1. Create a Pipe , say usr1.pipe. A pipe is a FIFO structure.
/bin/rm /dsk1/usr1.pipe
/bin/mknod /dsk1.usr1.pipe p
( See your version of UNIX - mknod differs in its usage - i mean the syntax
- some strains require that u mention -p )
2. Let compress listen at one end of the pipe.
cat /dsk1/usr1.pipe |compress >/dsk9/usr1.dmp.Z &
In the above step while making compress listen to one end of the pipe -
you are also sending its output to a different file.
So, compress captures data at one end of the pipe and as and when it
encounters data it compresses it and sends it to an output file. Make sure
to run it in background.
3. Now do an export - in place of the export dump file mention the pipe. By
doing this exp will be putting data at one end of the pipe ( and compress
will be taking data at the other end)
exp / file=/dsk1/usr1.pipe buffer=64000 2> usr1.log
While importing, In a similar fashion, let uncompress listen at one end
while imp TAKES data at the other end.
Rajaram
The value of an idea lies in the using of it. - Thomas Edison
-----Original Message-----
From: Armstead, Michael A [SMTP:[EMAIL PROTECTED]]
Sent: Wednesday, May 16, 2001 4:04 PM
To: '[EMAIL PROTECTED]'
Cc: '[EMAIL PROTECTED]'
Subject: RE: Export Split Script
Rajaram,
Please give me details on how to use mknod to split export files larger
than
2 GB. We have broken our jobs into over 50 separate export jobs on the
table
level just to keep our files less than 2GB.
Michael Armstead
Application Database Administrator, OCP-Certified
US Pharmaceuticals IT
Glaxo SmithKline
> -----Original Message-----
> From: Rajaram [SMTP:[EMAIL PROTECTED]]
> Sent: Wednesday, May 16, 2001 4:31 PM
> To: Multiple recipients of list ORACLE-L
> Subject: RE: Export Split Script
>
> If you are using Oracle on Unix , You may want to use unix pipes (
mknod).
> - most people use this method to manage files > 2GB.
>
> Rajaram
> (Now that I am at the top of a mountain - I dont know how to get down!)
>
> -----Original Message-----
> From: Smith, Ron L. [SMTP:[EMAIL PROTECTED]]
> Sent: Wednesday, May 16, 2001 3:57 PM
> To: Multiple recipients of list ORACLE-L
> Subject: Export Split Script
>
> I tries using a compressed export and the output is still over 2G. Does
> anyone have the export script that splits the export files into multiple
> files?
>
> Ron Smith
> Database Administration
> [EMAIL PROTECTED]
>
>
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> Author: Rajaram
> INET: [EMAIL PROTECTED]
>
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Author: Rajaram
INET: [EMAIL PROTECTED]
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