create user testuser(用户名) identified by testpassword(密码);
conn testuser/testpassword(连接到用户)
conn sys/sys as sysdba连接到DBA
grant unlimited tablespace to testuser(授权无限表空间)
grant create table to testuser(授权创建表)
conn testuser/testpassword;(连接到用户testuser)
create table......可以成功的创建表了