Re: Will This Work?

> From: pgsql-novice-owner(at)postgresql(dot)org [mailto:pgsql-novice-owner(at)postgresql(dot)org] On Behalf Of Gene Poole
> Sent: Wednesday, September 11, 2013 4:11 PM
> To: pgsql-novice(at)postgresql(dot)org
> Cc: jpdsys2(at)comcast(dot)net; etpoole60(at)comcast(dot)net; jpdsys7(at)comcast(dot)net; etpoole64(at)gmail(dot)com; etpoole6465(at)gmail(dot)com
> Subject: [NOVICE] Will This Work?
>
> When I create a Oracle 11gR2 database we initially use the netca and dbca utilities to create the basic database files and network connections. Afterwards we run a bash script to create the application database detail files. We use this bash script to define certain files on specific raid-1 file systems.
> How would we do this using PostgreSQL? What is the version of PostgreSQL you would suggest running on RHEL 5.9 x86_64? If I wanted to move from Oracle to PostgreSQL is it possible to use a Oracle export DMP file to load the PostgreSQL database?
>
> Thanks,
> Gene Poole

My co-worker and I ported our application from Oracle to PostgreSQL.

I can't answer your questions about netca or dbca created configuration files. I never really used either of those tools.

We started from scratch with everything which is both a blessing and a curse (mostly a blessing). Obviously, it look us longer than if we had used ora2pg or another tool to port the table structures. Now we have a better grasp of what PostgreSQL can and cannot do. We were able to use PostgreSQL features that Oracle lacked. Also our stored functions are much cleaner since they were all rewritten from scratch at the same time.

We are also using RHEL 5.9 x86_64. We could have used the RPM's provided by the community but instead chose to install from source because it gives us more flexibility (our own version of Perl, binaries and data where we want them, etc). We started with 9.0 but switched to 9.1 partway through our conversion. We're running 9.2 now and will be moving to 9.3 soon. If I were in your shoes, I would start with 9.3.

No, as far as I know, there is no way to use an Oracle dump file to load the PostgreSQL database.

HTH,
Matt

Matthew Musgrove
EF Johnson Technologies, Inc.
Senior Software Engineer
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