I'd also recommend having a wander through the information on OTN - http://www.oracle.com/technetwork/oem/install-upgrade/index.html - looking specifically at the 12.1.0.3 material. Pete Pete Sharman Principal Product Manager Enterprise Manager Product Suite 33 Benson Crescent CALWELL ACT 2905 AUSTRALIA Phone: +61262924095 | | Fax: +61262925183 | | Mobile: +61414443449 "Controlling developers is like herding cats." Kevin Loney, Oracle DBA Handbook "Oh no, it's not, it's much harder than that!" Bruce Pihlamae, long term Oracle DBA -----Original Message----- From: Hans Forbrich [mailto:fuzzy.graybeard@xxxxxxxxx] Sent: Friday, August 30, 2013 10:53 PM To: Outsider Cc: Peter Sharman; Oracle L Subject: Re: Oracle 12c DB for EM12c On 30/08/2013 4:48 AM, Outsider wrote: > Can I do it from self update or no ? How to do it ? and I will lose my > data ? > No, going from OE 12c CC Core 12.1.0.2->12.1.0.3 is not a 'self-update' step. You are strongly encouraged to read the upgrade doc at http://docs.oracle.com/cd/E24628_01/index.htm Since each installation is different in some way, you should plan your upgrade carefully based on the doc. The upgrade process allows you to retain the data - but you need to decide based on your analysis of the upgrade path. /Hans -- //www.freelists.org/webpage/oracle-l -- //www.freelists.org/webpage/oracle-l