Re: Information on Reorganizing Large Tables on 8i and 9i

Hi,

Thanks for the information.

The main reason behind the reorganization will be to save disk space (Yes, disk space is cheap..but that is the nature of the request). The data will likely be deleted using SAP archiving techniques.

As a matter of fact, I may be allowed to save disk space even at the expense of performance, to a reasonable extent. (Changing PCTFREE and PCTUSED, etc..).

I am not sure what the maint. windows will be.

Thanks,
SAP BASIS Consultant

andreyNSPAM_at_bookexchange.net (NetComrade) wrote in message news:<4071c72d.1482811700_at_localhost>...
> The only reason i would do a 'reorganize' is
> 1) i need to delete large chunks of it (go to partitions)
> 2) i need to backup/restore quicker (go to partitions)
> 3) i have a lot of chained rows in tables (exp/imp and set proper
> pctfree/pctused afterwards)
>
> Are you trying to improve performance of tables or performance of
> reorganizing (do you have maint windows available?)
>
> On 5 Apr 2004 11:52:33 -0700, basis_consultant_at_hotmail.com (SAP BASIS
> Consultant) wrote:
>
> >Hello,
> >
> >Thanks to all those who took the time to answer my previous question
> >regarding the rebuilding of online indexes.
> >
> >I have reorganized small and medium sized tables (Say, up to 500MS or
> >so) in Oracle 7.x, 8.0.x, and 8.i.
> >
> >Now, it looks like I will be doing so with larger tables (Say, 1GB to
> >10GB+) on AIX. The tables will likely be composed mainly (Or all) of
> >VARCHAR fields; Few, if any, will have LOBs.
> >
> >(Yes, I understand that my artibrary concept of small, medium-sized,
> > and large tables my be differ from other peoples'....)
> >
> >I tried to find some documentation, both online and in a bookstore,
> >regarding issues associated with reorganizing large tables (How to
> >improve performance, prevent potential problems, etc..), but I did
> >not find much.
> >
> >Does anybody recommend any Website, article, or book dealing with
> >these issues?
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >Thanks,
> >SAP BASIS Consultant
>
> .......
> We use Oracle 8.1.7.4 on Solaris 2.7 boxes
> remove NSPAM to email
Received on Tue Apr 06 2004 - 12:12:18 CDT