POM init module error:515175

Loaded the rich client 2 tier. was working well till yesterday, today is giving this problem. the error is as follows:
====================================================
Failed to handle error condition correctly – exiting
POM init module gives error 515175
====================================================
====================
Fatal error detected
====================
ImR: Timeout waiting for to start.
ImR: not running. alive=false.
ImR: Cannot Activate .
Cannot activate server, reason:

SOLUTION 1:
The oracle listner was creating the problem, the database wasn’t mounted. the solution is to start the command prompt and run the following commands:
C:\Documents and Settings\bharat>sqlplus
SQL*Plus: Release 10.2.0.1.0 – Production on Tue Sep 14 09:59:26 2010
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Enter user-name: sys as sysdba
Enter password:
Connected to an idle instance.
SQL> shutdown immediate
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
SQL> startup
ORACLE instance started.
Total System Global Area 1283457024 bytes
Fixed Size 1250620 bytes
Variable Size 327158468 bytes
Database Buffers 947912704 bytes
Redo Buffers 7135232 bytes
Database mounted.
Database opened.

SOLUTION 2: 
1) open command prompt
2) type “sqlplus” and hit enter
3) enter username and password to login into the database
4) type “alter user username identified by password” and hit enter
5) type “exit”
Now try logging into teamcenter ….It will work
If you have any problem with the listener :
I suggest you to do the following to diagnose the problem.

1. cmd
2. lsnrctl
3. start

This worked and I saw the following error which showed my Oracle install had not been properly done, the listener was pointing to the wrong server.

LSNRCTL> start
System parameter file is
  C:\oracle\product\10.2.0\db_1\network\admin\listener.ora
Error listening on:
  (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=bad.betweengo.com)(PORT=1521)))
TNS-12545: Connect failed because target host or object does not exist
 TNS-12560: TNS:protocol adapter error
  TNS-00515: Connect failed because target host or object does not exist
    32-bit Windows Error: 1004: Unknown error

In C:\oracle\product\10.2.0\db_1\network\admin\listener.ora the listener is improperly configured for bad.betweengo.com.

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = bad.betweengo.com)(PORT = 1521))
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
    )
  )

I ran Oracle’s Net Configuration Assistant and updated the Listener configuration which fixed the above listener to point to my server. Now C:\oracle\product\10.2.0\db_1\network\admin\listener.ora points correctly to good.betweengo.com.

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = good.betweengo.com)(PORT = 1521))
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
    )
  )

OR

     LISTENER =
      (DESCRIPTION_LIST =
         (DESCRIPTION =
             (ADDRESS = (PROTOCOL = TCP)(HOST = sktestserver)(PORT = 1521))
             (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
         )
       )