Case confusion - two dbcontrol config directories for one database

Oracle 11.2.0.2 SE-One 64-bit
Oracle ASM 11.2.0.2 64-bit
Oracle Linux 5.6 x86-64
Stand alone server, no cluster, no RAC
Configured a new dbcontrol for subject database. Everything seems to be functioning correctly but it created two config directories
oracle:mydb$ cd $ORACLE_HOME
2013-09-12 14:21:50
oracle:mydb$ ls -l myserver*
myserver.mycompany.org_mydb:                        -------- note the dbname is lower case and directory is sparse
total 4
drwxr----- 3 oracle oinstall 4096 Sep 12 14:13 sysman
myserver.mycompany.org_MYDB:                        -------- note the dbname is upper case and directory is fully populated
total 12
-rw-r----- 1 oracle oinstall    6 Sep 12 14:13 emctl.pid
-rw-r--r-- 1 oracle oinstall   56 Sep 12 14:13 oraInst.loc
drwxr----- 7 oracle oinstall 4096 Sep 12 14:13 sysman
And in the j2ee directory we get this. Note the dbname is in upper case
oracle:mydb$ cd oc4j/j2ee
2013-09-12 14:26:49
oracle:mydb$ ll
total 36
-rw-r--r-- 1 oracle oinstall 1012 Apr 5 08:56 deploy_db_wf.ini
drwxr-xr-x 14 oracle oinstall 4096 Apr 5 08:53 home
drwxr-xr-x 3 oracle oinstall 4096 Apr 5 08:51 oc4j_applications
drwxr-x--- 6 oracle oinstall 4096 Apr 5 08:51 OC4J_DBConsole
drwxr-xr-x 10 oracle oinstall 4096 Sep 12 14:13 OC4J_DBConsole_myserver.mycompany.org_MYDB
drwxr-xr-x 5 oracle oinstall 4096 Apr 5 08:51 OC4J_Workflow_Component_Container
drwxr-xr-x 5 oracle oinstall 4096 Apr 5 08:51 OC4J_Workflow_Management_Container
drwxr-xr-x 2 oracle oinstall 4096 Apr 5 08:53 utilities
What the database tells us about itself:
SQL> select name from v$database;
NAME
MYDB
SQL> select instance_name from v$instance;
INSTANCE_NAME
mydb
SQL> select name,
2         value
3 from v$parameter
4 where name in ('db_name',
5                 'db_unique_name',
6                 'instance_name',
7                 'service_names',
8                 'global_names'
9                 )
10 order by name;
NAME                 VALUE
db_name              MYDB
db_unique_name       MYDB
global_names         FALSE
instance_name        mydb
service_names        MYDB
And the environment from which I ran emca:
oracle:mydb$ env |grep ORA|sort
ORACLE_BASE=/u01/app/oracle
ORACLE_HOME=/u01/app/oracle/product/11.2.0.2/dbhome_1
ORACLE_SID=mydb
The mis-matched cases stem from my predecessor deciding he didn't like database names in lower case, so started changing in mid-stream. I'm not sure exactly what he did or how he did it. But that aside, the results of creating a new dbcontrol (getting two directories for the same database) still puzzling. I started by dropping the original (emca -deconfig dbcontrol db -repos drop), which dropped the upper-case version of the directories, but left the lower-case version. I then deleted that manually before running emca to configure a new dbcontrol, but still ended up with both versions.
Ideas?

The ORACLE_HOME may have been set twice with differents values in it (i.e. extra slash) before starting twice the same db.
Please, have a look to this article from Ivan Kartik :
http://ivan.kartik.sk/index.php?show_article=40
And depending of your OS, you could check what ORACLE_HOME is used for each process :
How to Check the Environment Variables for an Oracle Process*
Doc ID: 373303.1*
Nicolas.
added the metalink note ref.
Edited by: N. Gasparotto on Sep 4, 2009 11:34 AM

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The ORACLE_HOME may have been set twice with differents values in it (i.e. extra slash) before starting twice the same db.
Please, have a look to this article from Ivan Kartik :
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Steve Lewis wrote:
>
We're in development/eval for 7.0 Portal right now, and every time we sync
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exception. Is there a way to have multiple people hitting one database?
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