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IDS Forum

Re: Loading blobs

Posted By: Art Kagel
Date: Thursday, 21 February 2013, at 8:38 a.m.

In Response To: Loading blobs (Andrew Grantham)

Question: What's the full mission you need to accomplish? For example, are
you reloading blobs because these were exported then deleted and now you
need them back? Or is it that you exported the records to move them from
one database or server to another database or server and the reload is too
slow? How were they exported (using what tools)?

If what you REALLY need to do is to move the blobs from one server to
another, consider copying the data directly using my dbcopy utility. It is
very fast (almost as fast as the HPLoader or external files in general) and
you save the time and overhead of writing the data to disk as flat files
and reading it back. You can also divide the data in the table using
filters into multiple subsets and run many copies of dbcopy copying all of
those subsets in parallel which will make the copy MUCH faster than either
HPLoader or external tables.

Dbcopy is included in the package utils2_ak which you can download from the
IIUG Software Repository (www.iiug.org/software).

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 Thu, Feb 21, 2013 at 5:06 AM, Andrew Grantham <agrantha@hotmail.com>wrote:

> All,
>
> Informix 11.70.FC2 on Sun Solaris.
>
> I would like to reload a table that contains BLOBs using something like the
> High Performance Loader or EXTERNAL tables but nothing I have managed to
> configure so far works with any amount of speed. I believe I cannot use
> no-conversion format because loading BLOBs has restrictions. Anyway I am
> seeking your experiences on loading BLOBs and how to make it as quick as
> possible. All thoughts and advice welcome.
>
>
>
> *******************************************************************************
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>

--e89a8f22beb990a30b04d63c2e1f

Messages In This Thread

  • Loading blobs
    Andrew Grantham -- Thursday, 21 February 2013, at 5:06 a.m.
    • Re: Loading blobs
      Art Kagel -- Thursday, 21 February 2013, at 8:38 a.m.

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