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8 The DO_MY_JOB procedure contains the following commands:
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" ) $! SOME PROCESSING HAS BEEN DONE AND THE ) $! PROCEDURE ARRIVES AT ONE OF THE BELOW $! EXIT POINTS. $! $IT_WORK_OKAY: , $ EXIT 1 ! ANY ODD NUMBER SIGNIFIES SUCCESS $! $IT_FAILED: - $ EXIT 0 ! ANY EVEN NUMBER SIGNIFIES FAILURE |
G The EXIT command in the above procedure returns a completion status to G the point of invokation (i.e. the "@" command). The DCL symbol $STATUS @ in the parent procedure is then load with this code. Since that A procedure immediately ends this value is then passed back to the G SCHEDULE System and used as the completion status for the job.
B Certain DCL symbols are automatically established when the job is ? entered into an execution batch queue. The various symbols are:
| Symbol | &Description |
|---|---|
| SCHEDULE_FULL_NAME | job name and directory |
| SCHEDULE_NAME | job name |
| SCHEDULE_SET_ID | current set id. number |
| SCHEDULE_SET_TAG | current set tag value |
| SCHEDULE_SET_PARAMETER | ! current set parameter value |
| SCHEDULE_STEP | current job step |
| SCHEDULE_ENTRY | # scheduling queue entry number |
| SCHEDULE_RESTARTING | 0/1 restarting flag |
| SCHEDULE_RESTART_COUNT | number of restarts done |
| SCHEDULE_RESTART_LIMIT | maximum allowed restarts |
B All the above symbols are entered into the DCL GLOBAL symbol table 6 and are available throughout the execution of the job. < 2.1.4 Jobs with no DCL commands
@ A job that does not have any DCL commands associated with it is F processed through the system in a slightly different fashion from one . that does. Such a job is never entered into an D execution batch queue. These jobs are marked as having successfully * completed whenever execution is requested.
G This type of job is very useful when a more complex scheduling mode is D needed than what is provided by a single job. For example, two data H files are required before a job can execute. A single job can only wait F for a single file. In this case two jobs are defined each one waiting for one file.
A The first job initiates the second job. The first job has no DCL B commands associated with it. All the job commands are part of the G second job. The first job will never be entered into a execution batch H queue. It will however proceed through the various scheduling queues in F a normal fashion. Once both files have been found the second job will ( be entered into a execution batch queue.
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