Re: cross platform migration
- From: Jinwen Zou <zjworacle@xxxxxxxxx>
- To: oracle.blog3@xxxxxxxxx
- Date: Mon, 17 Feb 2014 14:48:40 +1100
If you went down to logical apply path, some zero/real-time data
integration/replication rivals of Goldengate might worth to have a look.
Type "Oracle Goldengate vs " and plus another character [a-z] in Google
search, Google will tip you the major rivals starting with that
character.
Shareplex from Quest (bought by DELL) who owns TOAD for Oracle as well, is
one of the products used in one of my former company, it was used to
replicate databases across data centers in high OLTP workload in same
platform and same oracle version. However, I don't think cross
platform/version will be problem.
On Mon, Feb 17, 2014 at 1:21 PM, max scalf <oracle.blog3@xxxxxxxxx> wrote:
> hello all,
>
> Looks like GOLDEN GATE is in the picture for our migration now, but one
> thing i am confused about is the supported version...our database(version
> 10.2.0.4) is on hp-ux paric 11.11....and we are going to go to linux(DB
> version still the same)...so my question is, can i still install golden
> gate on hp-ux 11.11, i am unable to find any golden gate version for that
> system or do i just have to open a ticket with oracle support and ask for a
> older version of Golden gate that support our 10.2.0.4 DB on HP
> 11.11......if i cannot use golden gate, what other options do i have?
>
>
> On Wed, Feb 12, 2014 at 7:29 PM, Svetoslav Gyurov <softice@xxxxxxxxx>wrote:
>
>> Hi Max,
>>
>> Sorry for not making clear. It's simply because you won't be able to
>> mount the filesystem on the "other side" once you split the BCV. The CDC is
>> a feature of the Veritas Volume Manager which provides you with a
>> foundation for moving data between different systems within a heterogeneous
>> environment. Just type *sfhas_solutions_601_lin* in google and download
>> the first pdf which is *Veritas Storage Foundation(tm) and High
>> Availability Solutions 6.0.1 Solutions Guide - Linux*
>>
>> Sve
>>
>>
>>
>> On Thu, Feb 13, 2014 at 1:13 AM, Jack van Zanen <jack@xxxxxxxxxxxx>wrote:
>>
>>> Hi,
>>>
>>>
>>> One other gotcha is that Oracle RMAN convert can not handle clusters
>>> with endian conversions.
>>> We are working with support at the moment to get a fix for it, but it
>>> has been a while now...
>>>
>>> Jack
>>>
>>> Jack van Zanen
>>>
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>>>
>>> On Thu, Feb 13, 2014 at 12:09 PM, max scalf <oracle.blog3@xxxxxxxxx>wrote:
>>>
>>>> Sve,
>>>>
>>>> Golden Gate is out of budget here and also SAP dose not support that
>>>> part. We were told to make this happen within the current license
>>>> agreement.
>>>>
>>>> Please excuse my knowledge here about BCV splits. But lets say i do
>>>> not have BCV splits in place my process would be to
>>>>
>>>> 1. put tablespace in read only mode
>>>> 2. export metadata(transportable tablespace=y)
>>>> 3. copy the export files and also copy the data files from source to
>>>> target
>>>> 4. run RMAN convert command on target
>>>> 5. import the medata
>>>>
>>>> so my question is why do i need that extra step of conversion the
>>>> endiness at storage level(CDS)...is that a standard thing? Our storage
>>>> admins are the one who takes care of the BCV splits and i am hoping if we
>>>> are going to use the BCV splits then i dont need that CDS thing you talked
>>>> about earlier, or if we do, is that a standard tool given by storage
>>>> vendors(i believe our vendor is EMC) or do i need special licensing for it?
>>>>
>>>>
>>>> On Wed, Feb 12, 2014 at 6:55 PM, Svetoslav Gyurov <softice@xxxxxxxxx>wrote:
>>>>
>>>>> Hi Max,
>>>>>
>>>>> Indeed, you need to convert the file system first which will save you
>>>>> copying all the 30TB of data and then you need to run RMAN convert.
>>>>>
>>>>> Are you considering GoldenGate as an option or it would be out of
>>>>> budget ?
