Re: comparing with oracle

On Mon, Dec 15, 2003 at 20:03:54 -0800,
  sachdev@dacafe.com wrote:
>  Hi,
> I was able to migrate the Oracle database to Postgres, including
> functions, procedures. Thanks to ora2pg script and postgres documentation
> on porting from  oracle to Postgres.
>
> I have now two tuff task. We are running Oracle in stadby mode and apply
> archive logs at remote place to maintain our DR site. Is there any way I
> can  generate archive logs.?

You would need to look at one of the replication solutions. I don't know
lot about them.

> I need to know postgres datacrash recovery techniques also. If the
> database crashes  we have around 25Gb of data, is there any way apart from
> restoring the full back up?

It depends on what kind of crash. If the machine unexpectedly shutdown,
then should be able to just start the server back up. If you lost a hard
drive then you will need to restore from backup. Note that backing up the
data directory while the postmaster is running will not give you a usable
backup. You either need to use pg_dump or you need to do a backup while
the postmaster is shutdown. There is no point in time recovery available
at this time.