I'd argue that durability is a mirage.... You can engineer for longevity perhaps.... Maybe it should be ACIL, but that's not as catchy. Robert G. Freeman Master Principal Consultant, Oracle Corporation, Oracle ACE Author of various books on RMAN, New Features and this shorter signature line. Blog: http://robertgfreeman.blogspot.com Note: THIS EMAIL IS NOT AN OFFICIAL ORACLE SUPPORT COMMUNICATION. It is just the opinion of one Oracle employee. I can be wrong, have been wrong in the past and will be wrong in the future. If your problem is a critical production problem, you should always contact Oracle support for assistance. Statements in this email in no way represent Oracle Corporation or any subsidiaries and reflect only the opinion of the author of this email. ________________________________ From: Jonathan Lewis <jonathan@xxxxxxxxxxxxxxxxxx> To: Oracle L <oracle-l@xxxxxxxxxxxxx> Sent: Tuesday, August 23, 2011 2:54 AM Subject: ACID So who knows the meaning of ACID (not the Timothy Leary kind) ? http://tonyhasler.wordpress.com/2011/08/22/why-is-acid-important/ http://jonathanlewis.wordpress.com/2011/08/19/redo-2/ Regards Jonathan Lewis http://jonathanlewis.wordpress.com -- //www.freelists.org/webpage/oracle-l