Cant start listener or DB Console on fresh Windows install.

Question

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Greetings Oracle Guru's. I installed 11g on Windows the other day, and a couple days later have service problems with the Listener and DB Console services.
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Listener: the oracleoradb11g_home1tnslistener service on local computer started and then stopped.... bla bla bla
DB Console: Windows could not start the OracleDBConsoleOrcl on the Local Computer.... bla bla bla
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There is nothing worth mentioning in the Event Viewer. I see lots of similar things on Google, but nothing quite precise. I've also seen things like drop/ recreate the service, but Im not understanding why I wont run into this issue again?
In addition to this, it seems to me like I experienced the same thing when using 10g, and I needed to add the Enterprise Mgr address to the Hosts file to resolve the issue. However, I've done that now and it didn't help. I've also seen this in the Oracle Log:
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-------------- [OracleDBConsoleorcl] ------------
EMDROOT=C:\app\Administrator\product\11.1.0\db_1
ORACLE_HOME=C:\app\Administrator\product\11.1.0\db_1
EMSTATE=C:\app\Administrator\product\11.1.0\db_1\10.18.0.5_orcl
CONSOLE_CFG=dbconsole
TRACE_LEVEL=16
TIMEOUT=30
11/07/08 10:53:11 Job Process API is available
11/07/08 10:53:11 Start pending...
11/07/08 10:53:11 Verifying dbconsole is not started already. Command line "C:\app\Administrator\product\11.1.0\db_1\bin\emctl.bat" istatus dbconsole
11/07/08 10:53:11 Service Job object queried for basic limit information
11/07/08 10:53:11 Service Job object set with JOB_OBJECT_LIMIT_BREAKAWAY_OK limit
11/07/08 10:53:12 dbconsole launch commandline is "aemctl.bat" istart dbconsole
11/07/08 10:53:12 Tracking process launch...
11/07/08 10:53:42 dbconsole exited with retCode 2.
11/07/08 10:53:42 Check C:\app\Administrator\product\11.1.0\db_1\sysman\log\OracleDBConsoleorcl.nohup for details
But I dont have a OracleDBConsoleorcl.nohup file in the referenced folder. As a good precaution, I also tried starting Enterprise Mgr from the DOS prompt (emctl.bat) and it mentioned not having my Oracle_SID defined. However, I browsed the registy and that is simply not correct, it is set as expected.
As you see, I've done quite a bit before posting here in an effort to provde as much information as possible.
Any ideas?
TIA, ChrisR
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Edited by: ChrisRDBA on Nov 7, 2008 2:53 PM

Answer 1

All of this was in fact related to the IP address changing (still not sure why a modified HOSTS file didn't fix?).
As a test, I removed "use DHCP" and hard coded my network connection back to the address it was when I first installed. While I did in fact lose internet connectivity, EM and the Listener could then fire up.
Obviously this won't be my permanent solution, but I wanted to post back for others with these issues.