RHEV DWH/Reports upgrade from 3.2 to 3.4 fails

Issue

• When upgrading RHEV DWH or reports package from version 3.2 through 3.3 to 3.4 version, reports upgrade fails.
• I upgrade RHEV to 3.4 and now engine-backup failed with command :

/usr/bin/engine-backup --scope=all --mode=backup --log=/disk1/rhev_backup/backup.$(/bin/date +%Y%m%d%H%M%S).out  --file=/disk1/rhev_backup/backup.$(/bin/date +%Y%m%d%H%M%S).tar.bz
pg_dump: [programme d'archivage (db)] la connexion à la base de données « ovirt_engine_history » a échoué : FATAL:  authentification Ident échouée pour l'utilisateur « engine_history »
2014-06-12 09:27:39 23531: FATAL: Database ovirt_engine_history backup failed

• We get the following error when we try to install/update the RHEV reports after upgrading from 3.3 to 3.4

[ ERROR ] Failed to execute stage 'Misc configuration': Command './js-export.sh' failed to execute