EM Configuration Failed - Error starting DB

Question

Hi There,
I'm trying to isntall Oracle 10gR2 on Oracle Enterprise Linux 4.8 and, while installing I got the following Error in the Database creation step.
Enterprise manager configuration failed due to the following error-
Error starting Database Control
Refer to the log file at /u01/app/oracle/product/10.2.0/db_1/cfgtoollogs/dbca/demo1/emConfig.log for more details.
You can retry configuring this database with Enterprise Manager later by manually running /u01/app/oracle/product/10.2.0/db_1/bin/emca script.
--------tail Log from the Log file
CONFIG: New Env List: [DISPLAY=:0.0, NEED_EXIT_CODE=1, ORACLE_SID=demo1, PATH=/u01/app/oracle/product/10.2.0/db_1/bin:/usr/bin:/usr/bin:/usr/ccs/bin:/u01/app/oracle/product/10.2.0/db_1/bin:/usr/lib/qt-3.3/bin:/usr/kerberos/bin:/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/home/oracle/bin:/home/oracle/10gR2_db/database/install, TZ=]
Mar 21, 2010 6:26:10 PM oracle.sysman.emcp.util.PlatformInterface executeCommand
CONFIG: Starting execution: /u01/app/oracle/product/10.2.0/db_1/bin/emctl start dbconsole
Mar 21, 2010 6:33:13 PM oracle.sysman.emcp.util.PlatformInterface executeCommand
CONFIG: Exit value of 1
Mar 21, 2010 6:33:13 PM oracle.sysman.emcp.util.PlatformInterface executeCommand
CONFIG: TZ set to US/Central
Oracle Enterprise Manager 10g Database Control Release 10.2.0.1.0
Copyright (c) 1996, 2005 Oracle Corporation. All rights reserved.
http://rhel4.localdomain:1158/em/console/aboutApplication
Starting Oracle Enterprise Manager 10g Database Control ............................................................................................. failed.
Logs are generated in directory /u01/app/oracle/product/10.2.0/db_1/rhel4.localdomain_demo1/sysman/log
Mar 21, 2010 6:33:13 PM oracle.sysman.emcp.util.PlatformInterface executeCommand
WARNING: Error executing /u01/app/oracle/product/10.2.0/db_1/bin/emctl start dbconsole
Mar 21, 2010 6:33:13 PM oracle.sysman.emcp.EMConfig perform
EVERE: Error starting Database Control
Refer to the log file at /u01/app/oracle/product/10.2.0/db_1/cfgtoollogs/dbca/demo1/emConfig.log for more details.
Mar 21, 2010 6:33:13 PM oracle.sysman.emcp.EMConfig perform
CONFIG: Stack Trace:
oracle.sysman.emcp.exception.EMConfigException: Error starting Database Control
at oracle.sysman.emcp.EMDBPostConfig.performConfiguration(EMDBPostConfig.java:565)
at oracle.sysman.emcp.EMDBPostConfig.invoke(EMDBPostConfig.java:177)
at oracle.sysman.emcp.EMDBPostConfig.invoke(EMDBPostConfig.java:146)
at oracle.sysman.emcp.EMConfig.perform(EMConfig.java:155)
at oracle.sysman.assistants.util.em.EMConfiguration.run(EMConfiguration.java:426)
at java.lang.Thread.run(Thread.java:534)
############## Preconfig details ############
1. /etc/hosts
[root@rhel4 ~]# cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
192.168.2.154 rhel4.localdomain rhel4
2. .bash_profile
umask 022
ORACLE_BASE=/u01/app/oracle
ORACLE_HOME=$ORACLE_BASE/product/10.2.0/db_1
ORACLE_SID=demo1
PATH=$ORACLE_HOME/bin:$PATH
export PATH
export ORACLE_BASE ORACLE_HOME ORACLE_SID
3. Required Packages check:
libaio-0.3.105-2
[root@rhel4 ~]# rpm -q binutils gcc gcc-c++ glibc gnome-libs libstdc++ libstdc++-devel make \
pdksh sysstat xscreensaver libaio
binutils-2.15.92.0.2-25
gcc-3.4.6-11.0.1
gcc-c++-3.4.6-11.0.1
glibc-2.3.4-2.43
gnome-libs-1.4.1.2.90-44.2
libstdc++-3.4.6-11.0.1
libstdc++-devel-3.4.6-11.0.1
make-3.80-7.EL4
pdksh-5.2.14-30.6
sysstat-5.0.5-25.el4
xscreensaver-4.18-5.rhel4.14.0.1
libaio-0.3.105-2
4.[root@rhel4 ~]# id oracle
uid=500(oracle) gid=501(oinstall) groups=501(oinstall),502(dba)
I have setup all the steps as specified in the Oracle Site, Oracle-Base site..
Can any one tell me what could be the issue..
Since 1 week I'm trying to resolve this issue but, I couldn't ..

Answer 1

user3890610 wrote:
Hi Andy, I tried as you mentioned but, no luck. Getting same error.
Please some one help me on this.
Thanks,
RahulIt appears you have a working database, but the creation of the dbcontrol failed at installation/creation. I've seen this several times, due to the db not being registered with the listener.
You are going to have to work at a command line. Sorry about that. ;-)
First make sure your listener is up. (lsnrctl status)
Second make sure the database is up (sqlplus / as sysdba)
Next, make sure your db is registered with the listener (lsnrctl status)
When all that is in place, you will need to drop and recreate your dbcontrol, using the 'emca' utility. I don't have the exact syntax at hand, but given what I've told you so far, it shouldn't be too hard to find the details. You may need to drop the SYSMAN user before recreating/reconfiguring the dbcontrol.