INSERT文を使用して新しいデータを入力するときにエラーが発生しました - 重複キーですか？

Question

私は、この要件を満たすために書いた以下のストアドプロシージャを実行しようとしています。コースに受講者を追加/登録するプロシージャProcedureName（p_snum、p_CallNum）を記述します。

Create or Replace Procedure ThreeOne(

    p_snum number, 
    p_CallNum number 

) AS 

    Begin 
    insert into Students (snum) values (p_snum); 
    insert into SchClasses (callnum) values (p_callnum); 
    commit; 
    rollback; 

    end; 
/
    set SERVEROUTPUT on 
    Execute ThreeOne(500,10500) 

しかしそうすることにより、私は、Oracle Developerで次のエラーを取得しています、と私は問題を解決する方法がわかりませんよ。それはおそらく露骨に明らかだが、私は自分の技術を向上させるために何が起こっているかを理解したいと思います：

Error starting at line : 17 in command - 
Execute ThreeOne(500,10500) 
Error report - 
ORA-00001: unique constraint (CORY.SYS_C0012641) violated 
ORA-06512: at "CORY.THREEONE", line 9 
ORA-06512: at line 1 
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. 

私のデータベーステーブルの作成ファイルデータ：

drop table enrollments; 
drop table prereq; 
drop table schclasses; 
drop table courses; 
drop table students; 
drop table majors; 

----- 
----- 


create table MAJORS 
    (major varchar2(3) Primary key, 
    mdesc varchar2(30)); 
insert into majors values ('ACC','Accounting'); 
insert into majors values ('FIN','Finance'); 
insert into majors values ('IS','Information Systems'); 
insert into majors values ('MKT','Marketing'); 

create table STUDENTS 
    (snum varchar2(3) primary key, 
    sname varchar2(10), 
    standing number(1), 
    major varchar2(3) constraint fk_students_major references majors(major), 
    gpa number(2,1), 
    major_gpa number(2,1)); 

insert into students values ('101','Andy',4,'IS',2.8,3.2); 
insert into students values ('102','Betty',2,null,3.2,null); 
insert into students values ('103','Cindy',3,'IS',2.5,3.5); 
insert into students values ('104','David',2,'FIN',3.3,3.0); 
insert into students values ('105','Ellen',1,null,2.8,null); 
insert into students values ('106','Frank',3,'MKT',3.1,2.9); 

create table COURSES 
    (dept varchar2(3) constraint fk_courses_dept references majors(major), 
    cnum varchar2(3), 
    ctitle varchar2(30), 
    crhr number(3), 
    standing number(1), 
    primary key (dept,cnum)); 

insert into courses values ('IS','300','Intro to MIS',3,2); 
insert into courses values ('IS','301','Business Communicatons',3,2); 
insert into courses values ('IS','310','Statistics',3,2); 
insert into courses values ('IS','355','Networks',3,3); 
insert into courses values ('IS','380','Database',3,3); 
insert into courses values ('IS','385','Systems',3,3); 
insert into courses values ('IS','480','Adv Database',3,4); 
insert into courses values ('IS','340','Application Programming',3,4); 

create table SCHCLASSES (
    callnum number(5) primary key, 
    year number(4), 
    semester varchar2(3), 
    dept varchar2(3), 
    cnum varchar2(3), 
    section number(2), 
    capacity number(3)); 

alter table schclasses 
    add constraint fk_schclasses_dept_cnum foreign key 
    (dept, cnum) references courses (dept,cnum); 

insert into schclasses values (10110,2013,'Sp','IS','300',1,45); 
insert into schclasses values (10115,2013,'Sp','IS','300',2,35); 
insert into schclasses values (10120,2013,'Sp','IS','380',3,35); 
insert into schclasses values (10125,2013,'Fa','IS','300',1,118); 
insert into schclasses values (10130,2013,'Fa','IS','301',1,33); 
insert into schclasses values (10135,2014,'Fa','IS','310',1,35); 
insert into schclasses values (10140,2014,'Fa','IS','310',2,35); 
insert into schclasses values (10145,2014,'Fa','IS','340',1,30); 
insert into schclasses values (10150,2014,'Fa','IS','380',1,33); 
insert into schclasses values (10155,2014,'Fa','IS','385',1,35); 
insert into schclasses values (10160,2014,'Fa','IS','480',1,35); 

