EM12C 安装及卸载 注意点整理

版本号：  em12c 12.1.0.4          OS :  redhat 5.7 x86_64bit （CentOS6.2,測试过，当时因glibc*.i686包安装一直报错。所以放弃了）

==>  em12c 安装。就不说了。网上一大把，或者查看官方文档：

==>这里涉及一些參数配置：

Check the CBO stats gathering job	Disable the stats gathering job

  1.Check the processes instance parameter value
  The processes instance parameter needs to be set to at least 300.

  2.Check the session_cached_cursors instance parameter value.
  The session_cached_cursors instance parameter should be set to 300.
  Any value between 200 and 500, inclusive, will be accepted.

 3.Check the job_queue_processes instance parameter value.
   The job_queue_processes instance parameter should be set to 20.

 4.Check the shared_pool_size instance parameter value.
   The shared_pool_size instance parameter should be set to
   at least 600 megabytes or roughly one third of the sga_target size.

 5. Check the redo log size.
    The size of the EM database instance should be 300 megabytes or greater.
    Generally, there should be 3 or more redo logs available of this size.

 6. Ensure that the EM tablespace has at least one datafile set to autoextensible
    Add at least one datafile with the autoextend attribute to the EM tablespace

 7.Check the open_cursors instance parameter value.
   The open_cursors instance parameter should be set between 300 and 400, inclusive.

 8.Check the sga_target instance parameter value.
   The sga_target instance parameter should be set to at least 2 gigabytes, and
   roughly twice the size of the pga_aggregate_target setting.

 9.Check for invalid objects in the EM repository
   Compile all invalid objects in the EM repository

==> 假设之前你的db 安装了EM 的话。那么这条命令能够帮助你：

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[oracle@em12c
~]$ emca -deconfig dbcontrol db -repos drop -SYS_PWD password -SYSMAN_PWD  password

STARTED
EMCA at Jul 24, 2014 10:13:13 AM

EM
Configuration Assistant, Version 11.2.0.3.0 Production

Copyright
(c) 2003, 2011, Oracle. All rights reserved.

Enter
the following information:

Database
SID: em12c

Listener
port number: 1521

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

WARNING
: While repository is dropped the database will be put in quiesce mode.

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

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

Jul
24, 2014 10:13:22 AM oracle.sysman.emcp.EMConfig perform

INFO:
This operation is being logged at /dba/app/oracle/cfgtoollogs/emca/em12c/emca_2014_07_24_10_13_12.log.

Jul
24, 2014 10:13:23 AM oracle.sysman.emcp.util.DBControlUtil stopOMS

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

Jul
24, 2014 10:13:46 AM oracle.sysman.emcp.EMReposConfig invoke

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

Jul
24, 2014 10:15:57 AM oracle.sysman.emcp.EMReposConfig invoke

INFO:
Repository successfully dropped

Enterprise
Manager configuration completed successfully

FINISHED
EMCA at Jul 24, 2014 10:16:00 AM

被监控server，上关于sudo命令的设置：

---/usr/local/etc/sudoers

#

## Allow root to run any commands anywhere

root        ALL=(ALL)           ALL

oracle     ALL=(ALL)           ALL      -->加入一行

#Defaults        requiretty                        -->凝视掉

Defaults:oracle     !requiretty                 -->加入oracle

#

# Refuse to run if unable to disable echo on the tty. This setting should also be

# changed in order to be able to use sudo without a tty. See requiretty above.

#

#Defaults     !visiblepw                           -->凝视掉

Defaults     visiblepw                              -->加入

==>被监控server，agent 卸载。事实上EM12C 主server，卸载方式相同，涉及sysman,sysaux 下的一些表空间记得清楚）

（一）卸载插件

eg：

[oracle@dominic4 plugins]$ pwd 

/em12c/plugins

[oracle@dominic4 plugins]$
ls 

oracle.em.savf.discovery.plugin_12.1.0.2.0

oracle.sysman.emas.discovery.plugin_12.1.0.6.0 

oracle.em.soav.discovery.plugin_12.1.0.4.0 

oracle.sysman.oh.agent.plugin_12.1.0.4.0 

oracle.sysman.db.agent.plugin_12.1.0.6.0 

oracle.sysman.oh.discovery.plugin_12.1.0.4.0 

oracle.sysman.db.discovery.plugin_12.1.0.6.0  

oracle.sysman.xa.discovery.plugin_12.1.0.6.0

[oracle@dominic4 ~]$ /em12c/core/12.1.0.4.0/oui/bin/runInstaller -deinstall -silent
"REMOVE_HOMES={/em12c/plugins/oracle.sysman.xa.discovery.plugin_12.1.0.6.0,/em12c/plugins/oracle.sysman.db.discovery.plugin_12.1.0.6.0,/em12c/plugins/oracle.sysman.db.agent.plugin_12.1.0.6.0}" -removeALLFiles -invPtrLoc /etc/oraInst.loc

----plugins 下的全部 oracle.* 都须要删除。

（二） 卸载sbin

[oracle@dominic4 ~]$ /em12c/core/12.1.0.4.0/oui/bin/runInstaller -deinstall -silent
"REMOVE_HOMES={/em12c/sbin}" -removeALLFiles -invPtrLoc /etc/oraInst.loc 

Starting Oracle Universal Installer... 



Checking swap space: must be greater than 500 MB. Actual 3498 MB Passed 

Preparing to launch Oracle Universal Installer from /tmp/OraInstall2014-08-11_11-59-57AM. Please wait ...[oracle@dominic4 ~]$ Oracle Universal Installer, Version
11.1.0.12.0 Production 

Copyright (C) 1999, 2014, Oracle. All rights reserved. 



Starting deinstall 





Deinstall in progress (Monday, August 11, 2014 12:00:01 PM CST) 

............................................................... 100% Done. 



Deinstall successful 



End of install phases.(Monday, August 11, 2014 12:00:02 PM CST) 

End of deinstallations 

Please check '/dba/app/oraInventory/logs/silentInstall2014-08-11_11-59-57AM.log' for more details.

( 三）卸载 agent home 

[oracle@dominic4 ~]$ /em12c/core/12.1.0.4.0/oui/bin/runInstaller -deinstall -silent
"REMOVE_HOMES={/em12c/core/12.1.0.4.0}" -removeALLFiles -invPtrLoc /etc/oraInst.loc 

Starting Oracle Universal Installer... 



Checking swap space: must be greater than 500 MB. Actual 3498 MB Passed 

Preparing to launch Oracle Universal Installer from /tmp/OraInstall2014-08-11_12-03-20PM. Please wait ...[oracle@dominic4 ~]$ Oracle Universal Installer, Version
11.1.0.12.0 Production 

Copyright (C) 1999, 2014, Oracle. All rights reserved. 



Starting deinstall 





Deinstall in progress (Monday, August 11, 2014 12:03:23 PM CST) 

Configuration assistant "Agent Deinstall Assistant" succeeded 

............................................................... 100% Done. 



Deinstall successful

End of install phases.(Monday, August 11, 2014 12:04:18 PM CST)

End of deinstallations

Please check '/dba/app/oraInventory/logs/silentInstall2014-08-11_12-03-20PM.log' for more details.

 

（四） 删除文件夹

rm -rf   /em12c/*  

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