RE: Data Pump and compress on the fly in Unix

Hmm, I’ve never noticed that note – is it the kind of not supported as in “don’t call us for help in using named pipes” or the kind of not supported as in “if you use this it won’t work”

I’m not even convinced Oracle’s software can tell the difference between a stream of bytes from a named pipe and a stream of bytes from a file.

That transparency is why Kemeny and Kurtz called them communications files and noted that every data source and every data sink is a file. I’m moderately sure D. Ritchie followed that lead when building UNIX, but sometimes I mis-remember things.

Another possible confusion is whether Oracle’s note was about Unix named pipes or what a company convicted of restraint of trade also called named pipes.

Have you got a reference to that note? I’d sure like to read it and try to figure out when in the gap between 1988 when Oracle specifically recommended using named pipes to me and now they desupported them. Of course that was export, not datapump, but I still can’t quite grok how their software would be able to figure out the difference in the source of the bytes.

Regards,

mwf

-----Original Message-----

From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org]On Behalf Of rjamya
Sent: Wednesday, January 10, 2007 5:33 PM To: Mark W. Farnham
Cc: mark.powell_at_eds.com; oracle-l_at_freelists.org Subject: Re: Data Pump and compress on the fly in Unix

yes and oracle has a note saying that 'it is not supported'.

Rjamya

On 1/10/07, Mark W. Farnham < mwf_at_rsiz.com <mailto:mwf_at_rsiz.com> > wrote: Have you considered or tried named pipes?

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http://www.freelists.org/webpage/oracle-l Received on Wed Jan 10 2007 - 17:19:53 CST