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推荐通过emca的帮助文档指导您的操作
1、移除已有配置
emca -deconfig dbcontrol db [-repos drop] [-cluster] [-silent] [parameters]: de-configure Database Control
输入以下信息:
数据库 SID: 输入您的数据sid，例如orcl
是否继续? [是(Y)/否(N)]: y
2、删除仓库repository
emca -repos drop: drop the current Database Control repository
提示您输入以下信息:
数据库 SID: 输入您的数据sid，例如orcl
监听程序端口号: 输入数据库的监听器端口,例如1521,如果您变更过数据库的监听器端口，这里必须修改
SYS 用户的口令:口令必须正确,可以使用“alter user 用户名 identified by 密码”分别为每个账户设置统一的密码
SYSMAN 用户的口令:口令必须正确,可以使用“alter user 用户名 identified by 密码”分别为每个账户设置统一的密码
是否继续? [是(Y)/否(N)]: y
3、创建仓库
emca -repos create: create a new Database Control repository
提示您输入以下信息:
数据库 SID: 输入您的数据sid，例如orcl
监听程序端口号: 输入数据库的监听器端口,如果您变更过数据库的监听器端口，这里必须修改
SYS 用户的口令:
SYSMAN 用户的口令:口令必须正确,可以使用“alter user 用户名 identified by 密码”分别为每个账户设置统一的密码
是否继续? [是(Y)/否(N)]: y
4、重新创建数据库em配置信息
emca -config dbcontrol db [-repos (create | recreate)] [-cluster] [-silent] [-backup] [parameters]: configure Database Control for a database
提示您输入以下信息:
数据库 SID:输入您的数据sid，例如orcl
监听程序端口号:输入数据库的监听器端口,如果您变更过数据库的监听器端口，这里必须修改
监听程序 ORACLE_HOME [ /opt/oracle/or11g2product11.2.0dbhome_1 ]:确认可以直接回车
SYS 用户的口令:口令必须正确,可以使用“alter user 用户名 identified by 密码”分别为每个账户设置统一的密码
DBSNMP 用户的口令:口令必须正确,可以使用“alter user 用户名 identified by 密码”分别为每个账户设置统一的密码
通知的电子邮件地址 (可选):
通知的发件 (SMTP) 服务器 (可选):
以上第4步完成后,会自动启动em console
5、查看em状态
emctl status dbconsole
输出如下：
Oracle Enterprise Manager 11g Database Control Release 11.2.0.1.0
Copyright (c) 1996,2009 Oracle Corporation. All rights reserved.
https://主机名:1158/em/console/aboutApplication
Oracle Enterprise Manager 11g is running.
------------------------------------------------------------------
Logs are generated in directory /opt/oracle/11gr2/test/sysman/log
6、使用emctl管理em console
启动和停止操作：
emctl start | stop dbconsole
其它操作：
emctl status | secure | setpasswd dbconsole
emctl config dbconsole -heap_size <size_value> -max_perm_size <size_value>
emctl status agent
emctl status agent -secure [-omsurl <http://<oms-hostname>:<oms-unsecure-port>/em/*>]
emctl getversion
emctl reload | upload | clearstate | getversion agent
emctl reload agent dynamicproperties [<Target_name>:<Target_Type>]....
emctl config agent <options>
emctl config agent updateTZ
emctl config agent getTZ
emctl resetTZ agent
emctl config agent credentials [<Target_name>[:<Target_Type>]]
emctl gensudoprops
emctl clearsudoprops
Blackout Usage :
emctl start blackout <Blackoutname> [-nodeLevel] [<Target_name>[:<Target_Type>]].... [-d <Duration>]
emctl stop blackout <Blackoutname>
emctl status blackout [<Target_name>[:<Target_Type>]]....
The following are valid options for blackouts
<Target_name:Target_type> defaults to local node target if not specified.
If -nodeLevel is specified after <Blackoutname>,the blackout will be applied to all targets and any target list that follows will be ignored.
Duration is specified in [days] hh:mm
emctl getemhome
emctl ilint
Em Key Commands Usage :
emctl config emkey -emkeyfile <emkey.ora path> [-force] [-sysman_pwd <sysman password>]
emctl config emkey -emkey [-emkeyfile <emkey.ora path>] [-force] [-sysman_pwd <sysman password>]
emctl config emkey -repos [-emkeyfile <emkey.ora path>] [-force] [-sysman_pwd <sysman password>]
emctl config emkey -remove_from_repos [-sysman_pwd <sysman password>]
emctl config emkey -copy_to_repos [-sysman_pwd <sysman password>]
emctl status emkey [-sysman_pwd <sysman password>]
Secure DBConsole Usage :
emctl secure dbconsole -sysman_pwd <sysman password> [-passwd_file <abs file loc>]
[-host <slb hostname>] [-sid <service name>] [-reset] [-secure_port <secure_port>]
[-root_dc <root_dc>] [-root_country <root_country>] [-root_state <root_state>] [-root_loc <root_loc>]
[-root_org <root_org>] [-root_unit <root_unit>] [-root_email <root_email>]
[-wallet <wallet loc>] [-wallet_pwd <wallet pwd>] [-trust_certs_loc <certs loc>]
emctl secure status dbconsole
Register Targettype Usage :
emctl register oms targettype [-o <Output filename>] <XML filename> <rep user> <rep passwd> <rep host> <rep port> <rep sid> OR
emctl register oms targettype [-o <Output filename>] <XML filename> <rep user> <rep passwd> <rep connect descriptor>
7、修改em的默认端口为其它端口(安全需要)
emca -reconfig ports -DBCONTROL_HTTP_PORT 1190
以上1190为新的端口号，修改成功后可以使用emctl status dbconsole再次查看状态
8、其它：
根据需要采用静默模式删除一个已经存在的数据库(危险操作,请勿模仿)。
8.1、删除切记做到数据备份
8.2、执行命令
dbca -silent -deleteDatabase -sourceDB 数据库名 -sid 数据库实例名 -sysDBAUserName DBA用户名 -sysDBAPassword DBA用户密码
来看看dbca -help的说明：
Delete a database by specifying the following parameters:
-deleteDatabase
-sourceDB <source database sid>
[-sysDBAUserName <user name with SYSDBA privileges>
-sysDBAPassword <password for sysDBAUserName user name>]
最后附上：上述危险动作请勿模仿。 （编辑：李大同）
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