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sqloracle-databaseplsqlbuffer-overflowpascals-triangle

Error While generating pascal's triangle in plSQL


well I'm pretty new to plSQL and I can't seem to figure out some errors I'm getting while trying to generate a pascal's triangle

Here's the code:

SET SERVEROUTPUT ON;
DECLARE
    N NUMBER;
    I NUMBER;
    J NUMBER;
    K NUMBER;
    L NUMBER;
    T NUMBER;
    S NUMBER;
BEGIN
    DBMS_OUTPUT.PUT_LINE('ENTER THE LIMIT');
    N:=&N; 
    I:=0;
    T:=N-2;
    S:=0;
    L:=0;
    WHILE (I<N) LOOP
        J:=0;
        WHILE (J<T) LOOP
            DBMS_OUTPUT.PUT(' ');
            J:=J+1;
        END LOOP;
        K:=0;
        WHILE (K<=S) LOOP
            IF (K<=I) THEN
                DBMS_OUTPUT.PUT(K+1);
                L:=K;
            ELSE
                L:=L-1;
                DBMS_OUTPUT.PUT(L+1);
            END IF;
            K:=K+1;
        END LOOP;
        DBMS_OUTPUT.PUT_LINE('');
        T:=T-1;
        S:=S+2;
    END LOOP;
END;

The errors are

Error report - 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 line 29 20000. 00000 - "%s" *Cause: The stored procedure 'raise_application_error' was called which causes this error to be generated. *Action: Correct the problem as described in the error message or contact the application administrator or DBA for more information.


Solution

  • Neither I nor N are ever updated, so you have an infinite loop. Other than that, the error is indicating that the DBMS_OUTPUT buffer is being exceeded. It's default buffer size is 1,000,000 bytes, though you can adjust that with an appropriate DBMS_OUTPUT.ENABLE call or SET SERVEROUTPUT SIZE statement.