get_big_table（创建大数据量测试表）

a.

DECLARE
  A     NUMBER;
  B     NUMBER;
  C     NUMBER;
  TIME1 NUMBER;
  TIME2 NUMBER;
BEGIN
  A     := 10000;
  B     :=
0;
  TIME1 :=DBMS_UTILITY.GET_TIME;
  WHILE B
+ 1 < A
LOOP
    INSERT
INTO T
      SELECT
ROWNUM+B,T.*
FROM ALL_OBJECTS T WHERE
ROWNUM <= A
- B;
    C :=
SQL%ROWCOUNT;
    B := B
+ C;
    COMMIT;
  END LOOP;
  TIME2 :=DBMS_UTILITY.GET_TIME;
  DBMS_OUTPUT.PUT_LINE(TIME2
- TIME1);
END;

b.

CREATE OR
REPLACE PROCEDURE BIG_TABLE(A
IN NUMBER, TIM
OUT NUMBER)
IS
/*
CREATE TABLE T AS SELECT ROWNUM ID,A.* FROM ALL_OBJECTS AWHERE 1=2;
*/
  B     NUMBER;
  C     NUMBER;
  TIME1 NUMBER;
  TIME2 NUMBER;
BEGIN
  B     :=
0;
  TIME1 :=DBMS_UTILITY.GET_TIME;
  WHILE B
+ 1 < A
LOOP
    INSERT
INTO T
      SELECT ROWNUM
+ B, T.*
FROM ALL_OBJECTS T WHERE ROWNUM
<= A - B;
    C :=
SQL%ROWCOUNT;
    B := B
+ C;
    COMMIT;
  END LOOP;
  TIME2 :=DBMS_UTILITY.GET_TIME;
  TIM   := TIME2
- TIME1;
END BIG_TABLE;