O/S requirements for CLR
Informix 11.50.FC6WE, HP-UX 11.31 PA-RISC We are considering using continuous log restore (CLR) as a low-bandwidth option to keep our off-site disaster recovery system updated. The hardware is similar at both sites. Both have HP-UX 11.31. The question is, how closely do the two systems have to be in OS releases? Do they have to match EXACTLY? Or is it enough that the two are at 11.31? Can they be at different update levels (e.g., one on the September 2011 update and the other on March 2012)? On the Informix side, I know that the two servers have to be on the same major release, such as 11.50. I believe, but I have not found it in the manual yet, that they really also need to match at the minor release level, so both would need to be 11.50.FC6. Can anyone point me to the correct manual page to confirm that one way or the other. Thanks in advance.
Mark, consider using continuous log restore for this instead. It is much easier to implement and no programming required! Art On Nov 9, 2012 11:13 AM, "MARK COLLINS" <markc@myfastmail.com> wrote: > Informix 11.50.FC6WE, HP-UX 11.31 PA-RISC > > We are considering using continuous log restore (CLR) as a low-bandwidth > option to keep our off-site disaster recovery system updated. The hardware > is > similar at both sites. Both have HP-UX 11.31. The question is, how closely > do > the two systems have to be in OS releases? Do they have to match EXACTLY? > Or > is it enough that the two are at 11.31? Can they be at different update > levels > (e.g., one on the September 2011 update and the other on March 2012)? > > On the Informix side, I know that the two servers have to be on the same > major > release, such as 11.50. I believe, but I have not found it in the manual > yet, > that they really also need to match at the minor release level, so both > would > need to be 11.50.FC6. Can anyone point me to the correct manual page to > confirm that one way or the other. > > Thanks in advance. > > > > ******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. > > --f46d0401f59138f87404ce132aa0
Art, The OP said we were considering continuous log restore. That was the only option I was asking about. I was only trying to find out how closely the two servers had to match in terms of Informix and HP-UX versions. Did I use an incorrect abbreviation when I chose CLR?
Sorry Mark. I read CDC. My bad. AFAIK, major and minor versions are sufficient. Patch releases do not count. But still best to just call IBM support and get the official line on that. Art Art On Nov 9, 2012 12:47 PM, "MARK COLLINS" <markc@myfastmail.com> wrote: > Art, > > The OP said we were considering continuous log restore. That was the only > option I was asking about. I was only trying to find out how closely the > two > servers had to match in terms of Informix and HP-UX versions. > > Did I use an incorrect abbreviation when I chose CLR? > > > > ******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. > > --14dae9340befa2b6d704ce149c74
Documentation states: "Ensure that the version of IBM® Informix® is identical on both the primary and secondary systems." I assume this means fixpack level... we can change something in the logical logs between fixpacks. It may work for years, but you may get into troubles... For example "compression" vs "no compression" etc. Don't do it with different fixpacks... Why would you need to do it? Regards On Fri, Nov 9, 2012 at 7:03 PM, Art Kagel <art.kagel@gmail.com> wrote: > Sorry Mark. I read CDC. My bad. AFAIK, major and minor versions are > sufficient. Patch releases do not count. But still best to just call IBM > support and get the official line on that. > > Art > > Art > On Nov 9, 2012 12:47 PM, "MARK COLLINS" <markc@myfastmail.com> wrote: > > > Art, > > > > The OP said we were considering continuous log restore. That was the only > > option I was asking about. I was only trying to find out how closely the > > two > > servers had to match in terms of Informix and HP-UX versions. > > > > Did I use an incorrect abbreviation when I chose CLR? > > > > > > > > > > ******************************************************************************* > > Forum Note: Use "Reply" to post a response in the discussion forum. > > > > > > --14dae9340befa2b6d704ce149c74 > > > > ******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. > > -- Fernando Nunes Portugal http://informix-technology.blogspot.com My email works... but I don't check it frequently... --20cf3074b69210f72b04ce14c665