ADSM-L

Re: very very big DB!!!!

2005-06-10 10:27:38
Subject: Re: very very big DB!!!!
From: "Das, Samiran (IDS ECCS)" <samiran_das AT ML DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Fri, 10 Jun 2005 10:27:20 -0400
Mark,

How many objects are examined daily during expiration processing?

Regards, Samiran Das


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Remeta, Mark
Sent: Friday, June 10, 2005 10:25 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: very very big DB!!!!


We have a 112gb database that is 83% utilized and it only takes 30
minutes to complete an expire inventory. Either I have a real fast
server or you have a real slow one!


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Rees, Chris (Corp)
Sent: Friday, June 10, 2005 10:15 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: very very big DB!!!!

Hi Rick

Our unload/reload what about 10 weeks ago and halved our database from
100Gb for 50Gb... the database has grown by 20% since but expire
inventory is still much quicker than it was prior to the unload/reload,
it is however taking longer than immediately after the process...
definitely a worthwhile exercise.

Before 21 hours
Immediately after unload/reload 6 hours
Now 10 hours

It examines 21million objects..

Chris

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Richard Rhodes
Sent: Friday, June 10, 2005 3:06 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] very very big DB!!!!

Did you notice a performance improvement after the reorg.  If you did,
is it still performing better since it has grown?

Thanks

Rick




                      "Warren, Matthew
                      (Retail)"                   To:
ADSM-L AT VM.MARIST DOT EDU
                      <Matthew.Warren@POWE        cc:
                      RGEN.CO.UK>                 Subject:  Re: very
very big DB!!!!
                      Sent by: "ADSM: Dist
                      Stor Manager"
                      <ADSM-L AT VM.MARIST DOT ED
                      U>


                      06/10/2005 06:24 AM
                      Please respond to
                      "ADSM: Dist Stor
                      Manager"






It is different from DBBackup - there are specific load/unload abilities
in TSM. The process results in the DB being re-orged. We recently went
through the process and approximatley halved  the size of our 120GB DB,
the gain is fairly short lived though. The re-org was around 8 weeks ago
and the DB is back up to 80% of its original size.


Matt.

Computer says 'No'..

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Lawrence Clark
Sent: Thursday, June 09, 2005 3:33 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: very very big DB!!!!

unload / load? you mean backup then restore. will that reorg the db?

>>> dlcurrell AT YAHOO DOT COM 06/09/2005 10:23:23 AM >>>
30 GB is not outrageously large. I've worked with one that was almost
twice that size. You can unload and load the database or perhaps do an
audit on it. There's an entire section called utilities in the Admin
Reference. Be forewarned that an audit could take days if not
weeks...!!!
--- Mario Di Pede <mario.dipede AT GIDI DOT IT> wrote:

> Hi
> I have a TSM DB of 30 Gb - there are a utilities for cleaning its?????
>
> thank's all
>


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