>>>>>
>>>>> Sve
>>>>>
>>>>>
>>>>> On Thu, Feb 13, 2014 at 12:44 AM, max scalf <oracle.blog3@xxxxxxxxx>wrote:
>>>>>
>>>>>> Thanks Sve, I was under the impression that i could just take the
>>>>>> mount point from HP and mount it over to linux as i oracle was going to
>>>>>> do
>>>>>> the RMAN Conversion process for me. But you are saying i need to do it
>>>>>> at
>>>>>> the storage level(CDS) and then also do it at database level ?
>>>>>>
>>>>>>
>>>>>> On Wed, Feb 12, 2014 at 5:06 PM, Svetoslav Gyurov
>>>>>> <softice@xxxxxxxxx>wrote:
>>>>>>
>>>>>>> Hi Max,
>>>>>>>
>>>>>>> Yeah, BCVs has been my favorite when we need to clone or refresh the
>>>>>>> DEV/UAT environments. However these platforms still have different
>>>>>>> endianness and you need to convert the file system itself. This can be
>>>>>>> done
>>>>>>> using the Cross-platform Data Sharing (CDS) featureof Symantec's Veritas
>>>>>>> Storage Foundation software which will allow you to create portable data
>>>>>>> containers (PDC) and mount the volumes on different platforms. I
>>>>>>> remember
>>>>>>> seeing one or two years ago similar presentation (maybe OOW
>>>>>>> presentations)
>>>>>>> about using this approach and greatly reducing the time for migration.
>>>>>>>
>>>>>>> Regards,
>>>>>>> Sve
>>>>>>>
>>>>>>>
>>>>>>> On Wed, Feb 12, 2014 at 10:42 PM, max scalf
>>>>>>> <oracle.blog3@xxxxxxxxx>wrote:
>>>>>>>
>>>>>>>> Sve/All,
>>>>>>>>
>>>>>>>> Thanks for you input. i guess RMAN incremental
>>>>>>>> backup/restore/recover is out of the picture and so is data guard. We
>>>>>>>> are
>>>>>>>> going from 10.2.0.4 to 10.2.0.4 (due to some SAP kernel restrictions)
>>>>>>>>
>>>>>>>> For that 30TB database all that Data is usable(cannot be
>>>>>>>> purge/archived) so we have to move that to a platform, but one thing i
>>>>>>>> can
>>>>>>>> think of is for the big database we do have BCV split/mirror in place,
>>>>>>>> can
>>>>>>>> i somehow use that?
>>>>>>>>
>>>>>>>> For example
>>>>>>>> 1. on source DB put all tablespace in read only mode and start meta
>>>>>>>> data export(transportable tablespace=y)
>>>>>>>> 2. once in read only mode take a BCV split(in parallel) of all the
>>>>>>>> datafile mount points and mount it on target
>>>>>>>> 3. once the file system is mounted on target, start the RMAN
>>>>>>>> conversion process (how could would this take, is this depended on DB
>>>>>>>> size
>>>>>>>> or what?)
>>>>>>>> 4. once conversion is completed, start the import of the metadata
>>>>>>>>
>>>>>>>> if above can be used, only concern i have is we have probably about
>>>>>>>> 2k - 3K datafiles(spread across 100's of mount points) or so and i
>>>>>>>> might
>>>>>>>> some how miss doing the convert process in RMAN for those data file or
>>>>>>>> miss
>>>>>>>> them while doing the import part(where i believe i have to give
>>>>>>>> datafile =
>>>>>>>> locations of all files)..any pointers here ?
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On Wed, Feb 12, 2014 at 3:38 PM, Svetoslav Gyurov <
>>>>>>>> softice@xxxxxxxxx> wrote:
>>>>>>>>
>>>>>>>>> Hi Max,
>>>>>>>>>
>>>>>>>>> My comments are inline, I assume you are migrating 10.2.X to
>>>>>>>>> 11.2.X ?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Wed, Feb 12, 2014 at 8:54 PM, max scalf <oracle.blog3@xxxxxxxxx
>>>>>>>>> > wrote:
>>>>>>>>>
>>>>>>>>>> Hello List,
>>>>>>>>>>
>>>>>>>>>> I have a project that is going to get started soon and i wanted
>>>>>>>>>> to get some Pointers with regards to it. Please excuse my
>>>>>>>>>> knowledge, as i
>>>>>>>>>> am from SQL Server background and a seasonal oracle DBA. Project is
>>>>>>>>>> to
>>>>>>>>>> move our DB(multiple DB size from 1TB - 30TB) from hp-ux pa risc to
>>>>>>>>>> RHEL.
