Re: Migrating from MS Access to oracle

Ken,

In this case it should be easier to use SQL for data cleansing, moving data from stage tables to permanent tables, than to get data out into text files, do cleansing, and then load.

Igor Neyman, OCP DBA
ineyman_at_perceptron.com

• Original Message ----- To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Wednesday, April 09, 2003 3:54 PM

> Igor:
>
> The intermediate tables most likely will not be in the same format as the
> application tables and the data may need to be cleansed / transformed to
fit
> into Oracle. The intermediate tables will reflect the format of the
Access
> / legacy DB.
>
> Ken
>
> ----- Original Message -----
> To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com>
> Sent: Wednesday, April 09, 2003 12:13 PM
>
>
> > Ken,
> >
> > Why would you need SQL*Loader, if data is already in oracle tables?
> >
> > Igor Neyman, OCP DBA
> > ineyman_at_perceptron.com
> >
> >
> >
> > ----- Original Message -----
> > To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com>
> > Sent: Wednesday, April 09, 2003 12:28 PM
> >
> >
> > > Once you get the data into intermediate Oracle tables you can use
> > SQL*Loader
> > > to load the data into the actual Oracle tables that will be used by
the
> > > application. If you are going to go this route I recommend O'Reilly's
> > book:
> > > SQL*Loader: The Definitive Guide.
> > >
> > > Ken Janusz, CPIM
> > >
> > >
> > > ----- Original Message -----
> > > To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com>
> > > Sent: Wednesday, April 09, 2003 10:28 AM
> > >
> > >
> > > > Sam - I haven't done this, tried to stay away from Access. What I've
> > seen
> > > > posted from those who have, create equivalent tables in Oracle to
> match
> > > the
> > > > Access tables, then use Access to connect to these tables. Then you
> can
> > > > simply copy records from the Access tables into the Oracle tables.
> > Access
> > > > can create the tables in Oracle, but that isn't a good idea because
> > Access
> > > > will tend to use goofy data types like LONG. My suggestion would be
to
> > use
> > > > this method to get the data into some temporary tables in Oracle,
then
> > > move
> > > > the data around into your permanent tables using SQL. Maybe someone
> with
> > > > Access experience will post better ideas.
> > > >
> > > > Dennis Williams
> > > > DBA, 40%OCP, 100% DBA
> > > > Lifetouch, Inc.
> > > > dwilliams_at_lifetouch.com
> > > >
> > > >
> > > > -----Original Message-----
> > > > Sent: Wednesday, April 09, 2003 12:34 AM
> > > > To: Multiple recipients of list ORACLE-L
> > > >
> > > >
> > > > Hi List,
> > > > I would like your views on migrating from Microsoft
> > > > Access to Oracle8i.
> > > > Folloing is one of the scenarios that we might come
> > > > across.
> > > > There are columns in table need to insert as a row.
> > > > e.g. Access Table1 has column col1,col2,col3
> > > > we need to insert those col1 as row1 ,col2 as row2 of
> > > > Oracle table.
> > > > 1.Can this be done using sql loader ?
> > > > 2.What are the typical limitations u experienced of
> > > > sql loader ?
> > > > 3.What are other ways to migrate (i.e. other than sql
> > > > loader)and also validate migrated data.
> > > >
> > > > I will appreciate any comments and views.
> > > >
> > > >
> > > > Platform:Oracle8i,MS Access 2000
> > > > O.S.:Win2000.
> > > >
> > > >
> > > > Thanks
> > > > Sam
> > > >
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Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Igor Neyman
  INET: ineyman_at_perceptron.com

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