Why no output when PLSQL Anonymous block completes?

Question

I'm just getting into PL/SQL, and I tried to run the following code, and I am getting anonymous block completed, but I think I should be getting Testing output. Does any know what I am doing wrong?

DECLARE
   message varchar2(20) := 'Testing output';
BEGIN
   dbms_output.put_line(message);
END;
/

The answer depends on what client you're using. `SET SERVEROUTPUT ON` is correct for SQL*Plus. Other tools have their own means for retrieving the results from `dbms_output`. — Jeffrey Kemp, Feb 12 '13 at 02:46

score 55 · Accepted Answer · edited Dec 11 '14 at 08:28

55

Viewing the DBMS_OUTPUT depends on the program.

SQL*Plus and Oracle SQL Developer

Run SET SERVEROUTPUT ON; first. This is all that's necessary in SQL*Plus or recent versions of Oracle SQL Developer.

SET SERVEROUTPUT ON;
begin
    dbms_output.put_line('Testing output');
end;
/

PL/SQL Developer

Output is automatically detected and displayed in the "Output" tab.

edited Dec 11 '14 at 08:28

Jon Heller

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answered Feb 10 '13 at 22:14

Lews Therin

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1

thanks for the quick reply. I set serveroutput to on and it worked. Is there a way that i can run it in sqldeveloper though? – user1817081 Feb 10 '13 at 22:24
That's cool. Are you running from CLI? And yes, when I was using Oracle during my module I used sql developer through out. – Lews Therin Feb 10 '13 at 22:25
2

In SQL Developer select "View" -> "DBMS Output". – Brian Feb 10 '13 at 23:59
1

Dbms Output is opened, it is connected to correct connection, but nothing is displayed – renathy Feb 07 '18 at 12:50
I'm trying it online with Oracle SQL worksheet and it's giving `Unsupported Command` error. Any idea how I could work it out? – Vaishnavi Killekar Mar 19 '19 at 13:35

score 8 · Answer 2 · edited Sep 22 '13 at 16:39

8

Yes, in Oracle SQL Developer put the statement:

SET SERVEROUTPUT ON;

just before your DECLARE keyword and this should work.

I couldn't find View -> DBMS Output and I'm using version 1.5.5.

edited Sep 22 '13 at 16:39

Giuseppe Garassino

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answered Sep 22 '13 at 16:09

Alvin Bunk

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score 5 · Answer 3 · answered Sep 12 '13 at 06:43

5

Yes. There is way to see output in SQL Developer.

Click ->View->Dbms Output and then click + symbol on Dbms output window. now you can run the procedure and can see output.

answered Sep 12 '13 at 06:43

MADHAIYAN M

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score 1 · Answer 4 · answered Aug 09 '17 at 17:12

`The following statement will give the possible solution try this out

SET SERVEROUTPUT ON;

Then Run this code will get the following output

declare
a integer :=10;
b integer :=20;
c integer;
f real;
begin
c := a+b;
dbms_output.put_line('value of c: ' || c);
f := 70.0/3.0;
dbms_output.put_line('value of f: ' || f);

end; /

The code will give the following output

value of c: 30 value of f: 23.3333333333333333333333333333333333333

PL/SQL procedure successfully completed.

score 0 · Answer 5 · edited Feb 26 '18 at 15:42

0

Yes, this is correct. You need to use before this block:

SET SERVEROUTPUT ON

Then, message get displayed on window.

Else we can check in SQL Developer select "View" -> "DBMS Output".
and in PLSQL developer under the OutPut tab we can check message.

edited Feb 26 '18 at 15:42

Eray Balkanli

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answered Feb 11 '13 at 06:08

user2001117

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Where do you put the set block? In the declaration? – user1817081 Feb 11 '13 at 14:14
Before the `Declare` works for me – glh Feb 12 '13 at 11:31

score -2 · Answer 6 · edited Feb 26 '18 at 15:42

-2

**SET SERVEROUTPUT ON;**
DECLARE
   a INTEGER :=10;
   b INTEGER :=20;
   c float ;
   d real ;

BEGIN
   c :=a+b;
   dbms_output.put_line('the value of C is :'|| c);
   d := 70.0/3.3;
   dbms_output.put_line('the value of d is:'|| d);
END;

This will give you the output

the value of C is: 30
the value of d is: 21.21212121212121212121212121212121212121

edited Feb 26 '18 at 15:42

Eray Balkanli

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answered Dec 11 '14 at 05:21

Sunil Kumar Sahu

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score -2 · Answer 7 · answered Aug 22 '16 at 06:26

-2

If you are getting "anonymous block completed" while executing the procedure by typing "EXECUTE ;" then run the below command & again execute the procedure. command is

SET SERVEROUTPUT ON;

answered Aug 22 '16 at 06:26

Bablu Gope

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This simply repeats the existing answers. As such what additional value do you think it has? – Robert Longson Aug 22 '16 at 06:46

Why no output when PLSQL Anonymous block completes?

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