IDS Forum

Re: ontape to disk

Posted By: Art Kagel
Date: Friday, 10 July 2009, at 1:01 p.m.

In Response To: RE: ontape to disk (Schmitz, Rob B[EQ])

The best way is to get TCL and Expect and write an Expect script. Expect is
a scripting language written over TCL that is specifically designed to
control other software. So, it is event driven and you specify what prompts
you are looking for and what the reply should be to each. An expect script
for ontape backups would look something like:

expect "Please mount tape " {

cmd = "mv tapefile tapefile.", fileno;

exec cmd;

exec "touch tapefile"

reply "\n";
}

The syntax isn't exact as I haven't written an Expect script in 8 or 10
years, but that's the idea. This doesn't show opening the pipe running the
ontape, but that's just as easy. Trivial. In y\MY utils_ak package, for my
EVENTALARM program, I wrote a custom module to handle the interaction with
ontape to back up logical logs as they fill. That was before I learned
about Expect. It would have been MUCH easier to embed TCL and Expect in my
program, but...

You can download TCP and Expect from the web. TCL builds easily and Expect
is just a bunch of TCL scripts that implement the event driven parts of the
language (all of TCL is available to Expect scripts as well).

Art

Art S. Kagel
Oninit (www.oninit.com)
IIUG Board of Directors (art@iiug.org)

Disclaimer: Please keep in mind that my own opinions are my own opinions and
do not reflect on my employer, Oninit, the IIUG, nor any other organization
with which I am associated either explicitly or implicitly. Neither do
those opinions reflect those of other individuals affiliated with any entity
with which I am affiliated nor those of the entities themselves.

On Fri, Jul 10, 2009 at 8:55 AM, Schmitz, Rob B[EQ] <
Rob.B.Schmitz@embarq.com> wrote:

> Gustavo,
>
> Thank you for offering to help. I am only having an occasional problem with
> my
> 7.31 instances. The one I am testing is 7.31.UD5, but the problem arises
> from
> having to "mount new tapes" because of the 2 GB file size limit in 7.31. My
> scripts work fine for my 9.40 instances. I also have a script which saves
> the
> logical logs to disk and that works fine. I cannot use ISM because of its
> limitations.
>
> I am interested in learning the approach you used for responding to the
> "Please mount tape " prompts. My problem only occurs once per week, but
> perhaps a different approach would eliminate the problem.
>
> Thanks
>
> Rob Schmitz
> CenturyLink Data Management
> rob.b.schmitz@embarq.com
> www.embarq.com
>
> -----Original Message-----
> From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of
> GUSTAVO
> TOBARES
> Sent: Thursday, July 09, 2009 10:44 PM
> To: ids@iiug.org
> Subject: Re: ontape to disk [16310]
>
> I Rob, what version really you have? I have the same problems years ago
> with
> informix 5.x over SCO Unix (limited to 2GB the file destination).
>
> Can you use ISM? The basic client is free, with some limitations.
>
> I have some scripts to do these job by cron, what you do with the logical
> logs? they are save to disk too?
>
> I think witch I can help you because I have the same problems few years
> ago,
> sorry for my english, I prefer spanish but...
>
> I remember some combination of scripts with redirection for the "mount next
> tape" and compress pipe to reduce the space, and, obviously, the restore
> procedure!
>
>
>
> *******************************************************************************
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>
>
> *******************************************************************************
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>

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Messages In This Thread

• ontape to disk
  Schmitz, Rob B[EQ] -- Thursday, 9 July 2009, at 11:20 a.m.
  • Re: ontape to disk
    Art Kagel -- Thursday, 9 July 2009, at 12:25 p.m.
    • RE: ontape to disk
      Schmitz, Rob B[EQ] -- Thursday, 9 July 2009, at 12:50 p.m.
      • Re: ontape to disk
        Art Kagel -- Thursday, 9 July 2009, at 1:03 p.m.
  • Re: ontape to disk
    GUSTAVO TOBARES -- Thursday, 9 July 2009, at 11:44 p.m.
    • RE: ontape to disk
      Schmitz, Rob B[EQ] -- Friday, 10 July 2009, at 8:55 a.m.
      • Re: ontape to disk
        Art Kagel -- Friday, 10 July 2009, at 1:01 p.m.

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