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IDS Forum

Re: AF During Archive - Looks Familiar

Posted By: Art Kagel
Date: Tuesday, 8 June 2010, at 4:37 p.m.

In Response To: Re: AF During Archive - Looks Familiar (WALDEMAR ZNOINSKI)

Waldek,

To most easily move the blobspace back, you can:

- Bring the instance offline

- dd the blobkspace chunks to the original devices/files

- move the existing links to the new copies

- bring the engine back online

No need to do the ALTER TABLE unless you can't take the engine offline for
the time it will take to copy the chunk(s). (You can do a test copy while
the engine is online to establish a downtime baseline.)

Art

Art S. Kagel
Advanced DataTools (www.advancedatatools.com)
IIUG Board of Directors (art@iiug.org)

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 Tue, Jun 8, 2010 at 4:17 PM, WALDEMAR ZNOINSKI <waldek@znoinski.pl>wrote:

> hi Mike,
> I was excercising a workaround for similar issue few weeks ago, reading now
> Art's post I'm quite sure the 'bad page' issue was a result of engine crash
> -
> it was not on production but on Development machine. Our developers like to
> test new things like new JDBS/JBOSSes and one of these (pretty sure it was
> the
> 2nd one) was used by developers during a project. JBOSS kept a pool of
> database connections to the IDS. One of the connection from this pool was
> assigned to a developer which needed connection to IDS. This time developer
> was not a problem itself - the JBOSS was not clearing the memory after the
> developer's sessions finished - it was assigning new and new memory
> segments
> and strangely even crashing the IDS once (this is our IDS support company
> opinion and not my own).
>
> The fix for that blobdbs we did - as proposed by the same company - to:
> 1. create a blobdbspace (called blobdbs2) in the same size as the original
> (with bag page error) one.
> 2. alter all the tables from blobdbs -> blobdbs2 (single user mode should
> be
> used)
> 3. ensuring there's nothing more in blobdbs then drop 'blobdbs'
> 4. rename blobdbs2 -> blobdbs (hic! quiescent mode needed)
>
> I'm about to re-create the blobdbs in the original place on the device and
> do
> the same excercise to have the blobdbs back in-place, didn't have time to
> do
> this though.
>
> Hope that helped
> Waldek (IDS11.50FC6W4, SUSE10.3)
>
>
>
> *******************************************************************************
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>

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