Oracle网络服务端配置
Oracle网络周边配置支持3种应用连接C/S应用连接：sqlplus sys/x2145637@orcljava应用连接Web client应用连接支持的协议TCP/IPTCP
Oracle网络周边配置
支持3种应用连接
C/S应用连接：sqlplus sys/x2145637@orcl
java应用连接
Web client应用连接
支持的协议
TCP/IP
TCP/IP with SSL
Named pipes
SDP
oracle提供了2种java驱动
1.jdbc OCI Driver：封装oracle OCI（oracle call interface）
2.JDBC Thin Driver： 用java重写底层协议
概念和术语
service name：服务名，等于global_names=db_name+db_domain。
connect descriptor：IP地址和服务名。
Listener：服务端必须开启监听程序，监听程序接受PMON进程注册的Service Registration信息（服务名、实例名、service handlers）启动一个service handlers进程与之连接通信。
Service Registration：在listener注册服务，服务名，实例名，网络地址。
service handlers：服务处理者进程，listener进程派生的子进程。
PMON将服务信息（实例信息）注册给监听进程（如果监听程序没有开启，pmon进程每60s尝试连接一次监听进程，通过alter system register可修改），用户请求服务时，监听进程启动服务处理者进程进行与之通信。
五种命名解析方法
Host naming：基于操作系统解析
Local naming：tnsnames.ora
Directory naming:目录服务，ldap.ora
oracle Names
External naming
TNS:transparence Network Substrate透明网络底层
连接远程oracle服务器需配置tnsnames.ora，提供IP地址、端口、服务名。
listener进程连接方法（lsnrctl start 启动监听程序）
1.派生出子进程并将TCP描述符传给子进程
2.将TCP连接符传给oracle共享服务配置的dispatch进程
3.重定位给一个dispatch或服务进程，通过不同port
连接池存在着若干与数据库的长连接，可以立即连接到数据库
配置listener的2种方法
1、动态服务注册：pmon动态注册服务信息给listener，默认地址为PMON所在IP，端口为1521
不想使用默认的设置，必须设置初始化参数local_listener或者定义oracle共享服务器的dispatch的LISTENERS属性
只需配置初始化参数
1.1 SERVICE_NAMES=global database name=db_name+db_domain
1.2 INSTANCE_NAME
2、静态服务注册：修改listener.ora的信息
IPC服务器和客户端在同一机器，TCP/IP服务器和客户端在不同机器
可使用图形界面配置
2.1、netca
2.2、netmgr
lsnrctl实用程序
lsnrctl start listener_name
lsnrctl stop listener_name
进入lsnrctl后可设置一些参数
set trc_level ADMIN;追踪等级
show trc_directory；追踪文件目录
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