<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div><div><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000;" data-mce-style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000;"><div>Hi,<br></div><br><div>I'm trying to install Openstack Ocata in <br></div><div>Ubuntu 16.04.2 LTS.<br></div><br><div>During installation of nova at this step<br></div><div>su -s /bin/sh -c "nova-manage db sync" nova<br></div><br><div>I get the following error<br></div><br><div>An error has occurred:<br>Traceback (most recent call last):<br> File "/usr/lib/python2.7/dist-packages/nova/cmd/manage.py", line 1594, in main<br> ret = fn(*fn_args, **fn_kwargs)<br> File "/usr/lib/python2.7/dist-packages/nova/cmd/manage.py", line 644, in sync<br> return migration.db_sync(version)<br> File "/usr/lib/python2.7/dist-packages/nova/db/migration.py", line 26, in db_sync<br> return IMPL.db_sync(version=version, database=database, context=context)<br> File "/usr/lib/python2.7/dist-packages/nova/db/sqlalchemy/migration.py", line 53, in db_sync<br> current_version = db_version(database, context=context)<br> File "/usr/lib/python2.7/dist-packages/nova/db/sqlalchemy/migration.py", line 84, in db_version<br> _("Upgrade DB using Essex release first."))<br>NovaException: Upgrade DB using Essex release first.<br><br></div><br><div>Request the help for solving this issue.<br></div><br><div>Thanks,<br></div><div>S.Gopinath</div></div></div></div><div data-marker="__QUOTED_TEXT__"><br></div></div></body></html>