Thread: transfer data from oracle to postgres
Is there an easy way to transfer DATA from an oracle database to a postgres database (tables are already created)? As far as I can tell the oracle export creates a binary file. I could write a script, but it would be a bit tedious. I imagine it has already been done? I searched the archives and docs and the web, but the archives are coming up quite right on my browser and I didn't find any good suggestions. thanks, Sarah smarie@ekno.com ____________________________________________________________________________ Lonely Planet's ekno - more than a phonecard Get ekno before you go! http://www.ekno.lonelyplanet.com
Hi Sarah, These is some information about converting from Oracle to PostgreSQL here: http://techdocs.postgresql.org/ On the front page there is a section called "Converting from other Databases to PostgreSQL" and there is information there about converting from Oracle to PostgreSQL. Under the category of "Non-specific", there is a link to a conversion guide by the pgAdmin development team which might also prove to be useful (not sure). Hope that helps. :-) Regards and best wishes, Justin Clift s wrote: > > Is there an easy way to transfer DATA from an oracle database to a > postgres database (tables are already created)? As far as I can tell > the oracle export creates a binary file. I could write a script, but > it would be a bit tedious. I imagine it has already been done? > > I searched the archives and docs and the web, but the archives are > coming up quite right on my browser and I didn't find any good > suggestions. > > thanks, > > Sarah > smarie@ekno.com > > ____________________________________________________________________________ > Lonely Planet's ekno - more than a phonecard > Get ekno before you go! > http://www.ekno.lonelyplanet.com > > ---------------------------(end of broadcast)--------------------------- > TIP 4: Don't 'kill -9' the postmaster -- "My grandfather once told me that there are two kinds of people: those who work and those who take the credit. He told me to try to be in the first group; there was less competition there." - Indira Gandhi
> > Is there an easy way to transfer DATA from an oracle database to a > postgres database (tables are already created)? As far as I can tell > the oracle export creates a binary file. I could write a script, but > it would be a bit tedious. I imagine it has already been done? > > I searched the archives and docs and the web, but the archives are > coming up quite right on my browser and I didn't find any good > suggestions. There's a ora2pg script in the postgres contrib directory which you can use. A more updated versionis available from http://www.samse.fr/GPL/ora2pg/. It's pretty good but it does not do CLOB/BLOB data and it doesn't see synonyms either. Cheers, Graeme
s wrote: > Is there an easy way to transfer DATA from an oracle database to a > postgres database (tables are already created)? As far as I can tell > the oracle export creates a binary file. I could write a script, but > it would be a bit tedious. I imagine it has already been done? > > I searched the archives and docs and the web, but the archives are > coming up quite right on my browser and I didn't find any good > suggestions. There is the ora2pg perl script. But I chose to do this manually. It's easy to do some Oracle metadata queries and create statements that suck the entire table. You could do that even in Oracle SQL*Plus if it wasn't so stupid about trying to format an ASCII table, etc. In the end the delimiter-escape problem forced me to just make a quick Java/JDBC program. You can stream the reocrds right into a pgsql COPY FROM command. Streaming is useful if your tables are BIG (mine are.) I also put some counter in the middle that shows me the progress. I noticed that PostgreSQL could pump data in as fast as I could read it from the Oracle server. 300 to 1500 records per second was the normal range. regards -Gunther -- Gunther Schadow, M.D., Ph.D. gschadow@regenstrief.org Medical Information Scientist Regenstrief Institute for Health Care Adjunct Assistant Professor Indiana University School of Medicine tel:1(317)630-7960 http://aurora.regenstrief.org