It is currently Tue, 17 May 2022 18:24:11 GMT



 
Author Message
 Named Pipes
Hi,

I am trying to unzip a file (that is over 2GB) into a named pipe and then
import some tables from that named pipe. However, HP-UX that I have has 2GB
file size limit. Do you have any idea how to work out this problem with big
file names?

P.S. Before I've tried to unzip with the -p option and redirect the output
to the named pipe. Didn't work. :-(

Thanks in advance!



 Tue, 14 Oct 2003 00:11:10 GMT   
 Named Pipes

I don't know about HP-UX's implementation of named pipes (fifos), but other
implementations I've seen have a size limit that is much smaller than the max
file size limit.

From your description, you are using the named pipe to do the same work as a
regular file. What does a named pipe buy you over a regular file in this case?

Lew Pitcher
IT Consultant, Development Services
Toronto Dominion Bank Financial Group

(Opinions expressed are my own, not my employers')



 Tue, 14 Oct 2003 00:26:13 GMT   
 Named Pipes
Space saving probably for massive amounts of data.


 Tue, 14 Oct 2003 01:09:34 GMT   
 Named Pipes
In article <xMXF6.2033$sl5.126...@paloalto-snr1.gtei.net>,

The problem sounds like it's with the application that's trying to read
from the named pipe.  If it needs to seek randomly in its input file, it
won't work with a pipe, since they only support sequential access.

So you need to give us more details about how you're trying to use the
data.

--
Barry Margolin, bar...@genuity.net
Genuity, Burlington, MA
*** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to newsgroups.
Please DON'T copy followups to me -- I'll assume it wasn't posted to the group.



 Tue, 14 Oct 2003 02:59:58 GMT   
 Named Pipes
In comp.unix.misc Fayerman <i...@fayerman.org> wrote:

Why don't you install a more recent OS that has no 2Gb file size limit
( freebsd comes to my mind) on a PC with a 4Gbyte disk, unzip the
file here, and move it to you hp ?  The whole process would be done
in a few hours, and you will have introduced yourself to A Brand New World.

/PS
unzip in included in the distro, just select it in "packages" manue
/DS

--
Peter H?kanson        
        IPSec  Sverige      (At the Riverside of Gothenburg, home of Volvo)
           Sorry about my e-mail address, but i'm trying to keep spam out.
           Remove "icke-reklam"and "invalid"  and it works.



 Tue, 14 Oct 2003 19:45:46 GMT   
 Named Pipes
Hello All,

This is because Unix will break the unzip process on the files that are over
2 GIGS before it's done! In other words, the unzip process won't be
successful. Didn't I tell that? We use this named pipe to zip into it in
order to get parts of the file little by little.

Thanks.

P.S. This is ASAP, if possible.

news:3ae84ccc.638881@news21.on.aibn.com...



 Tue, 14 Oct 2003 21:39:16 GMT   
 Named Pipes
The purpose of the export proccess I am trying to achieve is to recover some
tables from the data file that is about 3.5 Gigs.

news:Oe_F6.17$EE6.516@burlma1-snr2...
group.



 Tue, 14 Oct 2003 21:41:32 GMT   
 Named Pipes
In article <gGeG6.261$dT1.45...@dfiatx1-snr1.gtei.net>,

What I meant was "tell us the program you're using to read from the named
pipe".

--
Barry Margolin, bar...@genuity.net
Genuity, Burlington, MA
*** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to newsgroups.
Please DON'T copy followups to me -- I'll assume it wasn't posted to the group.



 Wed, 15 Oct 2003 02:34:16 GMT   
 Named Pipes
Oracle export.

news:IYiG6.63$EE6.1857@burlma1-snr2...
group.



 Thu, 16 Oct 2003 12:28:39 GMT   
 Named Pipes

you mean `import?'  You're reading the fifo with export?

--
J. S. Jensen, Cu.H.
mailto:jsjen...@saba.com
http://www.saba.com



 Fri, 17 Oct 2003 09:41:30 GMT   
 
   [ 10 post ] 

Similar Threads

1. Help needed pipes and named pipes

2. named pipes and pipes in general

3. Regular pipe vs. Named Pipe

4. Any compatibility between Unix Named Pipes and NT Named Pipes??

5. DOSemu in background and named pipes

6. Manual pages changed to named pipes!

7. Named Pipes for remote storage

8. named pipes over NFS


 
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group.
Designed by ST Software