Schema/user/role

Is there any good reference to explain the best usage of each of these structures.
I am coming from Oracle. What is the best analog to Oracle's "user".
Thanks
Dave Roth

> On 03/20/2023 10:15 AM Ron Johnson <ronljohnsonjr(at)gmail(dot)com> wrote:
>
>
> Real-time CDC is the difficult part. ora2pg (using views) can do a static migration. No coding (unless you consider clever use of bash to modify config files to be coding). I used it to migrate a 7TB db to Postgresql.
>
> https://ora2pg.darold.net/
>
> On Mon, Mar 20, 2023 at 8:58 AM Inzamam Shafiq <inzamam(dot)shafiq(at)hotmail(dot)com mailto:inzamam(dot)shafiq(at)hotmail(dot)com > wrote:
>
> > > Hi,
> >
> > Hope everyone is fine.
> >
> > Can someone help or guide regarding Open Source tools for Oracle to PostgreSQL migration with real time CDC. along with this is there any possibility to change the structure of the database? Let me explain a little more,
> >
> > We have an Oracle DB which is around 1TB and we want to migrate to PostgreSQL that have a new table structure, so we want to perform data transformation and real time CDC from Oracle to PostgreSQL. Do we have any good open source tool to achieve this with No Coding involved.??
> >
> > Thanks.
> >
> > Regards,
> >
> > Inzamam Shafiq
> > Sr. DBA
> >
> >
> > >