create table PREREQ 
    (dept varchar2(3), 
    cnum varchar2(3), 
    pdept varchar2(3), 
    pcnum varchar2(3), 
    primary key (dept, cnum, pdept, pcnum)); 
alter table Prereq 
    add constraint fk_prereq_dept_cnum foreign key 
    (dept, cnum) references courses (dept,cnum); 
alter table Prereq 
    add constraint fk_prereq_pdept_pcnum foreign key 
    (pdept, pcnum) references courses (dept,cnum); 

insert into prereq values ('IS','380','IS','300'); 
insert into prereq values ('IS','380','IS','301'); 
insert into prereq values ('IS','380','IS','310'); 
insert into prereq values ('IS','385','IS','310'); 
insert into prereq values ('IS','340','IS','300'); 
insert into prereq values ('IS','480','IS','380'); 

create table ENROLLMENTS (
    snum varchar2(3) constraint fk_enrollments_snum references students(snum), 
    callnum number(5) constraint fk_enrollments_callnum references schclasses(callnum), 
    grade varchar2(2), 
    primary key (snum, callnum)); 

insert into enrollments values (101,10110,'A'); 
insert into enrollments values (102,10110,'B'); 
insert into enrollments values (103,10120,'A'); 
insert into enrollments values (101,10125,null); 
insert into enrollments values (102,10130,null); 
insert into enrollments values (104,10150,'A'); 
insert into enrollments values (102,10155,'C'); 
insert into enrollments values (101,10150,'B'); 
insert into enrollments values (103,10155,'A'); 
insert into enrollments values (101,10155,'B'); 
insert into enrollments values (103,10150,'A'); 





create table S (
    S# varchar2(3), 
    SNAME varchar2(20), 
    STATUS number(5), 
    CITY varchar2(20), 
    primary key (S#) 
); 

insert into S values ('S1','Smith',20,'London'); 
insert into S values ('S2','Jones',10,'Paris'); 
insert into S values ('S3','Blake',30,'Paris'); 
insert into S values ('S4','Clark',20,'London'); 
insert into S values ('S5','Adams',30,'Athens'); 

create table P (
    P# varchar2(3), 
    PNAME varchar2(20), 
    COLOR varchar2(20), 
    WEIGHT number(5), 
    CITY varchar2(20), 
    primary key (P#) 
); 

insert into P values ('P1','Nut','Red',12,'London'); 
insert into P values ('P2','Bolt','Green',17,'Paris'); 
insert into P values ('P3','Screw','Blue',17,'Rome'); 
insert into P values ('P4','Screw','Red',14,'London'); 
insert into P values ('P5','Cam','Blue',12,'Paris'); 
insert into P values ('P6','Cog','Red',19,'London'); 

create table SP (
    S# varchar2(3), 
    P# varchar2(3), 
    QTY number(10), 
    primary key (S#,P#) 
); 
alter table SP 
    add constraint fk_inventory_supplier foreign key (S#) references S (S#); 
alter table SP 
    add constraint fk_inventory_product foreign key (P#) references P (P#); 

insert into SP values ('S1','P1',300); 
insert into SP values ('S1','P2',200); 
insert into SP values ('S1','P3',400); 
insert into SP values ('S1','P4',200); 
insert into SP values ('S1','P5',100); 
insert into SP values ('S1','P6',100); 
insert into SP values ('S2','P1',300); 
insert into SP values ('S2','P2',400); 
insert into SP values ('S3','P2',200); 
insert into SP values ('S4','P2',200); 
insert into SP values ('S4','P4',300); 
insert into SP values ('S4','P5',400); 

create table CUSTOMERS (
    CNUM varchar2(3), 
    CNAME varchar2(20), 
    ACCOUNTBALANCE number(12,2), 
    TOTALMILAGE number(10), 
    primary key (CNUM) 
); 

insert into CUSTOMERS values ('101','Andy',85.25,2152); 
insert into CUSTOMERS values ('102','Betty',170.00,108); 
insert into CUSTOMERS values ('103','Cindy',-55.13,3); 
insert into CUSTOMERS values ('104','David',1308.02,5510); 
insert into CUSTOMERS values ('105','Ellen',99.77,11150); 
insert into CUSTOMERS values ('106','Frank',-0.02,80); 


commit; 

任意のポインタをいただければ幸いです。

Answer 1

調査の結果、私は実際にすでに存在していた重複データを挿入しようとしていることに気付きました。さらに、私はパラメータタイプに間違った割り当てを使用していて、可変パスのために適切な量のスペースとデータタイプを許可していないことに気付きました。

ご協力いただきありがとうございます。