what order backup and restore rhev-m config and database?

1. backup config files

/etc/jbossas/jbossas.conf

/etc/rhevm/

/etc/yum/pluginconf.d/versionlock.list

/etc/pki/rhevm/

/etc/jbossas/rhevm-slimmed/

/usr/share/rhevm/kerberos/krb5.conf

/usr/share/rhevm/rhevm.ear/rhevmanager.war/ExternalConfig.txt

/usr/share/rhevm/rhevm.ear/rhevmanager.war/ServerParameters.js

/root/.pgpass

/root/.rnd

2. backup rhev-m db

pg_dump -C -E UTF8 --column-inserts --disable-dollar-quoting --disable-triggers -U postgres --format=p -f dump_RHEVDB_BACKUP.sql rhevm

3. on new host install rhev-m

yum install rhevm

service jbossas stop

4. restore backup db

psql -U postgres -d rhevm -W -f dump_RHEVDB_BACKUP.sql

5. restore config files
6. service jbossas start

But rhev-m not work.

Log file /var/log/rhevm/rhevm.log:

[org.ovirt.engine.core.bll.Backend] (main) Error in getting DB connection. The database is inaccessible. Original exception is: DataAccessResourceFailureException: Error retreiving database metadata; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Could not get Connection for extracting meta data; nested exception is org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.jboss.util.NestedSQLException: Unable to get managed connection for RHEVMDataSource; - nested throwable: (javax.resource.ResourceException: Unable to get managed connection for RHEVMDataSource)
 

What am I doing wrong?