If a job terminates abnormally, the checkpoint/restart facilities allow you to restart the job, as follows:如果工作异常终止，检查/重新启动设施让您重新启动的工作，具体情况如下：
* Automatic step restart, that is, restart by the system from the beginning of a job step.自动重新启动的步骤，也就是重新启动该系统从一开始的工作步骤。
* * Automatic checkpoint restart, that is, restart by the system from a checkpoint within a job step.自动检查点重新启动，也就是重新启动了系统内的一个检查站的工作步骤。 *
* Deferred step restart, that is, restart at a later time from the beginning of a job step.递延步骤重新启动，也就是说，重新启动在稍后时间从开始工作的第一步。 *
* Deferred checkpoint restart, that is, restart at a later time from a checkpoint within a job step.递延检查站重新启动，也就是说，重新启动在稍后的时间内从一个检查站的工作步骤。
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Restarts are controlled by:重新启动控制：
* RD parameters on JOB and EXEC statements.路参数对工作和主管的发言。 (Restart is not supported for started tasks; do not use the RD parameter on the JOB statement for a started task.) （重新启动，不支持开始任务;不使用的RD参数就业声明的开始工作。 ）
* * Checkpoints, if written.检查站，如果书面。 Each time a CHKPT macro is executed, a checkpoint is written.每一次CHKPT执行宏观调控，是写一个检查站。
* * The job journal, which is only required for an automatic restart.杂志的工作，只需要自动重新启动。 In a JES3 system, the programmer can code a JOURNAL parameter on the JES3 //*MAIN statement to control whether JES3 creates a journal for the job.在JES3系统，程序员可以代码期刊参数对JES3 / / *主要发言控制是否JES3创造了杂志的工作。
* * In deferred restarts, a RESTART parameter on the JOB statement for the restarting job and a SYSCHK DD statement to identify the data set containing the checkpoint written in response to the CHKPT macro.递延重新启动，重新启动参数对就业报表重新就业和SYSCHK日的声明，以确定数据集包含检查书面响应CHKPT宏。 (Restart is not supported for started tasks; do not use the RESTART parameter on the JOB statement for a started task.) （重新启动，不支持开始任务;不使用参数重新就业的声明开始的任务。 ）
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Use of Restart : Either form of restart saves having to execute the job from its beginning. 使用重新启动 ：任何形式的重新启动节省了执行工作从一开始。 If the job is long, restarting can save a lot of time and computer resources.如果是长期的工作，重新启动可以节省大量的时间和计算机资源。
For more information about restarting, see DFSMS/MVS Checkpoint/Restart .欲了解更多有关重新启动，见DFSMS /泡点/重新启动 。
RD parameters on JOB and EXEC statements. (Restart is not supported for started tasks; do not use the RD parameter on the JOB statement for a started task.)
Checkpoints, if written. Each time a CHKPT macro is executed, a checkpoint is written.
The job journal, which is only required for an automatic restart. In a JES3 system, the programmer can code a JOURNAL parameter on the JES3 //*MAIN statement to control whether JES3 creates a journal for the job.
In deferred restarts, a RESTART parameter on the JOB statement for the restarting job and a SYSCHK DD statement to identify the data set containing the checkpoint written in response to the CHKPT macro. (Restart is not supported for started tasks; do not use the RESTART parameter on the JOB statement for a started task.)
