连接Oracle提示 ORA-28009: 应当以 SYSDBA 身份或 SYSOPER 身份建立 SYS 连接

用eclipse测试Oracle连接时候报错： ORA-28009: 应当以 SYSDBA 身份或 SYSOPER 身份建立 SYS 连接

解决办法:打开SQL plus并且进行连接（win+r敲入命令：sqlplus /nolog）进入SQL plus，然后创建新的用户并且设置密码以及一系列的操作：

-- 使用超级管理员登录
CONN sys/change_on_install AS SYSDBA ;

-- 创建c##scott用户
CREATE USER c##scott IDENTIFIED BY tiger ;

-- 为用户授权
GRANT CONNECT,RESOURCE,UNLIMITED TABLESPACE TO c##scott CONTAINER=ALL ;

-- 设置用户使用的表空间
ALTER USER c##scott DEFAULT TABLESPACE USERS;
ALTER USER c##scott TEMPORARY TABLESPACE TEMP;

-- 使用c##scott用户登录
CONNECT c##scott/tiger

-- 删除数据表
DROP TABLE emp  PURGE ;
DROP TABLE dept PURGE ;
DROP TABLE bonus PURGE ;
DROP TABLE salgrade PURGE ;

-- 创建数据表
CREATE TABLE dept (
 deptno NUMBER(2) CONSTRAINT PK_DEPT PRIMARY KEY,
 dname VARCHAR2(14) ,
 loc VARCHAR2(13) ) ;
CREATE TABLE emp (
 empno NUMBER(4) CONSTRAINT PK_EMP PRIMARY KEY,
 ename VARCHAR2(10),
 job VARCHAR2(9),
 mgr NUMBER(4),
 hiredate DATE,
 sal NUMBER(7,2),
 comm NUMBER(7,2),
 deptno NUMBER(2) CONSTRAINT FK_DEPTNO REFERENCES DEPT );
CREATE TABLE bonus (
 enamE VARCHAR2(10) ,
 job VARCHAR2(9)  ,
 sal NUMBER,
 comm NUMBER ) ;
CREATE TABLE salgrade (
 grade NUMBER,
 losal NUMBER,
 hisal NUMBER );

-- 插入测试数据 —— dept
INSERT INTO dept VALUES (10,'ACCOUNTING','NEW YORK');
INSERT INTO dept VALUES (20,'RESEARCH','DALLAS');
INSERT INTO dept VALUES (30,'SALES','CHICAGO');
INSERT INTO dept VALUES (40,'OPERATIONS','BOSTON');
-- 插入测试数据 —— emp
INSERT INTO emp VALUES (7369,'SMITH','CLERK',7902,to_date('17-12-1980','dd-mm-yyyy'),800,NULL,20);
INSERT INTO emp VALUES (7499,'ALLEN','SALESMAN',7698,to_date('20-2-1981','dd-mm-yyyy'),1600,300,30);
INSERT INTO emp VALUES (7521,'WARD','SALESMAN',7698,to_date('22-2-1981','dd-mm-yyyy'),1250,500,30);
INSERT INTO emp VALUES (7566,'JONES','MANAGER',7839,to_date('2-4-1981','dd-mm-yyyy'),2975,NULL,20);
INSERT INTO emp VALUES (7654,'MARTIN','SALESMAN',7698,to_date('28-9-1981','dd-mm-yyyy'),1250,1400,30);
INSERT INTO emp VALUES (7698,'BLAKE','MANAGER',7839,to_date('1-5-1981','dd-mm-yyyy'),2850,NULL,30);
INSERT INTO emp VALUES (7782,'CLARK','MANAGER',7839,to_date('9-6-1981','dd-mm-yyyy'),2450,NULL,10);
INSERT INTO emp VALUES (7788,'SCOTT','ANALYST',7566,to_date('19-04-1987','dd-mm-yyyy')-85,3000,NULL,20);
INSERT INTO emp VALUES (7839,'KING','PRESIDENT',NULL,to_date('17-11-1981','dd-mm-yyyy'),5000,NULL,10);
INSERT INTO emp VALUES (7844,'TURNER','SALESMAN',7698,to_date('8-9-1981','dd-mm-yyyy'),1500,0,30);
INSERT INTO emp VALUES (7876,'ADAMS','CLERK',7788,to_date('23-05-1987','dd-mm-yyyy')-51,1100,NULL,20);
INSERT INTO emp VALUES (7900,'JAMES','CLERK',7698,to_date('3-12-1981','dd-mm-yyyy'),950,NULL,30);
INSERT INTO emp VALUES (7902,'FORD','ANALYST',7566,to_date('3-12-1981','dd-mm-yyyy'),3000,NULL,20);
INSERT INTO emp VALUES (7934,'MILLER','CLERK',7782,to_date('23-1-1982','dd-mm-yyyy'),1300,NULL,10);
-- 插入测试数据 —— salgrade
INSERT INTO salgrade VALUES (1,700,1200);
INSERT INTO salgrade VALUES (2,1201,1400);
INSERT INTO salgrade VALUES (3,1401,2000);
INSERT INTO salgrade VALUES (4,2001,3000);
INSERT INTO salgrade VALUES (5,3001,9999);

-- 事务提交
COMMIT;

这样就可以了：