GC:grid control
CC:cloud control(12开始就不叫GC了改叫CC了，目前有12CC、13CC)
OMR
Oracle Management Repository
OMR就是存放GC监控信息的数据库，一般存放在sysman用户下的表，因为要用到监控报警，所以要用到dbsnmp用户，所以要开启sysman、dbsnmp两个用户
/etc/hsots必须有OMR和OMS的信息
OMS
Oracle Management Service
OMS简单可以简单理解为GC监控，安装了weblogic和grid control软件，其中在安装grid contro过程中要指定OMR服务器的信息。
OMS安装好后，自动在本机安装了OMA服务
/etc/hsots必须有OMR和OMS的信息
/etc/oratab信息默认如下（分别是OMS、OMA的HOME目录，可以修改*为oms和agent）
*:/u01/app/bea/oracle/Middleware/oms11g:N
*:/u01/app/bea/oracle/Middleware/agent11g:N
OMA
Oracle Management Agent
被监控的服务器，/etc/hosts必须要有OMS的域名信息
一般一台服务器装一套OMA就可以了，但是如果有不同的OMS的来监控服务器，比如13c，12c同时监控同一台服务器，则这台服务器需要两套OMA，且版本应该不一样。
安装OMA的方法
1、登录OMS服务器
. oraenv -> oms
cd $ORACLE_HOME/sysman/agent_download/11.1.0.1.0//
copy agentDownload.linux到OMA服务器比如/home/oracle
2、登录OMA服务器
./agentDownload.linux -b /u01/app/oracle/product/11.2.0 -y --安装好后，默认连接OMS的4900端口
-y表示Decline Security Updates，表示不需要输入邮箱地址
3、安装好后，/etc/oratab默认有如下信息
agent:/u01/app/oracle/product/11.2.0/agent11g:N（即第二步-b时指定的HOME目录加agent11g子目录，可以修改*为agent）
OMA安装过程中一定要注意：输入正确的registration password，否则虽然可以正常安装agent，但是永远连不上OMS
OMS的启动关闭
emctl start oms
emctl stop oms
emctl status oms
emctl status oms -details
emctl status oms -details -sysman_pwd sysman'spassword
OMA的启动关闭
emctl start agent
emctl stop agent
emctl status agent
OMA连不上OMS的现象和处理方法
1、如果安装agent过程中输错了密码，连不上OMS，则如下
emctl upload agent
emctl verifykey
emctl secure agent
比如
EMD pingOMS error: Failure connecting to https://gc.oracle.com:4900/em/upload/ , err -1
2、如果重新在其他目录安装了agent，连不上OMS，则如下查看什么报错
emctl upload agent
emctl verifykey
比如
EMD pingOMS error: Invalid ping response "ERROR-Agent is blocked... Please contact EM adminstrator to unblock the agent"
则进入em界面，setup->agent->unblock
3、最后都不行的话重启OMS，再如上1、2两种方式
OMA\OMS日志目录
OMS日志在gc_inst运行时的目录里，即$INST_HOME/em/EMGC_OMS1/sysman/log
OMS:/u01/app/bea/oracle/gc_inst/em/EMGC_OMS1/sysman/log
agent日志$AGENT_HOME/sysman/log
OMA:/u01/app/bea/oracle/Middleware/agent11g/sysman/log
[oracle@oms linux_x64]$ . oraenv
ORACLE_SID = [oms] ? agent
-bash: [: too many arguments
The Oracle base for ORACLE_HOME=/u01/app/bea/oracle/Middleware/agent11g is
XPointer evaluation failed: no locset
[oracle@oms linux_x64]$ emctl status agent
Oracle Enterprise Manager 11g Release 1 Grid Control 11.1.0.1.0
Copyright (c) 1996, 2010 Oracle Corporation. All rights reserved.
---------------------------------------------------------------
Agent Version : 11.1.0.1.0
OMS Version : 11.1.0.1.0
Protocol Version : 11.1.0.0.0
Agent Home : /u01/app/bea/oracle/Middleware/agent11g
Agent binaries : /u01/app/bea/oracle/Middleware/agent11g
Agent Process ID : 3271
Parent Process ID : 3250
Agent URL : https://oms.oracle.com:3872/emd/main/
Repository URL : https://oms.oracle.com:4900/em/upload
Started at : 2017-06-18 01:36:17
Started by user : oracle
Last Reload : 2017-06-18 01:36:17
Last successful upload : 2017-06-18 02:14:43
Total Megabytes of XML files uploaded so far : 5.20
Number of XML files pending upload : 0
Size of XML files pending upload(MB) : 0.00
Available disk space on upload filesystem : 57.63%
Last successful heartbeat to OMS : 2017-06-18 02:17:31
---------------------------------------------------------------
Agent is Running and Ready
[oracle@gc linux]$ . oraenv
ORACLE_SID = [emrep] ? oms
-bash: [: too many arguments
The Oracle base has been set to
XPointer evaluation failed: no locset
[oracle@gc linux]$ emctl status oms
Oracle Enterprise Manager 11g Release 1 Grid Control
Copyright (c) 1996, 2010 Oracle Corporation. All rights reserved.
WebTier is Up
Oracle Management Server is Up
[oracle@gc linux]$ emctl status oms -details
Oracle Enterprise Manager 11g Release 1 Grid Control
Copyright (c) 1996, 2010 Oracle Corporation. All rights reserved.
Enter Enterprise Manager Root (SYSMAN) Password :
Console Server Host : gc.oracle.com
HTTP Console Port : 7788
HTTPS Console Port : 7799
HTTP Upload Port : 4889
HTTPS Upload Port : 4900
OMS is not configured with SLB or virtual hostname
Agent Upload is locked.
OMS Console is locked.
Active CA ID: 1
[oracle@gc linux]$ emctl status oms -details -sysman_pwd welcome1
Oracle Enterprise Manager 11g Release 1 Grid Control
Copyright (c) 1996, 2010 Oracle Corporation. All rights reserved.
Console Server Host : gc.oracle.com
HTTP Console Port : 7788
HTTPS Console Port : 7799
HTTP Upload Port : 4889
HTTPS Upload Port : 4900
OMS is not configured with SLB or virtual hostname
Agent Upload is locked.
OMS Console is locked.
Active CA ID: 1
