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Home -> Community -> Usenet -> c.d.o.server -> Re: Replication from Sybase Anywhere into Oracle7
Ståle Oddsen wrote:
> I need to set up a replication from a sybase sql anywhere6 database into
> a oracle7.3.4 db.
>
> Anyone got a good idea on how to go about this?..
I had to find this out myself for Oracle <-> MS-SQL. You have several options:
- Snapshots --> simple, but resource demanding - Synchronous replication (2-phase commit) --> simple, but dependent of server availability - Asynchronous replication --> difficult, but network configuration independant
If you need one-way replication (master/slave relation between servers) then you can probably use snapshots. This, of course, depends on the amount of data that has to be replicated. As you noted in your post, a firewall is in between the servers. This will probably give the second solution a lower score, because in a two-phase commit situation you need to be absolutely sure that both servers are up and running. Otherwise, a simple transaction will fail. As both servers are from different suppliers, an asynchronous replication schema is only applicable if third-party software is available to implement this. The advantage of this schema is that it is independent of the availability of one of the servers, as transactions are transported at a regular interval to the other server. If the server is down, the transport is delayed and restarted at a later date. Look for third-party software at:
http://www-internal.amdahl.com/doc/products/storage/gis/xmm002605.html http://www.datamirror.com/products/ http://www.praxisint.com/dsor.html
If those products are too expensive, you can probably implement your own trigger-schema, when the number of tables is not too big.
Greetings from Amsterdam,
Remco Moolenaar
--
Remco Moolenaar mailto:remco_at_scc.nl SCC Internetworking & Databases http://www.scc.nl/Amsterdam, The Netherlands Received on Fri Aug 20 1999 - 01:36:11 CDT
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