.statistic# = b.statistic#
AND b.name = 'opened cursors current';
DBMS_OUTPUT.PUT_LINE('open cursors place01' || l_cursor_count);
dbms_xmlgen.getxml (l_ctx,l_clob);
SELECT VALUE
INTO l_cursor_count
FROM v$mystat a, v$statname b
WHERE a.statistic# = b.statistic#
AND b.name = 'opened cursors current';
DBMS_OUTPUT.PUT_LINE ('open cursors place02' || l_cursor_count);
DBMS_OUTPUT.PUT_LINE('l_clob:'||l_clob);
dbms_xmlgen.closecontext (l_ctx);
SELECT VALUE
INTO l_cursor_count
FROM v$mystat a, v$statname b
WHERE a.statistic# = b.statistic#
AND b.name = 'opened cursors current';
DBMS_OUTPUT.PUT_LINE ('open cursors place03' || l_cursor_count);
EXCEPTION
WHEN OTHERS
THEN
SELECT VALUE
INTO l_cursor_count
FROM v$mystat a, v$statname b
WHERE a.statistic# = b.statistic#
AND b.name = 'opened cursors current';
DBMS_OUTPUT.PUT_LINE ('open cursors place04' || l_cursor_count);
dbms_xmlgen.closecontext (l_ctx);
SELECT VALUE
INTO l_cursor_count
FROM v$mystat a, v$statname b
WHERE a.statistic# = b.statistic#
AND b.name = 'opened cursors current';
DBMS_OUTPUT.PUT_LINE ('open cursors place05' || l_cursor_count);
END;
Step3: Execute above Procedure
If you look at the number of active cursor it is increased in exception block,I suspect this is what is causing issue with my program too.Any suggestions to solve this issue.
Thanks
ShefaliDid you mean this test:
declare
ts timestamp;
type tp_strings is table of varchar2(32767) index by pls_integer;
t_strings tp_strings;
t_tmp xmltype;
t_nd dbms_xmldom.domnode;
t_nl dbms_xmldom.domnodelist;
t_clob clob;
begin
t_clob := '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'
|| '<sst xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" count="5000" uniqueCount="5000">';
for i in 1 .. 5000
loop
t_clob := t_clob || to_clob( '<si><t>A' || to_char( i ) || '</t></si>' );
end loop;
t_clob := t_clob || '</sst>';
t_tmp := xmltype( t_clob );
t_strings.delete;
ts := systimestamp;
select str
bulk collect into t_strings
from xmltable( xmlnamespaces( default 'http://schemas.openxmlformats.org/spreadsheetml/2006/main' )
, '/sst/si' passing t_tmp
columns str clob path 't'
dbms_output.put_line( systimestamp - ts );
dbms_output.put_line( t_strings.count() || ' ' || t_strings( t_strings.first ) || ' ' || t_strings( t_strings.last ) );
t_strings.delete;
ts := systimestamp;
select /*+ NO_XML_QUERY_REWRITE */ str
bulk collect into t_strings
from xmltable( xmlnamespaces( default 'http://schemas.openxmlformats.org/spreadsheetml/2006/main' )
, '/sst/si' passing t_tmp
columns str clob path 't'
dbms_output.put_line( systimestamp - ts );
dbms_output.put_line( t_strings.count() || ' ' || t_strings( t_strings.first ) || ' ' || t_strings( t_strings.last ) );
t_strings.delete;
ts := systimestamp;
t_nd := dbms_xmldom.makenode( dbms_xmldom.getdocumentelement( dbms_xmldom.newdomdocument( t_tmp ) ) );
t_nl := dbms_xslprocessor.selectnodes( t_nd, '/sst/si/t/text()', 'xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main"' );
for i in 0 .. dbms_xmldom.getlength( t_nl ) - 1
loop
t_strings( i ) := dbms_xmldom.getnodevalue( dbms_xmldom.item( t_nl, i ) );
end loop;
dbms_output.put_line( systimestamp - ts );
dbms_output.put_line( t_strings.count() || ' ' || t_strings( t_strings.first ) || ' ' || t_strings( t_strings.last ) );
end; -
Isn't this Exception block redundant?
