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Oracle EM的启动与关闭

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1.OEM架构

  1. Management repository：存储要监控的数据库的管理数据及状态信息。
  2. OMS管理服务：监控和管理安装了management agent的数据库，并将获得的管理信息存入management repository。
  3. Oracle HTTP Server：内置的apache服务器。
  4. OC4J/J2EE：符合J2EE标准的应用服务器。
  5. Oracle web cache：用于快速访问web。
  6. Management agent：安装在被管理的数据服务器上，用于监控数据库的运行状态，资源使用，信息变更等，将信息转送到OMS,OMS将这些信息存入repository。

2. 环境与版本

2.1. oem版本

~]$
/u01/app/oracle/middleware/bin/emctl getversion oms

2.2. repository数据库版本

Oracle 12.2.0.1.0

2.3. OMS目录结构

3. 启动

3.1. 启动repository数据库

3.2. 启动OMS服务

~]$
export OMS_HOME=/u01/app/oracle/middleware
/u01/app/oracle/middleware/bin/emctl stop oms -all -force
/u01/app/oracle/middleware/bin/emctl start oms

3.3. 启动agent 服务

~]$
cd /u01/app/oracle/agent/agent_13.3.0.0.0/bin
./emctl start agent

3.4. emctl start OMS启动失败时必须先检查以下事项。

  1. emctl is executed from the correct OMS home

  2. emctl file size is not zero bytes. If it is zero bytes refer Note 1404623.1:How to Recreate the emctl Script for the Enterprise Manager OMS

  3. Repository database and listener are up

  4. SYSMAN connectivity to repository db is successful (Refer Note 1448007.1 How to Verify the Connectivity from 12c OMS to Repository Database using rcuJDBCEngine)

  5. SYSMAN related users acccount status in the repository database is 'open'

SQL>
select username,account_status from dba_users where username like 'SYSMAN%' order by username;

  1. No invalid objects exist for sysman related users (refer Use Case 2 in Note 1683050.1: OMS Failed to Start With Error 'Oracle Management Server is Down. Console may not be up')

  2. Repository database table space is not full (alert log file does not have table space full errors)

  3. Enough space is available for the repository database archive logs

  4. Restart database and listener

参考：MOS:(Doc ID 1495519.1):https://support.oracle.com/epmos/faces/DocumentDisplay?_afrLoop=265055542760121&id=1495519.1&_afrWindowMode=0&_adf.ctrl-state=1d47lvpa65_4

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