Hi Mike, Your inquiry was brought to my attention today.
Could you possibly clarify what is meant by "headers are flushed when they are updated" in regard to UniVerse dynamic files? Is this in reference to the information in the T30FILE structure in the UniVerse disk shared memory segment being written to the header of the file when an update would result in changing one of the dynamic file parameters stored in the header? Or does this comment refer to the updated information in the header of the file being flushed to the physical disk via a sync operation? If the former, then it is my understanding that UniVerse has always updated the header immediately when a dynamic file parameter changed and there is no specific release in which this capability was added. If the latter, the only way to force the update to be flushed to disk immediately is to have the file activated for logging with UniVerse Transaction Logging and have Checkpoint mode enabled. Perhaps I'm not understanding the question so any clarification you can provide would be appreciated. Thanks, Neil Neil Morris SWG Client Support - Information Management Software UniVerse ATS b IBM U2 Client Support Team 1-877-676-9452 [email protected] "HENDERSON MIKE, MR" <MICHAEL.HENDERSO To [email protected]> <[email protected]> Sent by: cc owner-u2-us...@li "MACK ANDREW, MR" stserver.u2ug.org <[email protected]> Subject RE: [U2] Does anybody have a hot 03/19/2009 03:37 backup server? {Unclassified} PM Please respond to u2-us...@listserv er.u2ug.org Wol / Wally T / Anyone Can you please specify what was the earliest version of UV that includes the dynamic files "headers are flushed when they are updated" feature? For a site with lots & lots of dynamic files and planning a UV platform upgrade anyway, this would be a big pointer in determining the release to move onto. Regards Mike -----Original Message----- > From: [email protected] On Behalf Of Anthony W. Youngman > Sent: Friday, 20 March 2009 5:43 a.m. > To: [email protected] > Subject: Re: [U2] Does anybody have a hot backup server? > > Manu Fernandes <[email protected]> writes [snip] > >One restriction, we don't use DYNAMIC files because the headers are not > >permanently flushed when write occurs files. > > > I believe (iirc) IBM have confirmed that, as of the latest versions of > UV, the headers are flushed when they are updated so dynamic files are > now safe ... > > Cheers, > Wol > -- > Anthony W. Youngman <[email protected]> The information contained in this Internet Email message is intended for the addressee only and may contain privileged information, but not necessarily the official views or opinions of the New Zealand Defence Force. If you are not the intended recipient you must not use, disclose, copy or distribute this message or the information in it. If you have received this message in error, please Email or telephone the sender immediately. ------- u2-users mailing list [email protected] To unsubscribe please visit http://listserver.u2ug.org/ [demime 1.01d removed an attachment of type image/gif which had a name of graycol.gif] [demime 1.01d removed an attachment of type image/gif which had a name of pic20645.gif] [demime 1.01d removed an attachment of type image/gif which had a name of ecblank.gif] ------- u2-users mailing list [email protected] To unsubscribe please visit http://listserver.u2ug.org/