DB Version: 10.2.0.4
Found this on procedure code.
begin
select nvl(user_id,'NONE')into v_userid from user_info where user_id = p_userid;
exception
when no_data_found then
RAISE_APPLICATION_ERROR (-20002, 'No Such User');
end;NO_DATA_FOUND occurs when SELECT query retuns NULL, not when the SELECT returns
no rows selectedSince NVL is handling NULLs in the SELECT query, the above exception block is never going to be used. Right?user872043 wrote:
DB Version: 10.2.0.4
Found this on procedure code.
begin
select nvl(user_id,'NONE')into v_userid from user_info where user_id = p_userid;
exception
when no_data_found then
RAISE_APPLICATION_ERROR (-20002, 'No Such User');
end;NO_DATA_FOUND occurs when SELECT query retuns NULL, not when the SELECT returns
no rows selected
No, it's just the opposite. NO_DATA_FOUND is raised when no rows are returned. It doesn't matter what's in that row: all NULLs is okay.
Since NVL is handling NULLs in the SELECT query, the above exception block is never going to be used. Right?That's easy for you to test. Pass a value of p_userid that you know does not exist.
The EXCEPTION block is redundant in the sense that Oracle will raise an error anyway. It would be NO_DATA_FOUND, not 'No Such User', but the line number in the error message would point to the SELECT statement, not the RAISE_APPLICATION_ERROR statement. -
I am just wondering if it's except-able to put and insert in the exception block? What I would like is if date2 is null kick off an error. if there are no records where date2 is null then go ahead and insert the new record. Is this common practice or should I use sql%rowcount or put count in to variable and check if greater then 0?
create or replace
PROCEDURE X_INSERT
(P_ID NUMBER,
P_DATE1 DATE,
P_DATE2 DATE
AS
a NUMBER;
BEGIN
select ID into a from X where ID = P_ID
AND DATE_2 IS NULL ;
if sql%found then
raise_application_error(-20000, 'record exists');
END IF;
exception
when no_data_found then
insert into X values (P_ID,P_DATE1, P_DATE2);
END X_INSERT;>
I am just wondering if it's except-able to put and insert in the exception block?
>
No - I do not think that approach is acceptable and would not recommend it.
You need any exception LOGGING (inserts) to be permanent even if the transaction is rolled back.
One way to accomplish this is to write a LOG procedure (e.g. SP_LOG) that uses PRAGMA AUTONOMOUS_TRANSACTION so that the logging will occur even if the original transaction is rolled back. You can have overloaded versions of SP_LOG that take different sets of parameters.
The code in the exception block would call the LOG procedure to do the logging and would pass it any information relevant to the exception and where it was caused. A sample generic EXCEPTION block might be
EXCEPTION
WHEN OTHERS THEN
/* Build error string to help debug problem */
v_error_text := ('Exception :'
|| SQLERRM
|| ' Parse error :'
|| TO_CHAR (SQLCODE)
|| ' at position '
|| TO_CHAR (DBMS_SQL.LAST_ERROR_POSITION)
|| ' SQL Text used :'
/* Log this error in a table - for researching problems. */
SP_LOG ( v_error_text );
END main_sp;There would normally be other parameters to the log procedure to identify the stored procedure and package name where the exception was raised, the exception error stack and so on.
The exception block might also need to re-raise the exception rather than make it disappear so that the caller is aware of the exception that occured.
In your case there is no real exception. You just want to log information.
So instead of raising an exception you would just modify your code to call the logging procedure.
if sql%found then
SP_LOG('Cannot INSERT record into myTable - record exists');
END IF; -
Why the exception is being caught - Suggestion is required.
hi,
Acording to the knowledge i have both theoretical and practial
when a method declares that it throws an ExceptionType then that method never handles that exception at all even though there exists a catch(Exception e) block in the try block.
The above scenario and ethics is violated when i run the following program.
I want to knw why the Exception block is catching the IllegalArgumentException ?
public class TestClass {
private void testMethod() throws IllegalArgumentException {
try {
int i = 0;
throw new IllegalArgumentException("IA");
} catch (Exception e) {
System.out.println("Test message 2");
e.printStackTrace();
public static void main(String[] args) {
try {
new TestClass().testMethod();
} catch (IllegalArgumentException iae) {
System.out.println("Exception caught in main method");
When I run the above program the exception being thrown is caught in the testMethod only and the message Test message 2" is being printed
Why is it happening ?
Thanx in advance
MaheshHi,
What ever u said is not real. When a method declares that it throws an exception it will never be caught by the generic Exception method.
This what is happened.
Generally in my programming i throw a BusinnesException when input data violates some business exception. ( I declare that my method throws BusinessException ).
I also catch Exception as generic to avoid abnormal termination due to other exception causes.
What i knw is that if a method declares that it is throws an exception ti will never handle that even though it has a catch block to catch parent exception class
mahesh -
Even though I have added sites to the Exceptions in the Popup Blocker preferences, I constantly have to press the Allow button to actually go to the next window. The sites are staying in the Exceptions list and I can get there, but something clearly isn't working properly.
