Oracledbconsoleorcl cannot be started _ solution to error code 2 run cmd as Administrator Enter command mode input: emctl start dbconsole www.2cto.com prompt: Environment Variable oracle_sid not defined. please define it. enter set oracle_sid = orcl again (orcl is my Instance name and service name, and there is no space around the equal sign). At this time, no error is prompted. Continue to enter: emctl start dbconsole prompt: enter the configuration file. d: \ oracle \ product \ 10.2.0 \ db_1/Solaris/J2EE/oc4j_dbconsole_172.16.130.55_orcl not found. (Not found file names may be different, which is related to your Oracle installation path. The IP address is your current Www.2cto.com and then open the D: \ oracle \ product \ 10.2.0 \ db_1 folder, copy the 127.0.0.1 _ orcl folder (this IP address is the IP address when you install Oracle) rename it oc4j_dbconsole_172.16.130.55_orcl and open the D: \ oracle \ product \ 10.2.0 \ db_1 \ Solaris \ J2EE folder. Find the oc4j_dbconsole_127.0.0.20.orcl folder and copy it to the oc4j_dbconso. In this case, enter emctl start dbconsole in the Command window, and the error will not be prompted. After the service is started, the above information can be sorted online. I personally think it is not possible to start the service, it is mainly because the IP address has changed from: http://www.2cto.com/database/201208/150086.html