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Oracle in a mixed PA-RISC/Itanium Enviroment

Mike Lynch_8
Occasional Contributor

Oracle in a mixed PA-RISC/Itanium Enviroment

Hi All

We are currently on HPUX 11.0 an Oracle 9.2.0.7
We have 3 servers production, development and standby.
We are considering migrating some/all of our servers to Itanium and running production and development from a shared SAN (EVA) and making use of Business Copy to do regular snapshots of production to development.
Will our PA-RISC servers be totally obsolete from an Oracle point of view ? I know you can migrate Oracle from PA-RISC to Itanium. Is a restore from Itanium to PA-RISC is not an option ? (apart from imp/exp that is)

Thanks

Mike
8 REPLIES
Steven E. Protter
Exalted Contributor

Re: Oracle in a mixed PA-RISC/Itanium Enviroment

Shalom Mike,

Its a different set of binaries, therefore the data is going to be slightly different.

imp/exp is certainly a valid migration method.
oracle may have a tool.

cold (database down) file copying will not work.

SEP
Steven E Protter
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Yogeeraj_1
Honored Contributor

Re: Oracle in a mixed PA-RISC/Itanium Enviroment

hi Mike,

Copy of the datafiles (ONLY) across the environments may work. You will have to test it.

You must also ensure that the same patch level and versions of Oracle are installed on both servers.

Good luck!

kind regards
yogeeraj
No person was ever honoured for what he received. Honour has been the reward for what he gave (clavin coolidge)
Duncan Edmonstone
Honored Contributor

Re: Oracle in a mixed PA-RISC/Itanium Enviroment

Sorry SEP, but a copy of datafiles absolutely *will* work. There is no difference in data formats between PA and IA.

Mike,

There's a whitepaper that will talk you through the process here:

http://h71028.www7.hp.com/erc/downloads/5981-6427en.pdf

HTH

Duncan

HTH

Duncan
Duncan Edmonstone
Honored Contributor

Re: Oracle in a mixed PA-RISC/Itanium Enviroment

I probably should have added that you *cannot* copy the binaries. But copying the data after a shutdown will work fine.

HTH

Duncan

HTH

Duncan
Yogeeraj_1
Honored Contributor

Re: Oracle in a mixed PA-RISC/Itanium Enviroment

hi,

Duncan,
I think that the "Binary" part of the answer is correct!

You cannot copy binary files however the DATA files can be copied.

One feature you can also look into is transportable tablespaces.

kind regards
yogeeraj
No person was ever honoured for what he received. Honour has been the reward for what he gave (clavin coolidge)
Court Campbell
Honored Contributor

Re: Oracle in a mixed PA-RISC/Itanium Enviroment

> Will our PA-RISC servers be totally obsolete from an Oracle point of view?

I would say no. I would think these servers would be useful until the day that HP stops support on PA-RISC servers.

Datafiles should be ok to replicate, but not the binaries.
"The difference between me and you? I will read the man page." and "Respect the hat." and "You could just do a search on ITRC, you don't need to start a thread on a topic that's been answered 100 times already." Oh, and "What. no points???"
Dennis Handly
Acclaimed Contributor

Re: Oracle in a mixed PA-RISC/Itanium Enviroment

>Duncan: There is no difference in data formats between PA and IA.

If IEEE floating point numbers are allowed in your database, be aware that NaNs have different formats for quiet and signaling for PA vs IPF.
Ben Dehner
Trusted Contributor

Re: Oracle in a mixed PA-RISC/Itanium Enviroment

For the most part, Oracle is more concerned with the OS version than the hardware platform. However, Oracle on Itanium is a different build than Oracle on PA-RISC, so you have to install the proper version.

The datafiles between PA-RISC and Itanium are compatible. You can simply copy the files, and you're good to go. Oracle even supports dataguard between IT and PA-RISC -- provided you are running 9.2.0.8 and both system are running 11.23. I've run data guard between Itanium 11.23 and PA-RISC 11.11 with no problems -- it works, though Oracle doesn't officially support it.

HP-UX 11.0 is starting to get a bit dated. Before throwing Itanium in the mix, I'd suggest upgrading to at least 11.11. There are some significant differences between 11.0 and 11i. If your hardware supports it, 11.23 would be better.

If you are using cooked file systems, you need to make sure that all systems have the same version of OnlineJFS installed. (Or whatever file system software.) While the data files are compatible, if the target host can't read the file system, you can't use business copy functionality. Or at least make sure the file system is created at an older revision that everyone can understand.
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