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RE: Re[2]: Compressing Export Dumps

From: Simon Waibale <waibals_at_mtn.co.ug>
Date: Sat, 18 May 2002 03:03:18 -0800
Message-ID: <F001.00463F93.20020518030318@fatcity.com>


Hi Sergey and all,
Tried to impliment the on-the-fly gzip but some breakages!! I created 7 different pipes and 7 different export jobs. The first job run manually completed successfuly but all the croned jobs are stuck -the daemon fired them off but nothing is taking place! The Log files are empty and the zipped dumps are no where to be seen! A "ps -ef|grep exp" shows that the jobs are active. It's now coming to 10 Hrs.
Any known issues with multi-occurences of pipe-files/gzip etc ?

Thanks

-----Original Message-----
Sent: Friday, May 17, 2002 5:18 AM
To: Multiple recipients of list ORACLE-L

Hello Simon,

The command mknod p does the same thing as mkfifo (it just calls mknod p).
I did large exports many times using gzip. So, it's your decision whether to use compress or gzip. I did not have any troubles at all. You don't have to remove the pipe and can easily reuse it whether you want.

Thursday, May 16, 2002, 8:43:25 PM, you wrote:

SW> Sergey,
SW> Thanks for the mkfifo idea. I've also come across "mknod myfifo p;compess <
myinfo >> myinfo.Z"
SW> I'm looking at the two options, yet to ascertain whether second method works
SW> with gzip.
SW> Do you know of any known troubles (Block/File corruption) with first method ?
SW> Do I have to "rm yourinfo" or I can re-use the piping file ( as in ascript) ?

SW> Thanks once again,
SW> Simon

SW> -----Original Message-----
SW> Sent: Thursday, May 16, 2002 2:48 PM
SW> To: Multiple recipients of list ORACLE-L


SW> Hello Simon,

SW> You can make it like this:

SW> mkfifo yourfifo
SW> gzip <yourfifo >outfile.dmp.gz &
SW> exp ... file=yourfifo
SW> rm yourfifo





SW> Thursday, May 16, 2002, 4:38:40 PM, you wrote:

SW>> Hi all,
SW>> My export dumps are too big (80 GB) for my filesystem and I'm looking for

SW> a
SW>> way 
SW>> to compress them on the fly -ie without taking *.dmp to disk first but
SW>> straight *.dmp.gz
SW>> Anybody with an idea on how to archive this ?
SW>> Thanking you,

SW>> ---
SW>> CSW  
--

Best regards,

 Sergey                            mailto:dsv_at_pptus.oilnet.ru


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Author: Sergey V Dolgov
  INET: dsv_at_pptus.oilnet.ru

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Author: Simon Waibale
  INET: waibals_at_mtn.co.ug
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