Re: Partitioning

A little addition to my post:

Of course partitioning downtime will not be that bad if you got spare space to build partitioned table first, transfer data, then do switchover, then transfer data changed meanwhile (using triggers, snapshots or even logminer..).

Note that it is possible to add column "online" using dbms_redefinition package, but this has it's complications as well.

Tanel.

• Original Message ----- To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Tuesday, August 12, 2003 10:14 PM

> Hi!
>
> You can use to_date function in partition by clause on date column.
> But, you'll have downtime for this table anyway, if you want to split
> existing table to partitions.
>
> Tanel.
>
> ----- Original Message -----
> To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com>
> Sent: Tuesday, August 12, 2003 7:04 PM
>
>
> > I have worked with partitioning before but have yet encountered the
> following challenge -
> > The table we are trying to partition is a large table with hundreds of
> millions of rows, which is ok. But it does not have a month column,
although
> it has dates. I would like to partition by month because this table
contains
> years of data and partitioning by days will result in thousands of
> partitions. Of course we can add a month column but I think that will
> require extensive downtime which we can't afford and I suspect it will
cause
> row-chaining as well. So anybody care to share with me any other
> options/suggestions?
> >
> > TIA
> >
> > Dennis
> >
> >
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> Author: Tanel Poder
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-- 
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-- 
Author: Tanel Poder
  INET: tanel.poder.003_at_mail.ee

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