How to clear old Oracle VM Manager Configuration(guestvms/storagepools/networks...)(or) drop entire database?

1)stop ovmm

#service ovmm stop
# service ovmm status
Oracle VM Manager is not running...


2)delete database(oracle)
#cd /u01/app/oracle/ovm-manager-3/ovm_upgrade/bin

Database is oracle:-
# sh ovm_upgrade.sh --deletedb --dbsid=XE --dbport=1521 --dbpass=Passw0rd

COMMAND: ovm_upgrade.sh --deletedb --dbsid=XE --dbport=1521 --dbpass=Passw0rd

Using existing transform XSL files
Copying deleted classes files to patch path location
`./deletedClasses.xml' -> `/tmp/ovmpatches/deletedClasses.xml'
 INFO (OvmUpgrade.java:206) Oracle OVM Manager Upgrade Processor
 INFO (OvmUpgrade.java:207)
 INFO (OvmUpgrade.java:488) Upgrade Initialization Starting
 INFO (OdofDirector.java:220) Oracle Distributed Object Fabric (ODOF): Copyright (C) 2007, 2012 Oracle.  All rights reserved.
 INFO (OdofDirector.java:221) ODOF Version: 1.0.0.0
 INFO (OdofDirector.java:222) Initializing...
 INFO (OdofDirector.java:279) Initialization Complete!
 INFO (OvmUpgrade.java:490) Upgrade Initialization Complete
 INFO (WipeDbStage.java:23) Database Wipe Starting
 INFO (ObjectStore.java:613) Wiping Exchange
 INFO (RelationalStore.java:542) Initializing / Clearing Database Tables
 INFO (ObjectStore.java:641) Wiping Complete!
 INFO (WipeDbStage.java:26) Database Wipe Complete

3)start Database

# service ovmm status
Oracle VM Manager is not running...

# service ovmm start
Starting Oracle VM Manager


Now login to ovm manager every thing looks like a new (i.e fresh installation on ovm server)