OracleEnterpriseManager(Oracle企业管理器,简称OEM)是通过一组Oracle程序，为管理分布式环境提供了管理服务。OEM包括了一组DBA工具，一个repository，以及一个图形化显示的控制台。OEM控制台与每一个服务器上的智能化**(IntelligentAgent)相对应,oracle11g中OEM默认是关闭的状态，下面步骤如何启动OEM工具。

1.查看OEM状态

[oracle@oracle11g ~]$ emctl status dbconsole

Oracle Enterprise Manager 11g Database Control Release 11.2.0.3.0

Copyright (c) 1996, 2011 Oracle Corporation.  All rights reserved.

Oracle Enterprise Manager 11g is not running.

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

Logs are generated in directory /u01/oracle/product/oracle11g_orcl/sysman/log

2.启动OEM

[oracle@oracle11g ~]$ emctl start dbconsole

Oracle Enterprise Manager 11g Database Control Release 11.2.0.3.0

Copyright (c) 1996, 2011 Oracle Corporation.  All rights reserved.

Starting Oracle Enterprise Manager 11g Database Control ......... started.

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

Logs are generated in directory /u01/oracle/product/oracle11g_orcl/sysman/log

3.启动监听

[oracle@oracle11g ~]$ lsnrctl start

LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 20-MAY-2014 09:42:14

Copyright (c) 1991, 2011, Oracle.  All rights reserved.

Starting /u01/oracle/product/bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 11.2.0.3.0 - Production

System parameter file is /u01/oracle/product/network/admin/listener.ora

Log messages written to /u01/oracle/diag/tnslsnr/oracle11g/listener/alert/log.xml

Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=oracle11g)(PORT=1521)))

Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=oracle11g)(PORT=1521)))

STATUS of the LISTENER

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

Alias                     LISTENER

Version                   TNSLSNR for Linux: Version 11.2.0.3.0 - Production

Start Date                20-MAY-2014 09:42:16

Uptime                    0 days 0 hr. 0 min. 0 sec

Trace Level               off

Security                  ON: Local OS Authentication

SNMP                      OFF

Listener Parameter File   /u01/oracle/product/network/admin/listener.ora

Listener Log File         /u01/oracle/diag/tnslsnr/oracle11g/listener/alert/log.xml

Listening Endpoints Summary...

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=oracle11g)(PORT=1521)))

(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))

The listener supports no services

The command completed successfully

4.访问OEM

用户:sys

密码:password

以sysdba身份进入OEM

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