oracle权限问题集合
1.oracle设置不同权限的用户去访问同一表空间
1.create user testa identified by testa;
2.alter user testa default tablespace users temporary tablespace temp;
3.grant connect to testa;
4.grant select any table to testa;
2.ORACLE中设置同一个用户对两个表空间的权限的代码
alter user 用户 quota unlimited on 表空间A;
alter user 用户 quota unlimited on 表空间B;
或者放开所有表空间
grant unlimited tablespace to 用户;
或者索性给所有权限
grant resource,connect,dba to 用户;
3.ORACLE设置只能访问表权限的用户
grant select on table1 to user1;
grant select on table2 to user1;
相关文档：
ORACLE没有象SQL SERVER中一样的自增加字段，要实现只能通过SEQUENCE来实现
1.创建序列：
create sequence your_seq
nocycle
maxvalue 9999999999
start with 1;
2.使用触发器实现自增：
create or replace trigger your_seq_tri
before insert on your_table1 for each row
declare
next_id number;
begin
se ......
Exam : Oracle 1Z0-051
Title : Oracle Database: SQL Fundamentals I
1. View the Exhibit to examine the description for the SALES table.
Which views can have all DML operations performed on it? (Choose all that apply.)
A. CREATE VIEW v3
AS SELECT * from SALES
WHERE cust_id = 2034
WITH CHECK OPTI ......
Exam : Oracle 1Z0-051
Title : Oracle Database: SQL Fundamentals I
1. View the Exhibit to examine the description for the SALES table.
Which views can have all DML operations performed on it? (Choose all that apply.)
A. CREATE VIEW v3
AS SELECT * from SALES
WHERE cust_id = 2034
WITH CHECK OPTI ......
情况描述：安装时选择的自动安装，由于时间久远忘记用户名、密码了，导致现在试了几个默认的用户名密码后，都提示无效的用户名、密码。
解决方法：启动SQLPLUS，提示输入用户名，然后输入sqlplus/as sysdba，密码为空。提示连接到信息，连接成功！
执行alter user sys identified by 密码;
设置成功！
现在可以从Enterp ......
