使用OEM,SQL*Plus,iSQL*Plus 管理Oracle实例

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使用OEM,SQL*Plus,iSQL*Plus 管理Oracle实例

leshami 2010-04-26 11:55:00 浏览586
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--==========================================

--使用OEM,SQL*Plus,iSQL*Plus 管理Oracle实例

--==========================================

/*

一、管理组件

    Oracle 10g数据库管理包含三个组件,本文主要介绍Database Control,SQL*PlusiSQL*Plus

       Database instance(数据库实例)  -->系统使用的后台进程

       Listener (监听器)              -->监听客户端连接到数据库

       Management interfance

           Database Control           -->OEM

          Management agent (when using Grid Control)  --网格管理

二、使用OEM管理Oracle        

    1.关于OEMOracle i开始就随软件提供企业管理器(OEM

        g中,oracledbca建库过程中会出现四个用户:sys,system,dbsnap,sysman

       (--dbsnap 用户用于OEM智能代理管理工作,sysman用户则是OEM的管理员帐号)

       如果在dbca建库过程中没有选择安装OEM,则没有dbsnapsysman用户,如果在dbca建库时选择启用database control管理数据库,

       则需要在数据库中建立一个sysmanschema,用于保存OEM的一些数据,这个就是OEM的资料档案库(repository),在G版本中,

       这个库存储在sysaux表空间中

      

    2.OEM的启动和关闭

    启动:emctl start dbconsole   启动后用浏览器http://IP:1158/em   来登陆OEM,进行图形化操作数据库

       关闭:emctl stop dbconsole

       状态:emctl status dbconsole                     */

       --下面演示EM启动到停止的过程

       [oracle@robinson scripts]$ emctl start dbconsole  --启动

        TZ set to PRC

        Oracle Enterprise Manager 10g Database Control Release 10.2.0.1.0 

        Copyright (c) 1996, 2005 Oracle Corporation.  All rights reserved.

        http://robinson.com:1158/em/console/aboutApplication

        Starting Oracle Enterprise Manager 10g Database Control ...................... started.

        ------------------------------------------------------------------

        Logs are generated in directory /u01/app/oracle/10g/robinson.com_orcl/sysman/log

        [oracle@robinson scripts]$ emctl status dbconsole    --查看状态

        TZ set to PRC

        Oracle Enterprise Manager 10g Database Control Release 10.2.0.1.0 

        Copyright (c) 1996, 2005 Oracle Corporation.  All rights reserved.

        http://robinson.com:1158/em/console/aboutApplication

        Oracle Enterprise Manager 10g is running.

        ------------------------------------------------------------------

        Logs are generated in directory /u01/app/oracle/10g/robinson.com_orcl/sysman/log

        [oracle@robinson scripts]$ emctl stop dbconsole      --停止

        TZ set to PRC

        Oracle Enterprise Manager 10g Database Control Release 10.2.0.1.0 

        Copyright (c) 1996, 2005 Oracle Corporation.  All rights reserved.

        http://robinson.com:1158/em/console/aboutApplication

        Stopping Oracle Enterprise Manager 10g Database Control ...

        ...  Stopped.

        /*

       

    3.重建OEM

    由于EM需要J2EE环境支持,正常创建后,在$ORACLE_HOME目录下将会建立一个

    类似$ORACLE_HOME/oc4j/j2ee/OC4J_DBConsole_<hostname>_<sid>的目录,如果此目录不存在,则EM将无法启动。

    另外,如果服务器修改过主机名等信息,导致OEM可能无法启动,此时需要重新配置EM   

        使用emca命令来重建EM档案库,关于emca的用户,使用emca -h 来查看详细说明 */

      

       [oracle@robinson scripts]$ emca -config dbcontrol db -repos recreate

 

       STARTED EMCA at Apr 21, 2010 3:09:04 PM

       EM Configuration Assistant, Version 10.2.0.1.0 Production

       Copyright (c) 2003, 2005, Oracle.  All rights reserved.

 

       Enter the following information:

       Database SID: orcl

       Database Control is already configured for the database orcl

       You have chosen to configure Database Control for managing the database orcl

       This will remove the existing configuration and the default settings and perform a fresh configuration

       Do you wish to continue? [yes(Y)/no(N)]: y

       Listener port number: 1521

       Password for SYS user: 

       Password for DBSNMP user: 

       Password for SYSMAN user: 

       Email address for notifications (optional):

       Outgoing Mail (SMTP) server for notifications (optional):

       -----------------------------------------------------------------

 

       You have specified the following settings

 

       Database ORACLE_HOME ................ /u01/app/oracle/10g

 

       Database hostname ................ robinson.com

       Listener port number ................ 1521

       Database SID ................ orcl

       Email address for notifications ...............

       Outgoing Mail (SMTP) server for notifications ...............

 

       -----------------------------------------------------------------

       Do you wish to continue? [yes(Y)/no(N)]: y

       Apr 21, 2010 3:09:24 PM oracle.sysman.emcp.EMConfig perform

       INFO: This operation is being logged at /u01/app/oracle/10g/cfgtoollogs/emca/orcl/emca_2010-04-21_03-09-04-PM.log.

       Apr 21, 2010 3:09:25 PM oracle.sysman.emcp.util.DBControlUtil stopOMS

       INFO: Stopping Database Control (this may take a while) ...

       Apr 21, 2010 3:09:32 PM oracle.sysman.emcp.EMReposConfig dropRepository

       INFO: Dropping the EM repository (this may take a while) ...

