打开SQL Plus窗口，登录SYSTEM账户，密码是123

输入如下命令即可

```sql
ALTER USER KKCS_PDM IDENTIFIED BY 123;
ALTER USER KKCS_METADATA IDENTIFIED BY 123;
ALTER USER KKCS_ORG IDENTIFIED BY 123;
ALTER USER KKCS_TASK IDENTIFIED BY 123;
ALTER USER KKCS_FILE IDENTIFIED BY 123;
ALTER USER n_api IDENTIFIED BY 123;
ALTER USER esb IDENTIFIED BY 123;
```