I have been adding each domain name that pops up that's different from the original website and Firefox is still asking me to "Allow" it. Very frustrating...
-
The "add exception" block isn't active
The "add exception" block isn't active in the "I understand the risks." section of Untrusted Connection. I had to use IE to access my wireless router? Any suggestions?
I'm running Firefox 17.0.1 under Win 8.
Keith Brewerhey keith, does the following article help?: [[Certificate contains the same serial number as another certificate]]
-
I go to "tools" then popup blocker "exceptions". (I have the block popups checked.) When I enter "www.paypal.com" and add it in, everything is OK for about 12 hours (or less). I will check to see if the exception is still there within 12 hours and there is nothing in my exceptions. I have added as many as three exceptions entered only to have them all disappear within a few hours.
This severely cramps my attempt to print shipping labels on the PayPal website.
I thought this latest version of Firefox cured the issue, but it did not.Make sure that you do not use [[Clear Recent History]] to clear the "Site Preferences"
Clearing "Site Preferences" in "Clear Recent History" will remove exceptions that are stored in content-prefs.sqlite (site specific settings for zoom) and permissions.sqlite (exceptions for images, cookies, pop-ups, software; Tools > Page Info > Permissions) in the [http://kb.mozillazine.org/Profile_folder_-_Firefox Profile Folder].
The password exceptions (Tools > Options > Security: Passwords: Show Passwords) are also removed from signons.sqlite. -
I was hoping for a hotkey option or button on the toolbar to load images for a single page for a single session at a time. Turning off images really saves bandwidth and speeds load time on websites, but sometimes I'd like to view the images on a page, but only for this session. Is that possible, or do I have to go to the Exceptions page and allow a specific domain or page to load images and then go back and remove that domain or page when I'm done?
*Image Block: https://addons.mozilla.org/firefox/addon/image-block/
-
I have created a vi that uses the LV-GPIB and database connectivity vis. The program runs fine and it ends execution by running the "Close Database Connection.vi".
After closing out my front panel windows and exiting LabVIEW 6.1, I get an error dialog box that reads the message "The exception Privileged instruction (0xc0000096) occured in the application". What does this error mean and how do I resolve it?
Thanks,
TafHi Taf,
Given the broad scope of your application, it may be best to try and isolate the problem down by taking out parts of your application and simplifying it down as much as possible until you can get a consistent version that throws this exception. I would first try to take out either the GPIB or database connectivity portions of the application to narrow down our problem. This error generally occurs when accessing DLLs and external applications, so I wouldn't be surprised if it's the GPIB or database. Let's try to see exactly which one it is and then we can dig deeper into that part of the code. Thanks for your cooperation!
Jeremy L.
National Instruments
Jeremy L.
National Instruments -
How do i add existing web addresses to the popup blocker?
'''different windows/tabs continually open up on different sites especially those from "http://media.fastclick.net". Although it is in a new tab, it is rather annoying. '''
https://support.mozilla.com/en-US/kb/Pop-up+blocker
The popup blocker should block all popups, exceptions for domains that you want to '''allow''' popups for are what you add to the Exceptions window. -
For example on Find-A-Grave when filling in the form to add a memorial there are several blocks that you fill in including location. For some blocks you type in the information and others are pick one of the preset selections. I generally hit the tab key on my keyboard and goes to the next block except when it comes to the preset selection blocks. If I use the tab key to go to the next selection it skips right past the next selection to the selection below that. For example, after I fill in the year I hit the tab key and type u for the United States under the country selection. But in order to get the next block to appear I have to hit tab again (but only when using your browser). Your browser then skips past the state selection to the county selection. Then when I pick the state using the cursor it does it again and drops down to the Bio past the county selection.
When I use Internet Explorer I don't have this problem. I merely hit the tab button on my keyboard and it goes to the next selection rather than as your browser does that is skips to the block below.
Is there some reason you have it set up this way because it is quite annoying to have to go back up each time using the mouse cursor rather than continuing to use the keyboard to fill in everything (typing, tab key or using the arrow keys). To say the least it slows the whole process down a lot. No, it is not my computer. I've had the exact same problem using another computer. No, it is not the find-a-grave website. I just used it as an example. Using your browser forces me to stop using the keyboard to fill in a form and use the mouse and then the keyboard and then the mouse and then the keyboard and then the mouse, etc when it shouldn't be necessary when filling out a form on a website.Are you having the problem with just the one site? Others?
Please post some public linkss.
Start '''[https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode Firefox in Safe Mode]''' {web Link} by holding down the '''<Shift><br> ''(Mac Options)'' ''' key, and then starting Firefox. Is the problem still there?
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