I'm starting a new thread on this specific topic to avoid high jacking the other one. Reading about this "ghost data" reminds me of a surprising discovery I made a few months ago but had forgotten about until today. I created a brand new tablespace with a new datafile, created one table in the new tablespace and inserted one row. When I ran "strings" on the datafile, I only saw the instance name and tablespace name - so far, so good. Then I forced a checkpoint to write the data out to the file and was surprised to find that when I looked at the datafile with "strings" again, it had a bunch of data from other database tables in it. Is this normal, known behavior? Does Oracle just copy data from other blocks of the database into the new file as buffer space to fill it up? I duplicated this on 18.104.22.168 and 10.2.0.4. Thanks, Brandon From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Michael Wehrle Sent: Tuesday, June 30, 2009 1:45 PM To: Mathias Magnusson; oracle-l Subject: Re: Quickest Way To Recreate a Database Mathias, Oracle explains what this ghost data is here... http://www.oracle.com/technology/deploy/security/database-security/transparent-data-encryption/tde_faq.html#A15032 ________________________________ Privileged/Confidential Information may be contained in this message or attachments hereto. Please advise immediately if you or your employer do not consent to Internet email for messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of this company shall be understood as neither given nor endorsed by it.