Migration Oracle multitenant database to PostgreSQL ?

2020-11-24 Thread ROS Didier
Hi
I would like to know if it is possible to migrate Oracle multitenant 
database (with multiple PDB) to PostgreSQL ?

Thanks in advance

Best Regards

D ROS
EDF



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Re: Migration Oracle multitenant database to PostgreSQL ?

2020-11-24 Thread Thomas Kellerer


ROS Didier schrieb am 24.11.2020 um 09:09:
> I would like to know if it is possible to migrate Oracle multitenant
> database (with multiple PDB) to PostgreSQL ?
Postgres' databases are very similar to Oracle's PDBs.

Probably the biggest difference is, that you can't shutdown
a single database as you can do with a PDB.

Database users in Postgres are like Oracle's "common users", they are
global for the whole instance (aka "cluster" in Postgres' terms). There
are no database specific users.

Thomas









Re: Migration Oracle multitenant database to PostgreSQL ?

2020-11-24 Thread Bruce Momjian
On Tue, Nov 24, 2020 at 09:22:26AM +0100, Thomas Kellerer wrote:
> 
> ROS Didier schrieb am 24.11.2020 um 09:09:
> > I would like to know if it is possible to migrate Oracle multitenant
> > database (with multiple PDB) to PostgreSQL ?
> Postgres' databases are very similar to Oracle's PDBs.
> 
> Probably the biggest difference is, that you can't shutdown
> a single database as you can do with a PDB.

I guess you could lock users out of a single database by changing
pg_hba.conf and doing reload.

> Database users in Postgres are like Oracle's "common users", they are
> global for the whole instance (aka "cluster" in Postgres' terms). There
> are no database specific users.

Good to know.

-- 
  Bruce Momjian  https://momjian.us
  EnterpriseDB https://enterprisedb.com

  The usefulness of a cup is in its emptiness, Bruce Lee