Oracle reconstruction EM operation

Oracle re-build EM: The oracle11gx64 on wi7x64 cannot be accessed by IE8, and I re-build EM, but it still cannot. After restarting the OracleDBConsoleorcl service, I can use Firefox to access the address https: // hostname: 1158/em
After the host name or IP address is changed, if the EM (Enterprise Manager, console) cannot be accessed, run the following command www.2cto.com on the system command line to delete an EM Database emca-repos drop and create an EM Database emca-repos create to configure the Database Controlemca-config dbcontrol db. after the ORACLE_SID environment variable is set, alternatively, you can set ORACLE_UNQNAME = ORCL (database instance name) www.2cto.com to view the EM console service status emctl status dbconsole to start EM console service emctl start dbconsole to stop EM console service emctl stop dbconsole