With the online save FDDRL offers the option of saving the home pubset during ongoing operation. An online save can be considered when the home pubset has no mirror disks which are available for a save and it is not possible or desirable to interrupt system operations to save the home pubset.
The online save is called in the DUMP-PUBSET or COPY-PUBSET statement using the PUBSET=*HOME(...) operand. The following control options are available here:
Specification of an alternative default pubset (DEFAULT-PUBSET operand)
As the home pubset is also always the default pubset for the user ID TSOS, the SYSOUT logs of the FDDRL subtasks and the job variables for recording the tape VSNs are also contained on the home pubset. Consequently the SYSOUT log is disabled when an online save takes place and the job variables are not updated during the runtime, but only at the end of the save.
A different pubset can optionally be specified for the logs and job variables. This permits logging and updating of the job variables to continue during the online save.Time limit for the write lock (TIME-LIMIT operand)
The write lock which is set for the home pubset during the save is canceled when the save terminates, and at the latest when the specified time limit is reached (default: 5 minutes).