配置oracle11g EM db control

原文地址：配置oracle11g EM dbcontrol作者：蘭博wk

oracle從10g以來一直大力推薦dba通過EM來進行管理，不管個人的喜好如何，都不能否認EM還是具有很強的易用性的。

  前陣子裝好了11g後，發現oracle11g文檔很多快速管理指南的內容都是通過EM來進行的，但我在文檔上並沒找到EM的安裝說明，於是試着通過10g的說明來對其進行配置。

  從安裝軟件上看，我並沒找到gridcontrol部分，不知道是不是還沒有推出，下面簡單描述一下db control的配置過程以及遇到的幾個問題。

 跟10g的方法相仿，oracle11g也可以通過EMCA來配置dbcontrol（在裝數據庫時候用dbca可以同時創建em）

 登陸oracle用戶，執行emca-h命令後可以看到emca的各種配置參數及選項，具體參數的說明可以參考10g中的說明（可在Introduction toEnterprise Manager Advanced Configuration中找到）。執行emca -configdbcontrol db -reposcreate，按提示輸入一些配置後，創建過程開始，可惜建到一半後，SYSAUX空間不足，報錯退出了。看來自10G以後SYSAUX空間的要求越來越大了，這裏要注意，不光是sysaux表空間，system表空間也要有足夠的空閒。

  擴展表空間後執行emca -config dbcontrol db -reposrecreate準備重新開始創建，結果剛一開始就報錯退出了，竟然是報沒有tns監聽，lsnrctlstatus檢查監聽是啓的，用配置的tnsnames連接數據庫也能連上，想了很久後懷疑跟監聽沒有采用動態註冊方式有關，可按道理在一些缺省條件達成的情況的下，動態註冊是自動生效的。lsnrctlstatus命令再看了一下，動態註冊果然沒有啓動，沒辦法只能試試強制指定了，tnsnames裏增加

listener1=
  (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=oratest)(PORT=1521))
   )

並指定local_listener＝listener1後，動態註冊立即生效了。至於爲啥，我不知道，新特性還是bug？以後再說吧（10G沒怎麼玩過，不知道有沒這個問題）

重新執行emca -config dbcontrol db -reposrecreate，成功，開始drop以前的配置了，之後一切順利，執行過程及結果消息如下：

$ 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 rightsreserved.

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):
-----------------------------------------------------------------

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 ...............

-----------------------------------------------------------------
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.EMReposConfiginvoke
INFO: Dropping the EM repository (this may take a while) ...
Aug 29, 2007 8:50:26 AM oracle.sysman.emcp.EMReposConfiginvoke
INFO: Repository successfully dropped
Aug 29, 2007 8:50:28 AM oracle.sysman.emcp.EMReposConfigcreateRepository
INFO: Creating the EM repository (this may take a while) ...
Aug 29, 2007 9:16:21 AM oracle.sysman.emcp.EMReposConfiginvoke
INFO: Repository successfully created
Aug 29, 2007 9:17:05 AM oracle.sysman.emcp.EMReposConfiguploadConfigDataToRepository
INFO: Uploading configuration data to EM repository (this may takea while) ...
Aug 29, 2007 9:20:57 AM oracle.sysman.emcp.EMReposConfiginvoke
INFO: Uploaded configuration data successfully
Aug 29, 2007 9:21:22 AM oracle.sysman.emcp.util.DBControlUtilconfigureSoftwareLib
INFO: Software library configured successfully.
Aug 29, 2007 9:21:22 AM oracle.sysman.emcp.EMDBPostConfigconfigureSoftwareLibrary
INFO: Deploying Provisioning archives ...
Aug 29, 2007 9:26:27 AM oracle.sysman.emcp.EMDBPostConfigconfigureSoftwareLibrary
INFO: Provisioning archives deployed successfully.
Aug 29, 2007 9:26:27 AM oracle.sysman.emcp.util.DBControlUtilsecureDBConsole
INFO: Securing Database Control (this may take a while) ...
Aug 29, 2007 9:27:34 AM oracle.sysman.emcp.util.DBControlUtilsecureDBConsole
INFO: Database Control secured successfully.
Aug 29, 2007 9:27:34 AM oracle.sysman.emcp.util.DBControlUtilstartOMS
INFO: Starting Database Control (this may take a while) ...
Aug 29, 2007 9:36:05 AM oracle.sysman.emcp.EMDBPostConfigperformConfiguration
INFO: Database Control started successfully
Aug 29, 2007 9:36:08 AM oracle.sysman.emcp.EMDBPostConfigperformConfiguration
INFO:>>>>>>>>>>>The Database Control URL is https://oratest:1158/em<<<<<<<<<<<
Aug 29, 2007 9:37:50 AM oracle.sysman.emcp.EMDBPostConfiginvoke
WARNING:
************************ WARNING  ************************

Management Repository has been placed in secure mode whereinEnterprise Manager data will be encrypted.  Theencryption 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 willbecome unusable if this file is lost.

***********************************************************
Enterprise Manager configuration completed successfully
FINISHED EMCA at Aug 29, 2007 9:37:51 AM

  emkey.ora是密鑰的所在地所以如果在生成系統上還是需要備份好的。
$ more/oracle11g/product/11g/oratest_test11g/sysman/config/emkey.ora
KEY=056790FE22685160158605895E3E62FC06D7C153C224D99BAA82236AD677DD962B974B3BDA0A678E9D8278C75662EFEB5A8EB793695A79C131F79B8F8BDBBD03
80955F67D1BFBE675F5E20B9DC6B710A92

都完成之後，執行emctl status dbconsole可以查看狀態，emctl startdbconsole和emctl stop dbconsole可以對Database Control ConsoleProcess進行啓停。缺省端口依然跟10G一樣是1158，不過似乎不在支持http，只能用https登陸。我從遠程用ie7登陸的時候會警告證書是錯誤的（linux本地上沒有問題），不用管它，繼續就可以看到em的登陸界面了，呵呵。

 界面看起來挺友好的，具體功能有待日後研究。