配置oracle11g EM db control
创建一个EM资料库
emca -repos create
重建一个EM资料库
emca -repos recreate
删除一个EM资料库
emca -repos drop
配置数据库的 Database Control
emca -config dbcontrol db
删除数据库的 Database Control配置
emca -deconfig dbcontrol db
重新配置db control的端口，默认端口在1158
emca -reconfig ports
emca -reconfig ports -dbcontrol_http_port 1160
emca -reconfig ports -agent_port 3940
先设置ORACLE_SID环境变量后,启动EM console服务
emctl start dbconsole
先设置ORACLE_SID环境变量后,停止EM console服务
emctl stop dbconsole
先设置ORACLE_SID环境变量后,查看EM console服务的状态
emctl status dbconsole
emca -repos create
重建一个EM资料库
emca -repos recreate
删除一个EM资料库
emca -repos drop
配置数据库的 Database Control
emca -config dbcontrol db
删除数据库的 Database Control配置
emca -deconfig dbcontrol db
重新配置db control的端口，默认端口在1158
emca -reconfig ports
emca -reconfig ports -dbcontrol_http_port 1160
emca -reconfig ports -agent_port 3940
先设置ORACLE_SID环境变量后,启动EM console服务
emctl start dbconsole
先设置ORACLE_SID环境变量后,停止EM console服务
emctl stop dbconsole
先设置ORACLE_SID环境变量后,查看EM console服务的状态
emctl status dbconsole
配置dbconsole的步骤
emca -repos create
emca -config dbcontrol db
emctl start dbconsole
重新配置dbconsole的步骤
emca -repos drop
emca -repos create
emca -config dbcontrol db
emctl start dbconsole
-------------
emca -repos create
emca -config dbcontrol db
emctl start dbconsole
重新配置dbconsole的步骤
emca -repos drop
emca -repos create
emca -config dbcontrol db
emctl start dbconsole
-------------
oracle从10g以来一直大力推荐dba通过EM来进行管理，不管个人的喜好如何，都不能否认EM还是具有很强的易用性的。
前阵子装好了11g后，发现oracle11g文档很多快速管理指南的内容都是通过EM来进行的，但我在文档上并没找到EM的安装说明，于是试着通过10g的说明来对其进行配置。
从安装软件上看，我并没找到
grid control部分，不知道是不是还没有推出，下面简单描述一下db control的配置过程以及遇到的几个问题。
跟10g的方法相仿，oracle11g也可以通过EMCA来配置db control（在装数据库时候用dbca可以同时创建em）
登陆oracle用户，执行emca -h命令后可以看到emca的各种配置参数及选项，具体参数的说明可以参考10g中的说明（可在Introduction to Enterprise Manager Advanced Configuration中找到）。执行emca -config dbcontrol db -repos create，按提示输入一些配置后，创建过程开始，可惜建到一半后，SYSAUX空间不足，报错退出了。看来自10G以后SYSAUX空间的要求越来越大了，这里要注意，不光是sysaux表空间，system表空间也要有足够的空闲。
扩展表空间后执行emca -config dbcontrol db -repos recreate准备重新开始创建，结果刚一开始就报错退出了，竟然是报没有tns监听，lsnrctl status检查监听是启的，用配置的tnsnames连接数据库也能连上，想了很久后怀疑跟监听没有采用动态注册方式有关，可按道理在一些缺省条件达成的情况的下，动态注册是自动生效的。lsnrctl status命令再看了一下，动态注册果然没有启动，没办法只能试试强制指定了，tnsnames里增加
listener1=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=oratest)(PORT=1521))
)
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=oratest)(PORT=1521))
)
并指定local_listener＝listener1后，动态注册立即生效了。至于为啥，我不知道，新特性还是bug？以后再说吧（10G没怎么玩过，不知道有没这个问题）
重新执行
emca -config dbcontrol db -repos recreate，成功，开始drop以前的配置了，之后一切顺利，执行过程及结果消息如下：
$ emca -config dbcontrol db -repos recreate
STARTED EMCA at Aug 29, 2007 8:40:57 AM
EM Configuration Assistant, Version 11.1.0.5.0 Production
Copyright (c) 2003, 2005, Oracle. All rights reserved.
