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IDS Forum

Re: Informix Database testing

Posted By: medkba
Date: Wednesday, 24 July 2013, at 10:44 a.m.

In Response To: Re: Informix Database testing (Art Kagel)

Art,

If it is source database online at the same copy to destination source then
we cannot able to bring up destination server.

No issue if partial data copy to destination server.

Is it possible to bring up destination server database?

Thank you very much

On Wed, Jul 24, 2013 at 10:26 PM, Art Kagel <art.kagel@gmail.com> wrote:

> No. As I stated in my last, the source server has to be either completely
> offline, or have completed a full checkpoint, having flushed everything
> modified in memory to disk, and blocked from further modifications on disk
> in order for a file level copy to succeed in producing a usable copy of the
> server's storage. The checkpoint and block are accomplished with the
> onmode -c block command and the block released with onmode -c unblock.
> While the server is blocked, transactions can continue against memory,
> however, eventually, if the block lasts for a long time and the server is
> busy, then when all buffer cache pages become dirty (ie modified) and new
> data needs to be read in from disk, all transactions and most queries will
> also be blocked until the server block is released.
>
> Art
>
> Art S. Kagel
> Advanced DataTools (www.advancedatatools.com)
> Blog: http://informix-myview.blogspot.com/
>
> Disclaimer: Please keep in mind that my own opinions are my own opinions
> and do not reflect on my employer, Advanced DataTools, the IIUG, nor any
> other organization with which I am associated either explicitly,
> implicitly, or by inference. Neither do those opinions reflect those of
> other individuals affiliated with any entity with which I am affiliated nor
> those of the entities themselves.
>
> On Wed, Jul 24, 2013 at 10:16 AM, medkba <medkba@gmail.com> wrote:
>
> > Hi All,
> >
> > Source database is up and running at the same time Storage administrator
> > copy all the data (binary, raw device and other files) to destination
> > server but the OS and version and patch both are same as source and
> > destination.
> >
> > I am having doubt if the the database online. Is it copy properly on the
> > destination server and able to up the database or not.
> >
> > My informix verison is 11.50 FC9 HP-UX
> >
> > SQLHOSTS file i have changed destination server name but the source file
> is
> > up and running.
> >
> > Is it ok to change only the destination server name on the SQLHOSTS file?
> > or miss out some other information to startup the database.
> >
> > Please advise
> >
> > Thank you very much
> >
> > Regards
> > Baskaran
> >
> > On Wed, Jul 24, 2013 at 10:07 PM, Art Kagel <art.kagel@gmail.com> wrote:
> >
> > > IF and only IF the source database engine was offline or blocked
> (onmode
> > -c
> > > block) can a copy of the chunk files result in an engine that will run
> > > properly unless you are very very lucky!
> > >
> > > That said, you will have to change the hostname in the sqlhosts file,
> > but,
> > > assuming that the chunk files were restored to the same path they came
> > from
> > > or that the links for the chunk paths were properly linked up to the
> > > corresponding copy, then unless you want to change the servername or
> have
> > > another server online on that machine and need to change the
> > servernumber,
> > > all should work.
> > >
> > > Art
> > >
> > > Art S. Kagel
> > > Advanced DataTools (www.advancedatatools.com)
> > > Blog: http://informix-myview.blogspot.com/
> > >
> > > Disclaimer: Please keep in mind that my own opinions are my own
> opinions
> > > and do not reflect on my employer, Advanced DataTools, the IIUG, nor
> any
> > > other organization with which I am associated either explicitly,
> > > implicitly, or by inference. Neither do those opinions reflect those of
> > > other individuals affiliated with any entity with which I am affiliated
> > nor
> > > those of the entities themselves.
> > >
> > > On Wed, Jul 24, 2013 at 4:54 AM, medkba <medkba@gmail.com> wrote:
> > >
> > > > Hi All,
> > > >
> > > > We are having one server running informix database and system admin
> > > copied
> > > > all the files (binary with data) to other server same configruation.
> > > >
> > > > Do I need to change any configuration before startup database?
> > > >
> > > > Any standard practice needs to do this
> > > >
> > > > Thank you very much
> > > >
> > > > Regards
> > > > Baskaran
> > > >
> > > > --089e0158ab6cae68cd04e23e0d42
> > > >
> > > >
> > > >
> > > >
> > >
> > >
> >
> >
>
> *******************************************************************************
> > > > Forum Note: Use "Reply" to post a response in the discussion forum.
> > > >
> > > >
> > >
> > > --001a1133e414b78fef04e2426d01
> > >
> > >
> > >
> > >
> >
> >
>
> *******************************************************************************
> > > Forum Note: Use "Reply" to post a response in the discussion forum.
> > >
> > >
> >
> > --001a11c34dec850cdf04e24289bd
> >
> >
> >
> >
>
> *******************************************************************************
> > Forum Note: Use "Reply" to post a response in the discussion forum.
> >
> >
>
> --047d7b3439a478642e04e242afdc
>
>
>
> *******************************************************************************
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>

--089e013c6b84fe6a4804e242d954

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