ENHANCED DATA CENTER
OPERATIONS
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An efficient production environment is vital to the smooth operation of
a data center. Jol provides the following powerful features to
achieve this end.
- On-line Data Entry For Job
Submission: Jol enables
the Users to create 'PANELS' or
pre-formatted screens to allow data to
be input to Jol. Effective use of this feature can insulate the
User from most of the tiresome details of entering information
pertinent to a job(s), and at the same time, provide an efficient low
overhead method of doing so. Facilities are provided to display
text; display text and allow replies to be entered; and to display text
with default replies.
- Calendar Facility: Jol
has an in-built calendar which
can be used to select jobs or parts of jobs on particular days, dates,
months, or years.
- Error Detection And Job
Validation: Jol applies a
comprehensive set of validation checks to all jobs. In addition
to the normal syntax checks which are applied to each Jol statement,
the internal consistency of the complete job procedure is
examined. If inconsistencies are detected, then Jol either
corrects the procedure or does not submit the job for execution.
- The validation procedures used by Jol are oriented toward
the total job rather than toward individual steps. This
eliminates the situation in which machine time used in earlier job
steps is wasted due to a control language error in a later step.
- The comprehensive validation and error detection procedures
of Jol are supported by clear and informative diagnostic
messages. This ensures that if errors do occur, then corrective
action can be taken quickly with minimal effort.
- Rerun/Restart
Facility: Jol, by using symbolic
variables, provides simple instructions to allow total flexibility in
organizing restarts. This facility allows the job to commence
execution at a point other than the beginning of a job.
Additionally, execution of a job can be stopped at any point other than
at the end of a job.
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- Standards Enforcement:
Jol provides the means for
consistent enforcement of standards and for the level of enforcement
required. User supplied routines can be incorporated into the Jol
processor when it is generated. Jol makes available to these
routines all the job control information pertinent to a particular
job. These routines can examine this information and override any
element if necessary.
- Communication
Ability: Jol provides the facility to
communicate with the Operator and User and to place messages on the
system log of the job. This communication may be in the form of a
simple instruction or may request a specific reply.
- Easy Overriding:
Any Jol definition can be
overridden. To override the job, program, data set, and symbolic
definitions, another definition is simply coded before the existing
definition. The first definition is given preference. In
some cases no modification of the Jol text may be required at all.
- Similarly, generic changes resulting from alterations in
the specifications of a public or shared program may optionally be
accomplished by changing a catalog text in the Jol 'INCLUDE' library or
by changing a macro prototype in the Jol 'MACRO' library.
- Using Backup Computers:
The global changes necessary
when processing is transferred to a back-up machine with a different
hardware configuration can be performed automatically by the Jol
processor.
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