EM Configuration Assistant, Version 11.1.0.5.0 Production
Copyright (c) 2003, 2005, Oracle. All rights reserved.
Enter the following information:
Database SID: test11g
Listener port number: 1521
Password for SYS user:
Password for SYSMAN user: Email address for notifications (optional):
Outgoing Mail (SMTP) server for notifications (optional):
-----------------------------------------------------------------
Database SID: test11g
Listener port number: 1521
Password for SYS 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 ................ /oracle11g/product/11g
Local hostname ................ oratest
Listener port number ................ 1521
Database SID ................ test11g
Email address for notifications ...............
Outgoing Mail (SMTP) server for notifications ...............
Listener port number ................ 1521
Database SID ................ test11g
Email address for notifications ...............
Outgoing Mail (SMTP) server for notifications ...............
-----------------------------------------------------------------
Do you wish to continue? [yes(Y)/no(N)]: Y
Aug 29, 2007 8:41:20 AM oracle.sysman.emcp.EMConfig perform
INFO: This operation is being logged at /oracle11g/cfgtoollogs/emca/test11g/emca_2007_08_29_08_40_56.log.
Aug 29, 2007 8:41:30 AM oracle.sysman.emcp.EMReposConfig invoke
INFO: Dropping the EM repository (this may take a while) ...
Aug 29, 2007 8:50:26 AM oracle.sysman.emcp.EMReposConfig invoke
INFO: Repository successfully dropped
Aug 29, 2007 8:50:28 AM oracle.sysman.emcp.EMReposConfig createRepository
INFO: Creating the EM repository (this may take a while) ...
Aug 29, 2007 9:16:21 AM oracle.sysman.emcp.EMReposConfig invoke
INFO: Repository successfully created
Aug 29, 2007 9:17:05 AM oracle.sysman.emcp.EMReposConfig uploadConfigDataToRepository
INFO: Uploading configuration data to EM repository (this may take a while) ...
Aug 29, 2007 9:20:57 AM oracle.sysman.emcp.EMReposConfig invoke
INFO: Uploaded configuration data successfullyAug 29, 2007 9:21:22 AM oracle.sysman.emcp.util.DBControlUtil configureSoftwareLib
INFO: Software library configured successfully.
Aug 29, 2007 9:21:22 AM oracle.sysman.emcp.EMDBPostConfig configureSoftwareLibrary
INFO: Deploying Provisioning archives ...
Aug 29, 2007 9:26:27 AM oracle.sysman.emcp.EMDBPostConfig configureSoftwareLibrary
INFO: Provisioning archives deployed successfully.
Aug 29, 2007 9:26:27 AM oracle.sysman.emcp.util.DBControlUtil secureDBConsole
INFO: Securing Database Control (this may take a while) ...
Aug 29, 2007 9:27:34 AM oracle.sysman.emcp.util.DBControlUtil secureDBConsole
INFO: Database Control secured successfully.
Aug 29, 2007 9:27:34 AM oracle.sysman.emcp.util.DBControlUtil startOMS
INFO: Starting Database Control (this may take a while) ...
Aug 29, 2007 9:36:05 AM oracle.sysman.emcp.EMDBPostConfig performConfiguration
INFO: Database Control started successfully
Aug 29, 2007 9:36:08 AM oracle.sysman.emcp.EMDBPostConfig performConfiguration
INFO: >>>>>>>>>>> The Database Control URL is https://oratest:1158/em <<<<<<<<<<<
Aug 29, 2007 9:37:50 AM oracle.sysman.emcp.EMDBPostConfig invoke
WARNING:
************************ WARNING ************************
Do you wish to continue? [yes(Y)/no(N)]: Y
Aug 29, 2007 8:41:20 AM oracle.sysman.emcp.EMConfig perform
INFO: This operation is being logged at /oracle11g/cfgtoollogs/emca/test11g/emca_2007_08_29_08_40_56.log.
Aug 29, 2007 8:41:30 AM oracle.sysman.emcp.EMReposConfig invoke
INFO: Dropping the EM repository (this may take a while) ...
