> #### General considerations

> You work with database maintenance jobs just as you do any jobs you create yourself. For example, once an instance of a database maintenance job is created, you can run it immediately or schedule it to run at a later date.

> Keep the following points in mind when working with job instances:

> - By default, the database management jobs are enabled to run as job actions. This option supports job chaining. See the Resource Monitoring Guide for a detailed explanation of job chaining.
> - Database job instances use environment variables common to all jobs, and some that are defined specifically for the type of database maintenance activity you are performing. For information about common environmental variables, see the Resource Monitoring Guide. See the "Environment variables" section for details about environment variables specific to each database maintenance job.
> - All predefined default field values are editable, including the template menu categories.
> - Note that the name of your job cannot contain spaces or the following special characters: %, &, $, #.
> - Required fields on the job's property page appear in red.

> For job instances derived from a database maintenance job template, you can:

> - Access the database maintenance job template either directly from the Job Details Home page or from the Job Templates category in the list frame. Keep in mind that you can only review and edit the template if you access it from the list frame; you cannot set up a job instance of a given template from the list frame.
> - Set up the Job Completion Actions and Alerts page.
> - Review specific job values on the Job Summary page. This page automatically displays once you complete either the Job Properties page or the Job Completion Actions and Alerts page.

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