emctl status omsThe following exception occurred: java.net.UnknownHostException: orcl.mydb.cn: orcl.hnemic.cn	at java.net.InetAddress.getAllByName0(InetAddress.java:1146)	at java.net.InetAddress.getAllByName(InetAddress.java:1073)	at java.net.InetAddress.getAllByName(InetAddress.java:1009)	at java.net.InetAddress.getByName(InetAddress.java:959)	at oracle.sysman.emd.targetIntg.agent.AgentTargetInstaller.getLocalHost(AgentTargetInstaller.java:4289)	at oracle.sysman.emd.targetIntg.agent.AgentTargetInstaller.printLocalHost(AgentTargetInstaller.java:4252)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:592)	at oracle.sysman.emd.targetIntg.Util$DefaultIntegrationMethod.execute(Util.java:598)	at oracle.sysman.emd.targetIntg.TargetInstaller.execute_(TargetInstaller.java:167)	at oracle.sysman.emd.targetIntg.TargetInstaller.execute(TargetInstaller.java:155)	at oracle.sysman.emSDK.conf.TargetInstaller.printLocalHost(TargetInstaller.java:2364)	at oracle.sysman.emSDK.conf.TargetInstaller.main(TargetInstaller.java:3290)Although there was an exception it might be possible for the program to continue.EM Configuration issue. /oracle/app/oracle/11g/orcl.mydb.cn_orcl not found. 

emctl status omsEM Configuration issue. /oracle/app/oracle/11g/orcl.mydb.cn_orcl not found. 

cd $AGENT_HOMEemctl status oms

Oracle Enterprise Manager Cloud Control 12c Release 3  Copyright (c) 1996, 2013 Oracle Corporation.  All rights reserved.WebTier is UpOracle Management Server is not functioning because of the following reason:Failed to connect to repository database. OMS will be automatically restarted once it identifies that database and listener are up.Check EM Server log file for details: /oracle/app/gc_inst/user_projects/domains/GCDomain/servers/EMGC_OMS1/logs/EMGC_OMS1.out

$ lsnrctl statusLSNRCTL for Linux: Version 11.2.0.3.0 - Production on 26-NOV-2014 13:32:54Copyright (c) 1991, 2011, Oracle.  All rights reserved.Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))TNS-12541: TNS:no listener TNS-12560: TNS:protocol adapter error  TNS-00511: No listener   Linux Error: 111: Connection refusedConnecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=oem.mydb.cn)(PORT=1521)))TNS-12541: TNS:no listener TNS-12560: TNS:protocol adapter error  TNS-00511: No listener   Linux Error: 111: Connection refused[oracle@oem bin]$ lsnrctl startLSNRCTL for Linux: Version 11.2.0.3.0 - Production on 26-NOV-2014 13:32:59Copyright (c) 1991, 2011, Oracle.  All rights reserved.Starting /oracle/app/oracle/11g/bin/tnslsnr: please wait...TNSLSNR for Linux: Version 11.2.0.3.0 - ProductionSystem parameter file is /oracle/app/oracle/11g/network/admin/listener.oraLog messages written to /oracle/app/oracle/diag/tnslsnr/oem/listener/alert/log.xmlListening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=oem.hnemic.cn)(PORT=1521)))Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))STATUS of the LISTENER------------------------Alias                     LISTENERVersion                   TNSLSNR for Linux: Version 11.2.0.3.0 - ProductionStart Date                26-NOV-2014 13:33:01Uptime                    0 days 0 hr. 0 min. 0 secTrace Level               offSecurity                  ON: Local OS AuthenticationSNMP                      OFFListener Parameter File   /oracle/app/oracle/11g/network/admin/listener.oraListener Log File         /oracle/app/oracle/diag/tnslsnr/oem/listener/alert/log.xmlListening Endpoints Summary...  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=oem.mydb.cn)(PORT=1521)))The listener supports no servicesThe command completed successfully