Oracle declaration takes time

Question

oracle declaration takes more time.
In order to bypasss the declarations(100 declarations) it takes nearly 1 sec
why it is taking 1 sec ?

Answer 1

Sample
select Current_timestamp from dual;
declare
P_1                      NUMBER(25);
P_2                           NUMBER(25);         
P_3   NUMBER(20);
l_4     NUMBER(20);
l_5             INT;
l_6            INT;
l_7       VARCHAR2(50);
l_8         VARCHAR2(50);
l_9      VARCHAR2(25);
l_10               VARCHAR(32000);
l_11             CLOB;
l_12        NUMBER(5);
l_13    NUMBER(5);
l_14           VARCHAR(2000);
l_15           INT;
l_16              INT;
l_17        NUMBER(1) :=1;
l_18  NUMBER(10):=1;
l_19      NUMBER(20);
l_20       VARCHAR2 (32000);
l_21        INTEGER;
l_22            INTEGER;
l_23            float;
l_24           DOUBLE PRECISION;
l_25             NUMBER(20);
l_26              integer;
l_27           number(10);
l_28          varchar(100);
l_29    CLOB;
l_30  VARCHAR2(32000);
l_31  VARCHAR2(32000);
l_32         VARCHAR2(32000);
l_33 VARCHAR2(2000);
l_34  VARCHAR2(2000);
l_35 VARCHAR2(2000);
l_36 VARCHAR2(50);
l_37      int;
l_38 VARCHAR2(50);
begin
DBMS_output.put_line(Current_timestamp);       
end;
CURRENT_TIMESTAMP
20-NOV-13 12.50.09.491000000 PM
1 rows selected
anonymous block completed
20-NOV-13 12.50.10.334000000 PM