Re: sybase->postgresql - Mailing list pgsql-general

From Josh Berkus
Subject Re: sybase->postgresql
Date
Msg-id 200402110904.14156.josh@agliodbs.com
Whole thread Raw
Responses Re: sybase->postgresql  ("Jim C. Nasby" <jim@nasby.net>)
Re: sybase->postgresql  (Ashish Mahabal <aam@astro.caltech.edu>)
List pgsql-general
Ashish,

> postgresql you said (I saw this on a list):
> > Also, if you have a *running* Sybase database, conversion is a lot
> > easier ... you can use Perl::DBI to read directly from sybase to a COPY
> > file, and then load the COPY file into Postgres.
>
> I am brand new to postgres and do have a running sybase which I wish to
> convert. I have used perl's DBlib. However, I am not sure how to get the
> output to copy. I will also be sending the question to postgres lists, but
> thought I would send it to you too in case you are able to suggest
> something.

Easiest way?   Use perl to pull from Sybase and build a COPY-formatted file.
Then have perl log into postgres and load the file.   Seems awkward, but it's
actually *much* faster than other methods.   We do this for a 1GB Sybase
database for one client on a nightly basis; takes about 40 minutes.

--
Josh Berkus
Aglio Database Solutions
San Francisco

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