>>>>>>>>>> We have quite a few restriction in options as our app is SAP :-( .
>>>>>>>>>> Couple
>>>>>>>>>> of SAP notes i read suggested that we can use use cross platform
>>>>>>>>>> transportable tablespace, which is what i am planning to do as well.
>>>>>>>>>> I
>>>>>>>>>> wanted to find out couple of things from the list
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> 1. First of all if anyone has done this(on a SAP system), if
>>>>>>>>>> so any gotcha
>>>>>>>>>> 2. To reduce the down time i was planing to do a restore
>>>>>>>>>> ahead of the cut over(lets say 3 days in advance) and then keep
>>>>>>>>>> applying
>>>>>>>>>> archive log until the day of cut over. Is that even possible for
>>>>>>>>>> this
>>>>>>>>>> situation (as i have to do RMAN Convert of the datafiles and then
>>>>>>>>>> keep
>>>>>>>>>> applying logs)
>>>>>>>>>>
>>>>>>>>>> Nope, you cannot restore/recover on a mixed platforms.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> 1. i cannot do transportable DATABASE, as i am going from big
>>>>>>>>>> endianess to little( i believe #2 is possible here, as i read this
>>>>>>>>>>
>>>>>>>>>> doc<http://www.pythian.com/blog/howto-oracle-cross-platform-migration-with-minimal-downtime/>
>>>>>>>>>> )
>>>>>>>>>>
>>>>>>>>>> Correct, they should be having the same same endian and you are
>>>>>>>>> migrating from Big to Little.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> 1. I read an option some place that mentioned i could have
>>>>>>>>>> heterogeneous data guard setup for this migration, but when i
>>>>>>>>>> read MOS doc
>>>>>>>>>> ID 413484.1, i do not think hp ux to RHEL Data guard is
>>>>>>>>>> supported or have i gotten that wrong.
>>>>>>>>>>
>>>>>>>>>> Indeed, it is not:
>>>>>>>>> RMAN DUPLICATE/RESTORE/RECOVER Mixed Platform Support (Doc ID
>>>>>>>>> 1079563.1)
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> 1. any other recommendation in general due to the size of our
>>>>>>>>>> DB. The one i am worried about is our 30TB DB which takes about
>>>>>>>>>> 18 hours
>>>>>>>>>> to do weekly Level 0 backup and customer wants to do the
>>>>>>>>>> migration in less
>>>>>>>>>> than 10 hours
>>>>>>>>>>
>>>>>>>>>> Does all the 30TB db having operational data ? Are there any read
>>>>>>>>> only or archive tablespaces ?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> 1. is cross platform transportable tablespace a bad idea as
>>>>>>>>>> SAP creates thousands and thousands of objects in the database
>>>>>>>>>> and the
>>>>>>>>>> metadata would be too much to export/import
>>>>>>>>>>
>>>>>>>>>> I can't think of a limitation of that one. You might export you
>>>>>>>>> metadata in parallel and also exclude statistics to improve the time.
>>>>>>>>> You
>>>>>>>>> problem here would be the time it takes to copy 30TB over the new
>>>>>>>>> platform
>>>>>>>>> and then convert them.
>>>>>>>>>
>>>>>>>>> GoldernGate of course is the holly grail. Quick look on MOS shows
>>>>>>>>> that HP-UX PARISC is supported platform for Oracle GoldenGate
>>>>>>>>> 11.2.1.0.6.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Regards,
>>>>>>>>> Sve
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> I would really appreciate some pointers.
>>>>>>>>>>
>>>>>>>>>> Thanks,
>>>>>>>>>> Max
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>
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