       Apr 21, 2010 3:11:41 PM oracle.sysman.emcp.EMReposConfig invoke

       INFO: Repository successfully dropped

       Apr 21, 2010 3:11:41 PM oracle.sysman.emcp.EMReposConfig createRepository

       INFO: Creating the EM repository (this may take a while) ...

       Apr 21, 2010 3:16:01 PM oracle.sysman.emcp.EMReposConfig invoke

       INFO: Repository successfully created

       Apr 21, 2010 3:16:08 PM oracle.sysman.emcp.util.DBControlUtil startOMS

       INFO: Starting Database Control (this may take a while) ...

       Apr 21, 2010 3:17:55 PM oracle.sysman.emcp.EMDBPostConfig performConfiguration

       INFO: Database Control started successfully

       Apr 21, 2010 3:17:55 PM oracle.sysman.emcp.EMDBPostConfig performConfiguration

       INFO: >>>>>>>>>>> The Database Control URL is http://robinson.com:1158/em <<<<<<<<<<<

       Enterprise Manager configuration completed successfully

       FINISHED EMCA at Apr 21, 2010 3:17:55 PM

       [oracle@robinson scripts]$ emctl status dbconsole

       TZ set to PRC

       Oracle Enterprise Manager 10g Database Control Release 10.2.0.1.0 

       Copyright (c) 1996, 2005 Oracle Corporation.  All rights reserved.

       http://robinson.com:1158/em/console/aboutApplication

       Oracle Enterprise Manager 10g is running.

       ------------------------------------------------------------------

       Logs are generated in directory /u01/app/oracle/10g/robinson.com_orcl/sysman/log

       /*

       注意:如果启动EM有问题,确保监听器已经启动

       打开浏览器,使用sysman用户登陆,也可以使用sys用户登陆,当使用sys用户登陆时,注意几点:

       a.口令文件存在并配置正常

       b.监听启动

       c.remote_login_passwordfile设置不能为NONE

       重建EM成功后,ORACLE主要创建的相关目录有个,分别是:

        a.$ORACLE_HOME/oc4j/j2ee/OC4J_DBConsole_<hostname>_<sid>

        b.$ORACLE_HOME/<hostname>_<sid>

      

    4.查看默认的端口号      */

       [oracle@robinson scripts]$ cat $ORACLE_HOME/install/portlist.ini

        iSQL*Plus HTTP port number =5560

        Enterprise Manager Console HTTP Port (orcl) = 1158

        Enterprise Manager Agent Port (orcl) = 3938

      /*   

      

    5.建议

        OEM管理和维护直观简单,但并不建议使用OEM来进行管理,因为JAVA的界面通常消耗的资源较多,

       加上网络连接的因素,OEM界面很容易失去响应,从而可能导致很多意外,通过命令行操作可以让

       我们更加熟悉ORACLE的本质,又可以减少低级的意外错误。

 

三、使用SQL*PlusiSQL*Plus管理Oracle

    SQL*PlusiSQL*Plus同样可以完成Oracle的管理工作,能够通过命令的方式来执行查询,更新,删除等操作

      

    1.SQL*Plus 使用相关账户登陆到到实例,启动数据库,完成相关的管理任务  */

      [oracle@robinson scripts]$ sqlplus / as sysdba

 

      SQL*Plus: Release 10.2.0.1.0 - Production on Wed Apr 21 15:38:54 2010

 

      Copyright (c) 1982, 2005, Oracle.  All rights reserved.

 

     Connected to:

     Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production

     With the Partitioning, OLAP and Data Mining options

 

     SQL>  

     /*

     

    2.iSQL*Plus(i开始出现的基于websqlplus工具)

      10giSQL*Plus的启动与关闭

      启动:isqlplusctl start

      关闭:isqlplusctl stop                    */

      [oracle@robinson scripts]$ isqlplusctl start

      perl: warning: Setting locale failed.

      perl: warning: Please check that your locale settings:

          LANGUAGE = (unset),

          LC_ALL = (unset),

          LANG = "en"

      are supported and installed on your system.

      perl: warning: Falling back to the standard locale ("C").

      iSQL*Plus 10.2.0.1.0

      Copyright (c) 2003, 2005, Oracle.  All rights reserved.

      Starting iSQL*Plus ...

      iSQL*Plus started.

 

      [oracle@robinson scripts]$ isqlplusctl stop

      perl: warning: Setting locale failed.

      perl: warning: Please check that your locale settings:

          LANGUAGE = (unset),

          LC_ALL = (unset),

          LANG = "en"

      are supported and installed on your system.

     perl: warning: Falling back to the standard locale ("C").

     iSQL*Plus 10.2.0.1.0

     Copyright (c) 2003, 2005, Oracle.  All rights reserved.

     Stopping iSQL*Plus ...

     iSQL*Plus stopped.

 

      /*

      修改iSQL*Plus默认端口号

      [oracle@robinson scripts]$ cat $ORACLE_HOME/oc4j/j2ee/isqlplus/config/http-web-site.xml |grep 5560

      <web-site port="5560" display-name="OC4J Java HTTP Web Site">  --将改为其他端口号即可

     

      启动isqlplus,然后通过浏览器登陆http://IP:5560/isqlplus

      注意:默认情况下,sysdba用户无法通过isqlplus登陆 

     

四、更多        */

 

    SQL/PLSQL 基础

   

    Oralce 10g 使用DBCA创建数据库

   

    使用Uniread实现SQLplus翻页功能

   

    Linux (RHEL 5.4)下安装Oracle 10g R2

   

    VmWare6.5.2下安装RHEL 5.4(配置Oracle安装环境)

   

    Oracle相关

 

    Oracle实例和Oracle数据库(Oracle体系结构)

      

 

 

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