cron job and batch job????
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Thread: cron job and batch job????

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  1. #1
    Join Date
    Jan 2001
    Posts
    157

    Question

    What's the difference between running a job as a cron job and a batch job?

  2. #2
    Join Date
    Jun 2000
    Location
    Madrid, Spain
    Posts
    7,447
    cron job is programmed, batch job is doing loads of tasks in a go.
    they are both related because normally you program batch jobs with cron and to execute them in an hour when the activity is low (early morning like 2 am to 4 am for example depending your company)
    cron jobs can be batch jobs, backups, monitoring etc
    batch jobs can be mass data loading, mass updating etc

  3. #3
    Join Date
    Nov 2000
    Posts
    89
    "cron" is usually mentioned as a Unix utility- which basically calls a script or a "one-liner" at any given time or interval listed in your crontab. I'm not sure if the actual cron program is available for NT- I just use Unix.

    So ... if you have a unix box just try the man page:

    %man cron

    You may try:

    %crontab -l

    Which will list the current cronjobs for the current user.

    %crontab -e

    will edit the crontab. Make sure you do a:

    export EDITOR=vi

    so that cron knows which editor you use.

  4. #4
    Join Date
    Aug 2000
    Location
    Belgium
    Posts
    342
    Another difference between a 'crontab'-job and an 'at'-job.

    When you issue a job using at, the unix-environment is automatically put in the job. eg. when you have set your oracle environment, and you start a job using at, automaticly you have the right oracle settings.

    When you issue a job using crontab, you have to set the environment in the script. That's why I always begin a crontab job with
    . /etc/profile
    . $HOME/.profile

    Regards
    Gert

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