Re: Logical log backup - Why!?
Posted in 1997
Gary L. Burnore wrote: > > On 4 Dec 1997 03:50:52 GMT, "Irwin Goldstein" <irwin@objectsoft.com> > wrote: > > :It really depends on your needs. If the risk of losing a day's worth > of > :data is acceptable, then setting the log tape device (LTAPEDEV) to > :/dev/null is a reasonable option. If you do this, you don't even > need to > :run the continuous backup -- the engine seems to know that /dev/null > means > :the backup would only be thrown away and therefore frees each log as > soon > :as it is no longer needed for rolling back open transactions. > > I was under the impression that setting it to /dev/null actually wrote > the > output that would normally go to tape (/dev/rct or whatever) to > /dev/null. > Not that it would understand the string /dev/null to mean don't back > it up. No, /dev/null is seen as a special device, and your logs are thrown away. This is regardless of whether you intend to use OnTape or not, so be careful to set this field to anything OTHER than /dev/null if you want to back up your logs with say OnBar. Cheers, -- Mark. +----------------------------------------------------------+-----------+ |Mark D. Stock - Informix SA http://www.informix.com |//////// /| |mailto:mdstock@informix.com FAQ http://www.iiug.org |///// / //| | +-----------------------------------+//// / ///| | Tel: +27 11 807 0313 |If it's slow, the users complain. |/// / ////| | Fax: +27 11 807 2594 |If it's fast, the users keep quiet.|// / /////| |Cell: +27 83 250 2325 |Therefore, "No news: travels fast"!|/ ////////| +----------------------+-----------------------------------+-----------+