AIX 5.2 to 5.3 migration


 
Thread Tools Search this Thread
Operating Systems AIX AIX 5.2 to 5.3 migration
# 1  
Old 04-17-2008
AIX 5.2 to 5.3 migration

Hello All,

We want to upgrade our 44p Model 270 from AIX 5.2 to 5.3. This is a standalone devlopment server but downtime is something we don't want because we have a short development deadline looming. I have no tape drive to make backups to. I myself am a developer and don't have any particular AIX experience, although I do have a fair amount of current experience with HPUX and Solaris.

My questions are:
  • Is this just an update or a full blown OS instal?
  • Will my existing apps like clarify and oracle 9 still be on the machine or will I have to reinstal them?
  • I have read threads saying to make 2 system backups to tape. I do not have a tape drive but might have a cdr on the machine, can i back it up to that?
  • Is this easy enough and does the software provide enough guidance that a person of my skill level could expect to accomplish this successfully
  • About how long should i expect and effort like this to take assuming there are no serious problems?

Thanks,
Fred
# 2  
Old 05-22-2008
Fred

DON'T!!!!

You can run a preserve install which MIGHT NOT overwrite you required data but it is destructive as far as the O/S is concerned and the only way back is a backup! Have you got another machine available to you to run a mksysb to which although not bootable can be recovered once 5.2 is reinstalled.
# 3  
Old 05-22-2008
The other thing you need to check is if the current versions of your apps will work with AIX 5.3. You may need to update those once you update to 5.3. We do a mksysb to our DVD drive. I have done Maintenance Level updates, but not an upgrade to another version.
# 4  
Old 05-23-2008
Fred,

* afaik it is called a migration, this is a bit different from a tl upgrade, you don't need to do a fresh install, Your setting are kept.
* Oracle 9 will run (maybe relinking is needed, maybe some issues), other applications will depend, you will need to check them.
* cdr might not be big enough, DVD might be. You can create a bootable image on disk and copy it to a system that has a DVD-writer (I never tried this). A bootable backup is always a good idea to have!
* upgrade (migrate) is very simple (if everything goes like it should), I suggest you to have a look at alternate disk migration, this gives you a fallback scenario in case youre install fails (and you don't have a bootable backup).
* In theory you're downtime is limited to the time it takes to reboot the system (plus application modification..)

I really advise you to make sure you have a sound sollution for the bootable backups, it will save you a lot of headaches when the sh*t hits the ...
# 5  
Old 05-25-2008
You might want to consider an "alt disk migration" to minimize downtime and have a quick fallback solution. As a prerequisite you need a mirrored rootvg (check with "lsvg -l rootvg" and compare the "LP" column with the "PP" column - if "PP" is two times "LP" for all filesystems the rootvg is mirrored).

You might start reading this and maybe this. In the first post there is also a link to some detailed procedures and in-depth documentation.

If you have specific questions please ask.

I hope this helps.

bakunin
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Solaris

Migration from AIX to Solaris

We are going to work on a project which aims at migrating set of applications from AIX to Solaris. The major portion of the source code involves C, C++, Shell/PERL scripts and Oracle database. We are grateful hear about any commercial tools available for porting AIX to Solaris. Another... (2 Replies)
Discussion started by: Namitap
2 Replies

2. Linux

AIX 6.1 to Linux 7.2 migration

Hi, recently we have migrated our current AIX server to Linux, we have lot of shell script, few of them are FTP scripts. we have copied the complete AIX file system to linux 7.2 as it is. could you please highlight what are the things we need to look into it . in AIX we are using .netrc to... (3 Replies)
Discussion started by: Riverstone
3 Replies

3. AIX

AIX - FC Switch migration, SAN Migration question!

I'm New to AIX / VIOS We're doing a FC switch cutover on an ibm device, connected via SAN. How do I tell if one path to my remote disk is lost? (aix lvm) How do I tell when my link is down on my HBA port? Appreciate your help, very much! (4 Replies)
Discussion started by: BG_JrAdmin
4 Replies

4. Solaris

Migration from AIX to Solaris

Hi All, We are planing to do a migration of our server from AIX 5.3 to Solaris (Linux). But we are not aware about the gap between the both and also impact of that gap. We want to migrate following things, - Common directories setup (like control-M, emer,sysout, and others) - Inbound &... (1 Reply)
Discussion started by: vinod369
1 Replies

5. AIX

AIX 5.3 migration gone bad

Hi all, I have a 7026-H70. It is currently running 5200-10-06-0835. I tried to do a migration installation of AIX 5.3. The installation completed, but the system would not boot afterwards. The display on the front panel showed the code "4BA00830" The only errors that I saw during the... (5 Replies)
Discussion started by: jhall
5 Replies

6. AIX

what is the procedure of aix migration?

can u tell me about AIX migration and NIM configuration (2 Replies)
Discussion started by: nagchundu
2 Replies

7. AIX

IY17981 fix required for aix 4.3.3 to aix 5L migration but not found

Hi, redbook documentation is telling that IY17981 fix is required for aix 4.3.3 to aix 5L migration. But there is no mention about that fix in any ML installation packages. - My system is ML11 : oslevel –r 4330-11 - But xlC.rte is on wrong version : lslpp -L xlC.rte xlC.rte ... (3 Replies)
Discussion started by: astjen
3 Replies

8. UNIX for Advanced & Expert Users

script migration from HP-UX to AIX

Dear All, What points should i keep in mind while migrating scripts from HP-UX to AIX. Are there any notes available for this? cheers, vishal (1 Reply)
Discussion started by: vishal_ranjan
1 Replies

9. UNIX for Dummies Questions & Answers

AIX Migration

Hi , Migrating AIX 4.3.3 ML10 to 5.3 ML1 (retaining 32 bit) after successfully going through 5 of the 5.3 Install CD's. After "All fileset's processed successfully " message I was told that system would reboot and then I would get prompted for setting TERm type ( i have an ascii ibm3151) and... (1 Reply)
Discussion started by: Student37
1 Replies

10. UNIX for Advanced & Expert Users

Migration UP-UX scripts to AIX.2

Hello, We would to migrate some shell (korn shell) scripts from HP-UX to AIX 5.2 I would know: - If the HP-UX scripts work as well in AIX? - In no, is there a migration tool to detect incompatible lines in scripts? - How do proceed? Our scripts do: - Loads data in Oracle... (1 Reply)
Discussion started by: P026687
1 Replies
Login or Register to Ask a Question