Re: what is the impact of Database size on Performemce - Mailing list pgsql-admin

From louisducnguyen@hotmail.com (louis nguyen)
Subject Re: what is the impact of Database size on Performemce
Date
Msg-id b0e9d53.0403301556.69835854@posting.google.com
Whole thread Raw
In response to what is the impact of Database size on Performemce  ("Avner" <avnera@cvdo.com>)
List pgsql-admin
> 1. Is there any impact?
> 2. Does one very large table impact the performence of the the whole DB,
> meaning the overall performence and access the other tables.
> 3. What are the ways to reduce the impact of the DB size  on the DB
> performence

I've run into 2 problems w/ very large DB.
A) Backups.  I have a 50G DB.  I backup to file then delete
yesterday's backup file (I have another process which transfers the
backup file to tape).  So I have a 50G backup file and I need another
50G freespace, to run my backup process.

B) Reindexing.  On any given day maybe 5% (max) of new data is added
to my DB.  But DBCC reindex has to work on all the indexes.  So DBCC
reindex takes 3 hours a night.  Yuck.

Maybe there is a better way.  But I try to keep each database as small
as possible.

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