<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html xmlns:st1="urn:schemas-microsoft-com:office:smarttags"> <head> <meta http-equiv=Content-Type content="text/html; charset=iso-8859-1"> <meta name=Generator content="Microsoft Word 10 (filtered)"> <style>  </style> </head> <body bgcolor=white lang=EN-US link=blue vlink=purple> <div class=Section1> · moving from a Professional into an <st1:City><st1:place>Enterprise</st1:place></st1:City> version, is it just an upgrade or it requires a "re-installation" you will need to reinstall the system · how long will it take to do the job the OS is installed in under an hour, provided you aren’t going to recompile the kernel or do other fancy things. Don’t forget to grab all relevant updated packages via up2date or rhn downloads (kernel and glibc at minimum come to mind) · do you have any contingency plan or strategy to suggest If its that critical get a 2nd system and perform the new install there while your production system is running. Test your entire tech stack, do a full import of the DB data, test all apps accessing the DB, let the system run a few days under simulated load. Then take the old system offline and swap in the new one. If you cant afford to buy a 2nd system at least test it on something that remotely resembles what you got in production. · is there any guaranty of full compatibility between both versions? Only testing and your third party software vendors will be able to tell you, one thing worth noting is that the default threading implementation changed (which may apply to your software or not) , however, you can always revert back to linuxthreads should your software require it. Cheers, Tobias -----Original Message----- From: redhat-list-bounces@redhat.com [mailto:redhat-list-bounces@redhat.com] On Behalf Of María Viola Deambrosis Sent: Tuesday, April 06, 2004 11:50 AM To: redhat-list@redhat.com Subject: Moving into Linux Enterprise- Doubts/questions <div> </div> Hi, We have a production Database Server, with a professional Red Hat O.S installed. Here is detail information about it: Hardware: · DELL Power Edge 2600 Database · Informix Dynamic Server Version 9.30.UC3 O.S · Red Hat 7.3 · Kernel: Linux 2.4.18-3smp / Apr 18 <st1:time Minute="27" Hour="19"> 07:27:31</st1:time> 2002 i686 · Glib: 2.2.5-34 We are planning on moving from the Professional version into the <st1:City><st1:place>Enterprise</st1:place></st1:City> Red Hat <st1:City><st1:place>Enterprise</st1:place></st1:City> Linux 3.0. Since the business is a 7x24x365 one, and the DBSrv is the production one, we have few questions/doubts: · moving from a Professional into an <st1:City><st1:place>Enterprise</st1:place></st1:City> version, is it just an upgrade or it requires a "re-installation" · how long will it take to do the job · do you have any contingency plan or strategy to suggest · is there any guaranty of full compatibility between both versions? <div style='margin-top:5.0pt;margin-bottom:5.0pt'> Thanks for your assistance </div> <div style='margin-top:5.0pt;margin-bottom:5.0pt'> </div> <div> María </div> <div> </div> <div> </div> </div> </body> </html>