topic Re: Linking a file on different server. in Operating System - HP-UX

Linking a file on different server.

Gulam Mohiuddin — Mon, 26 Nov 2001 16:16:51 GMT

We have two servers ServerA and ServerB, the Oracle from ServerA writes a file in /utl_file/gis/gis.dat file. Now Oracle on SererB wants to read this file. For this we have a daily cron job which copies gis.dat file from ServerA and paste into the similar directory structure in ServerB at /utl_file/gis/gis.dat.

Is it possible to avoid this cron job and somehow link the ServerA:/utl_file/gis/gis.dat to ServerB:/utl_file/gis/gis.dat so that Oracle on ServerB can read it anytime.

Thanks,

Gulam.

Re: Linking a file on different server.

harry d brown jr — Mon, 26 Nov 2001 16:19:01 GMT

With an NFS mount you can access a file on serverA from ServerB, but unfortunately not via "ln".

live free or die
harry

Re: Linking a file on different server.

Kurtkarl — Mon, 26 Nov 2001 16:22:33 GMT

HI,

Would suggest to share server A directory to server B as it's local directory using NFS. This way it would prevent you from running cronjobs. Let me know if you need some guidelines how to make this as NFS dir.

Joey

Re: Linking a file on different server.

Sanjay_6 — Mon, 26 Nov 2001 16:23:07 GMT

Hi Gulam,

Don't think you can do that until you mount the remote directory as a NFS filesystem. If you do so, you can use "ln" to link the file.

Hope this helps.

Regds

Re: Linking a file on different server.

Darrell Allen — Mon, 26 Nov 2001 16:24:09 GMT

Hi Gulam,

The following thread seems similar to your issue:

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x7bc9f715edc6d5118ff10090279cd0f9,00.html

You might want to look into rdist or if you want to send files both ways, rsync. Both are available at HP software porting and archive centers. One is http://hpux.cs.utah.edu/

Darrell

Re: Linking a file on different server.

Uday_S_Ankolekar — Mon, 26 Nov 2001 16:24:28 GMT

Hi,

NFS as a local mount would be the best way to do it.

-USA..

Re: Linking a file on different server.

Bernie Vande Griend — Mon, 26 Nov 2001 16:31:47 GMT

Your only option to link them would be to use NFS and mount the filesystem/directory on the other server.
I am not a fan of NFS though and would not recommend doing this is this was the only reason you needed NFS. NFS has security concerns, can lead to reliability issues if the NFS server machine goes down or is having problems. It also doesn't work well over a WAN unless the connection is very fast and consistent.
There is a neat little perl script called Mirror that I would probably use for this. It checks files or directories on 2 servers and keeps them in sync.
ftp://src.doc.ic.ac.uk/computing/archiving/mirror/