http://blog.csdn.net/haibusuanyun/article/details/16338591

bash-3.2$  lsnrctl status  

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 16-JUL-2017 23:12:16

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                15-JUN-2017 16:11:15
Uptime                    31 days 7 hr. 1 min. 1 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /ptc/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /ptc/oracle/product/11.2.0/dbhome_1/log/diag/tnslsnr/enux-wnc-102/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=enux-wnc-102.ptcts.com)(PORT=1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
  Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "wind" has 2 instance(s).
  Instance "wind", status UNKNOWN, has 1 handler(s) for this service...
  Instance "wind", status READY, has 1 handler(s) for this service...
Service "windXDB" has 1 instance(s).
  Instance "wind", status READY, has 1 handler(s) for this service...
The command completed successfully
bash-3.2$  emca -config dbcontrol db -repos recreate

STARTED EMCA at Jul 16, 2017 11:13:16 PM
EM Configuration Assistant, Version 11.2.0.0.2 Production
Copyright (c) 2003, 2005, Oracle.  All rights reserved.

Enter the following information:
Database SID: wind
Listener port number: 1521
Listener ORACLE_HOME [ /ptc/oracle/product/11.2.0/dbhome_1 ]:
Password for SYS user:  
Password for DBSNMP 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 ................ /ptc/oracle/product/11.2.0/dbhome_1

Local hostname ................ enux-wnc-102.ptcts.com
Listener ORACLE_HOME ................ /ptc/oracle/product/11.2.0/dbhome_1
Listener port number ................ 1521
Database SID ................ wind
Email address for notifications ...............
Outgoing Mail (SMTP) server for notifications ...............

-----------------------------------------------------------------
Do you wish to continue? [yes(Y)/no(N)]: Y
Jul 16, 2017 11:16:27 PM oracle.sysman.emcp.EMConfig perform
INFO: This operation is being logged at /ptc/oracle/cfgtoollogs/emca/wind/emca_2017_07_16_23_13_15.log.
Jul 16, 2017 11:16:29 PM oracle.sysman.emcp.EMReposConfig invoke
INFO: Dropping the EM repository (this may take a while) ...

Jul 16, 2017 11:20:02 PM oracle.sysman.emcp.EMReposConfig invoke
INFO: Repository successfully dropped
Jul 16, 2017 11:20:03 PM oracle.sysman.emcp.EMReposConfig createRepository
INFO: Creating the EM repository (this may take a while) ...





Jul 16, 2017 11:26:38 PM oracle.sysman.emcp.EMReposConfig invoke
INFO: Repository successfully created
Jul 16, 2017 11:26:43 PM oracle.sysman.emcp.EMReposConfig uploadConfigDataToRepository
INFO: Uploading configuration data to EM repository (this may take a while) ...
Jul 16, 2017 11:27:30 PM oracle.sysman.emcp.EMReposConfig invoke
INFO: Uploaded configuration data successfully
Jul 16, 2017 11:27:35 PM oracle.sysman.emcp.util.DBControlUtil configureSoftwareLib
INFO: Software library configured successfully.
Jul 16, 2017 11:27:35 PM oracle.sysman.emcp.EMDBPostConfig configureSoftwareLibrary
INFO: Deploying Provisioning archives ...
Jul 16, 2017 11:28:03 PM oracle.sysman.emcp.EMDBPostConfig configureSoftwareLibrary
INFO: Provisioning archives deployed successfully.
Jul 16, 2017 11:28:03 PM oracle.sysman.emcp.util.DBControlUtil secureDBConsole
INFO: Securing Database Control (this may take a while) ...
Jul 16, 2017 11:28:29 PM oracle.sysman.emcp.util.DBControlUtil secureDBConsole
INFO: Database Control secured successfully.
Jul 16, 2017 11:28:29 PM oracle.sysman.emcp.util.DBControlUtil startOMS
INFO: Starting Database Control (this may take a while) ...
Jul 16, 2017 11:29:07 PM oracle.sysman.emcp.EMDBPostConfig performConfiguration
INFO: Database Control started successfully
Jul 16, 2017 11:29:07 PM oracle.sysman.emcp.EMDBPostConfig performConfiguration
INFO: >>>>>>>>>>> The Database Control URL is https://enux-wnc-102.ptcts.com:5501/em <<<<<<<<<<<
Jul 16, 2017 11:29:10 PM oracle.sysman.emcp.EMDBPostConfig invoke
WARNING:
************************  WARNING  ************************

Management Repository has been placed in secure mode wherein Enterprise Manager data will be encrypted.  The encryption key has been placed in the file: /ptc/oracle/product/11.2.0/dbhome_1/enux-wnc-102.ptcts.com_wind/sysman/config/emkey.ora.   Please ensure this file is backed up as the encrypted data will become unusable if this file is lost.

***********************************************************
Enterprise Manager configuration completed successfully
FINISHED EMCA at Jul 16, 2017 11:29:10 PM
bash-3.2$

bash-3.2$
bash-3.2$ emctl status dbconsole
Oracle Enterprise Manager 11g Database Control Release 11.2.0.1.0
Copyright (c) 1996, 2009 Oracle Corporation.  All rights reserved.
https://enux-wnc-102.ptcts.com:5501/em/console/aboutApplication
Oracle Enterprise Manager 11g is running.
------------------------------------------------------------------
Logs are generated in directory /ptc/oracle/product/11.2.0/dbhome_1/enux-wnc-102.ptcts.com_wind/sysman/log
bash-3.2$ emctl start dbconsole
Oracle Enterprise Manager 11g Database Control Release 11.2.0.1.0
Copyright (c) 1996, 2009 Oracle Corporation.  All rights reserved.
https://enux-wnc-102.ptcts.com:5501/em/console/aboutApplication
 - An instance of Oracle Enterprise Manager 11g Database Control is already running.

Oracle emca on linux