Unable to Determine Console Port when Trying to Run emctl start iasconsole

The Situation for me like this, Database version 11.2.0.3, Real Application Cluster two nodes, Enterprise manager working and configured without any problem,

emctl start dbcsonole 

Working without any errors, metrics collected, but when trying to run

emctl start iasconsole

Or

emctl istart iasconsole  

The Error ” Unable to determine console port, default-web-site.xml : no such file or directory”

The File is exists, and configured to run oc4j on port 8888, http://hostname:888/em not working with error “iasconsole service should be stopped”. Weird !!!!!

 Operating system Oracle Linux 64bit, After investigation i discovered that binary/files for oc4j in ORACLE_HOME was corrupted and not working correctly however this is what i did to fix this error :-

First Download OC4J_extend.zip from here, this zip file contain same directory files ( xml,config ) in oc4j ($ORACLE_HOME/oc4j) so extract this file inside this path, if oc4j not exist create one and extract the zip file into this directory.

But this is will not make oc4j works, complete the below steps to make sure everything is working fine.

[oracle@PROD bin]$ ./java -jar /u01/app/oraclenew/product/11.2.0/dbhome_1/oc4j/j2ee/home/oc4j.jar

Apr 3, 2014 2:51:51 PM com.evermind.server.XMLApplicationServerConfig randomizeJtaAdminPassword
INFO: Updating JtaAdmin account

14/04/03 14:52:30 Set OC4J administrator’s password (password text will not be displayed as it is entered)
Enter password:            
Confirm password:          
The password for OC4J administrator “oc4jadmin” has been set.
14/04/03 14:52:35 The OC4J administrator “oc4jadmin” account is activated.
14/04/03 14:52:39 Oracle Containers for J2EE 10g (10.1.3.3.0)  initialized

Now Test the Link –> Http://localhost:8888/em and it’s working
Thank you 
Osama Mustafa

Enable Enterprise Express for Database 12c

Oracle Database 12c comes with new feature called Enterprise manager 12c express, this new enterprise manager control Database 12c using GUI , manager storage , performance , user, roles, accounts and others new features added , No command to start or shutdown EM 12c express by default when you start/shutdown database it will be up/down.

  • export ORACLE_SID
  • Make sure listener is up and database is registered.

sqlplus / as sysdba
SQL> show parameter dispatcher ;
NAME     TYPE VALUE
———————————— ———– ——————————
dispatchers     string (PROTOCOL=TCP) (SERVICE=db12cX
DB)

  • Configure HTTP PORT 

SQL> exec DBMS_XDB_CONFIG.setHTTPPort (8080);

Check the below pictures that describe EM Express :

DBMS_XDB.setHTTPPort is deprecated

Thank you
Osama mustafa