1，启动ASM 数据库的步骤
由于启动ASM 数据库必须要先启动ASM 实例，所以基本上启动步骤如下。
1． 以oracle 用户进入操作系统
2． $ export ORACLE_SID=+ASM
3,
[oracle@Rm-DevDB ~]$ sqlplus
SQL*Plus: Release 10.2.0.1.0 - Production on Sun May 16 16:55:02 2010
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Enter user-name: /as sysdba
Connected to an idle instance.
SQL>
4． SQL> startup
SQL> startup
ASM instance started
Total System Global Area 130023424 bytes
Fixed Size 2019032 bytes
Variable Size 102838568 bytes
ASM Cache 25165824 bytes
ASM diskgroups mounted
SQL> exit
5． SQL> exit
6． $ export ORACLE_SID=<your_real_db_sid>
7． SQL> sqlplus / as sysdba
8． SQL> startup
SQL> startup
ORACLE instance started.
Total System Global Area 1224736768 bytes
Fixed Size 2020384 bytes
Variable Size 318770144 bytes
Database Buffers 889192448 bytes
Redo Buffers 14753792 bytes
Database mounted.
Database opened.
需要重新启动2遍
8.启动监听器：[oracle@Rm-DevDB ~]$ lsnrctl start
9,启动em控制器：[oracle@Rm-DevDB ~]$ emctl start dbconsole
2，配置listener.ora
正常的监听器为
[oracle@Rm-DevDB admin]$ lsnrctl status
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 16-MAY-2010 16:36:20
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=Rm-DevDB)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 10.2.0.1.0 - Production
Start Date 16-MAY-2010 14:54:58
Uptime 0 days 1 hr. 41 min. 22 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /opt/app/oracle/product/10.2.0.1/db_1/network/admin/listener.ora
Listener Log File /opt/app/oracle/product/10.2.0.1/db_1/network/log/listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=Rm-DevDB)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC0)))
Services Summary...
Service "+ASM" has 1 instance(s).
Instance "+ASM", status BLOCKED, has 1 handler(s) for this service...
Service "+ASM_XPT" has 1 instance(s).
Instance "+ASM", status BLOCKED, has 1 handler(s) for this service...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "rmsdata1" has 1 instance(s).
Instance "rmsdata1", status READY, has 1 handler(s) for this service...
Service "rmsdata1XDB" has 1 instance(s).
Instance "rmsdata1", status READY, has 1 handler(s) for this service...
Service "rmsdata1_XPT" has 1 instance(s).
Instance "rmsdata1", status READY, has 1 handler(s) for this service...
The command completed successfully
-------------------------------------------------------------------------
listener.ora 这个文件的配置
监听器的操作命令
$ORACLE_HOME/bin/lsnrctl start,其他诸如stop,status等。具体敲完一个lsnrctl后看帮助。
服务器端配置
[oracle@rs2600-2 admin]$ vi listener.ora
# listener.ora Network Configuration File: /opt/app/oracle/product/10.2.0/server/network/admin/listener.ora
# Generated by Oracle configuration tools.
LSNRASM =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = rs2600-2)(PORT = 1521))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
)
)
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = +ASM)
(ORACLE_HOME = /opt/app/oracle/product/10.2.0/server)
(SID_NAME = +ASM)
)
(SID_DESC =
(GLOBAL_DBNAME = danghj)
(ORACLE_HOME = /opt/app/oracle/product/10.2.0/server)
(SID_NAME = danghj)
)
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /opt/app/oracle/product/10.2.0/server)
(PROGRAM = extproc)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = rs2600-2)(PORT = 1521))
)
)
客户端的配置
ASM_172.22.11.124 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 172.22.11.124)(PORT = 1521))
)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = danghj)
)
)
3，tnsnames.ora和tnsnames.ora的作用
当你输入sqlplus sys/oracle@orcl的时候
1． 查询sqlnet.ora看看名称的解析方式，发现是TNSNAME
2． 则查询tnsnames.ora文件，从里边找orcl的记录，并且找到主机名，端口和service_name
3． 如果listener进程没有问题的话，建立与listener进程的连接。
4． 根据不同的服务器模式如专用服务器模式或者共享服务器模式，listener采取接下去的动作。默认是专用服务器模式，没有问题的话客户端就连接上了数据 库的server process。
5． 这时候网络连接已经建立，listener进程的历史使命也就完成了。