sql - Oracle テーブルでテスト データを生成する

Question

これらの Oracle テーブルのテスト データを作成します。

CREATE TABLE AGENT_HISTORY(
  EVENT_ID INTEGER NOT NULL,
  AGENTID INTEGER NOT NULL,
  EVENT_DATE DATE NOT NULL
)
/

CREATE TABLE CPU_HISTORY(
  CPU_HISTORY_ID INTEGER NOT NULL,
  EVENT_ID INTEGER NOT NULL,
  CPU_NAME VARCHAR2(50 ) NOT NULL,
  CPU_VALUE NUMBER NOT NULL
)
/

100行のランダム値を生成する手順を作成するのを手伝ってもらえますか?

私はこれを試しました

BEGIN

  FOR loop_counter IN 1..1000
  LOOP
    INSERT INTO AGENT_HISTORY (EVENT_ID, AGENTID, EVENT_DATE)
    VALUES (loop_counter, 22, SYSDATE);
  END LOOP;

  COMMIT;   

  FOR loop_counter IN 1..1000
  LOOP
    INSERT INTO CPU_HISTORY_ID (CPU_HISTORY_ID, EVENT_ID, CPU_NAME, CPU_VALUE)
    VALUES (loop_counter, loop_counter, 'cpu1', dbms_random.value(1,100));
  END LOOP;

  COMMIT;
END;

しかし、私はこれらのエラーが発生します:

Error report -
ORA-00001: unique constraint (ADMIN.KEY8) violated
ORA-06512: at line 5
00001. 00000 -  "unique constraint (%s.%s) violated"
*Cause:    An UPDATE or INSERT statement attempted to insert a duplicate key.
           For Trusted Oracle configured in DBMS MAC mode, you may see
           this message if a duplicate entry exists at a different level.
*Action:   Either remove the unique restriction or do not insert the key.

Error report -
ORA-06550: line 5, column 16:
PL/SQL: ORA-00942: table or view does not exist
ORA-06550: line 5, column 4:
PL/SQL: SQL Statement ignored
06550. 00000 -  "line %s, column %s:\n%s"
*Cause:    Usually a PL/SQL compilation error.
*Action: