oracle数据库软件和实例安装好以后的配置

=======tnsnames.ora:# tnsnames.ora Network Configuration File: H:\app\Administrator\product\11.2.0\dbhome_1\network\admin\tnsnames.ora# Generated by Oracle configuration tools.#*****ORCL1 =  (DESCRIPTION =    (ADDRESS = (PROTOCOL = TCP)(HOST = 60.*****)(PORT = 1521))    (CONNECT_DATA =      (SERVER = DEDICATED)      (SERVICE_NAME = orcl.sunny.com)    )  )#*****ORCL2 =  (DESCRIPTION =    (ADDRESS = (PROTOCOL = TCP)(HOST = 10.*****)(PORT = 1521))    (CONNECT_DATA =      (SERVER = DEDICATED)      (SERVICE_NAME = orcl)    )  ) #*****ORCL3=  (DESCRIPTION =    (ADDRESS = (PROTOCOL = TCP)(HOST = 10.*****)(PORT = 1521))    (CONNECT_DATA =      (SERVER = DEDICATED)      (SERVICE_NAME = orcl.sunny)    )  )========listener.ora:# listener.ora Network Configuration File: H:\app\Administrator\product\11.2.0\dbhome_1\network\admin\listener.ora# Generated by Oracle configuration tools.SID_LIST_LISTENER =  (SID_LIST =    (SID_DESC =      (SID_NAME = CLRExtProc)      (ORACLE_HOME = H:\app\Administrator\product\11.2.0\dbhome_1)      (PROGRAM = extproc)      (ENVS = "EXTPROC_DLLS=ONLY:H:\app\Administrator\product\11.2.0\dbhome_1\bin\oraclr11.dll")    )  )LISTENER =  (DESCRIPTION_LIST =    (DESCRIPTION =      (ADDRESS = (PROTOCOL = TCP)(HOST = 60.*****)(PORT = 1521))      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))    )  )LISTENER =  (DESCRIPTION_LIST =    (DESCRIPTION =      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.*****)(PORT = 1521))     (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))    )  )LISTENER =  (DESCRIPTION_LIST =    (DESCRIPTION =      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.*****)(PORT = 1521))     (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))    )  )ADR_BASE_LISTENER = H:\app\Administrator===================================================//2015-03-27熟悉oracle数据库的基本知识，熟悉plsql操作：//查询当前数据库名：select name from v$database;               //结果：ORCL//查询当前数据库实例名：（SID）//实例名指的是用于响应某个数据库操作的数据库管理系统的名称。它同时也叫SID。//数据库实例名(instance_name)用于对外部连接。在操作系统中要取得与数据库的联系，必须使用数据库实例名。//比如我们作开发，要连接数据库，就得连接数据库实例名：//jdbc:oracle:thin:@localhost:1521:orcl（orcl就为数据库实例名）//一个数据库可以有多个实例，在作数据库服务集群的时候可以用到。select instance_name from v$instance;     //结果：orcl,数据库实例名用于对外部连接，要连接数据库，就得连接数据库实例名。===========================================================================================================//scott用户访问表emp;select * from emp;//dept表select * from dept;//salgrade表select * from salgrade;===========================================================================================================//创建完数据库后，并不能立即在数据库中建表，必须先创建该数据库的用户，并且为该用户指定表空间。//安徽工情//1.创建表空间"ahdemo"select instance_name from v$instance;  create tablespace ahdemo datafile 'H:\app\Administrator\oradata\orcl\ahdemo.dbf' size 500m autoextend on next 100m maxsize 2048m; //表空间最大2g//查看已经创建好的表空间select default_tablespace,temporary_tablespace,d.username from dba_users d  where d.username like '%ah%' group by d.default_tablespace, d.temporary_tablespace, d.username. //查看所有表空间大小 select tablespace_name,sum(bytes)/1024/1024 from dba_data_files group by tablespace_name;//2.创建用户"ahuser",并为之分配创建的表空间和临时表空间，并为之授权create user ahuser identified by "Sunny_123456]" default tablespace ahdemo temporary tablespace temp;//有了用户，要想使用用户账号管理自己的表空间，还得给它分权限：(ahuser已被授予了connect/resource/dba三种权限)grant connect to ahuser; grant resource to ahuser;grant dba to ahuser;//查看数据库用户select * from dba_users order by created desc;//=====================================================================================//操作表//==========================tb_users===select *  from tb_users;//==========================tb_dept===select *  from tb_dept;