Aug 29, 2007 8:50:26 AM oracle.sysman.emcp.EMReposConfig invoke
INFO: Repository successfully dropped
Aug 29, 2007 8:50:28 AM oracle.sysman.emcp.EMReposConfig createRepository
INFO: Creating the EM repository (this may take a while) ...
Aug 29, 2007 9:16:21 AM oracle.sysman.emcp.EMReposConfig invoke
INFO: Repository successfully created
Aug 29, 2007 9:17:05 AM oracle.sysman.emcp.EMReposConfig uploadConfigDataToRepository
INFO: Uploading configuration data to EM repository (this may take a while) ...
Aug 29, 2007 9:20:57 AM oracle.sysman.emcp.EMReposConfig invoke
INFO: Uploaded configuration data successfullyAug 29, 2007 9:21:22 AM oracle.sysman.emcp.util.DBControlUtil configureSoftwareLib
INFO: Software library configured successfully.
Aug 29, 2007 9:21:22 AM oracle.sysman.emcp.EMDBPostConfig configureSoftwareLibrary
INFO: Deploying Provisioning archives ...
Aug 29, 2007 9:26:27 AM oracle.sysman.emcp.EMDBPostConfig configureSoftwareLibrary
INFO: Provisioning archives deployed successfully.
Aug 29, 2007 9:26:27 AM oracle.sysman.emcp.util.DBControlUtil secureDBConsole
INFO: Securing Database Control (this may take a while) ...
Aug 29, 2007 9:27:34 AM oracle.sysman.emcp.util.DBControlUtil secureDBConsole
INFO: Database Control secured successfully.
Aug 29, 2007 9:27:34 AM oracle.sysman.emcp.util.DBControlUtil startOMS
INFO: Starting Database Control (this may take a while) ...
Aug 29, 2007 9:36:05 AM oracle.sysman.emcp.EMDBPostConfig performConfiguration
INFO: Database Control started successfully
Aug 29, 2007 9:36:08 AM oracle.sysman.emcp.EMDBPostConfig performConfiguration
INFO: >>>>>>>>>>> The Database Control URL is https://oratest:1158/em <<<<<<<<<<<
Aug 29, 2007 9:37:50 AM oracle.sysman.emcp.EMDBPostConfig invoke
WARNING:
************************ WARNING ************************
Management Repository has been placed in secure mode wherein Enterprise Manager data will be encrypted. The encryption key has been placed in the file: /oracle11g/product/11g/oratest_test11g/sysman/config/emkey.ora. Please ensure this file is backed up as the encrypted data will become unusable if this file is lost.
***********************************************************
Enterprise Manager configuration completed successfully
FINISHED EMCA at Aug 29, 2007 9:37:51 AM
Enterprise Manager configuration completed successfully
FINISHED EMCA at Aug 29, 2007 9:37:51 AM
emkey.ora是密钥的所在地所以如果在生成系统上还是需要备份好的。
$ more /oracle11g/product/11g/oratest_test11g/sysman/config/emkey.ora
KEY=056790FE22685160158605895E3E62FC06D7C153C224D99BAA82236AD677DD962B974B3BDA0A678E9D8278C75662EFEB5A8EB793695A79C131F79B8F8BDBBD03
80955F67D1BFBE675F5E20B9DC6B710A92
$ more /oracle11g/product/11g/oratest_test11g/sysman/config/emkey.ora
KEY=056790FE22685160158605895E3E62FC06D7C153C224D99BAA82236AD677DD962B974B3BDA0A678E9D8278C75662EFEB5A8EB793695A79C131F79B8F8BDBBD03
80955F67D1BFBE675F5E20B9DC6B710A92
都完成之后，执行emctl status dbconsole可以查看状态，emctl start dbconsole和emctl stop dbconsole可以对Database Control Console Process进行启停。缺省端口依然跟10G一样是1158，不过似乎不在支持http，只能用https登陆。我从远程用ie7登陆的时候会警告证书是错误的（linux本地上没有问题），不用管它，继续就可以看到em的登陆界面了，呵呵。
界面看起来挺友好的，具体功能有待日后研究。