1 Reply Latest reply on Apr 5, 2012 3:35 PM by Dude!

    Switch from RHEL 3 Update 4 to OEL 5.3

      Hello experts,

      We have a problem on our hands.
      We have a running EBS on our RHEL 3 Update 4.
      The details can be seen below:

      OS Kernel : Linux ---- 2.4.21-27.ELsmp #1 SMP Wed Dec 1 21:59:02 EST 2004 i686 i686 i386 GNU/Linux
      OS Release : Red Hat Enterprise Linux AS release 3 (Taroon Update 4)
      DB : [32-bit], SID, ----, cre:26-OCT-2005, start:30-MAR-2012 13:42
      APPS : [32-bit]
      Languages : Base: US Installed: RO, SK
      iAS(Server): iAS rollup 5 | SSO: NOT enabled (SSWA) | SSL: NOT enabled
      Disco10g : r=10 | EUL5_US([eul5#=266]
      Diagnostics: Oracle E-Business Suite 11i Diagnostic Tools, November 2008 - 8.11 {7530017}
      SUN JRE : 1.6.0_13
      Dev6i : Forms 6.0 (Form Compiler) Version (Production) = PS19, servlet JVMs=0
      JDK : Apps: 1.6.0_21-b06 | AD: 1.6.0_21-b06 | Apache: 1.6.0_21-b06
      TXK rollup : T (JUL 2009) {8217898}
      AD : 11i.AD.I.7, Shared
      ATG / OWF : 11i.ATG_PF.H.RUP7 {6241631}
      BIS | HZ : 11i.BIS.K, Installed | 11i.HZ.N {3618299}
      HR : 11I.HR_PF.K.DELTA.3 {6699770}
      Disco10g : is running on this node

      We want to upgrade our database to 11gR1. But in order to do this OnDemand recommended we should update our OS to *64bit* and also use OEL (5.3 more exact).
      My questions is: is there any way to do this (*go from 32bit RHEL 3 Update 4 to 64bit OEL 5.3*) without installing a fresh new OS, or messing up our environment ?

      Thank you in advance.


      Edited by: Sorin Miroiu on Apr 5, 2012 7:26 AM
        • 1. Re: Switch from RHEL 3 Update 4 to OEL 5.3
          Short answer: no.

          Red Hat does not support in-place upgrades between any major versions of Red Hat Enterprise Linux. In-place upgrades across major releases do not preserve all system settings, services or custom configurations. Consequently, Red Hat strongly recommends fresh installations when upgrading from one major version to another.

          You need to check your application prerequisites and requirements and also need to check your hardware to verify it is still sufficient and has all required firmware updates to support a much newer operating system.

          You have far too many upgrade variables, prerequisites and application requirements. I think you're only feasible option is to install Oracle Linux from scratch and copy/migrate the application to a new machine.