Processing the XSCAN data set
The XSCAN data set that is created by the XSCAN utility can be used for input into the build, verify, and resynchronize functions.
When processing the verify or resynchronize function, the XSCAN data set can be supplied in the JCL, or it can be accessed by using dynamic allocation. If you want to use JCL to supply the XSCAN data set, specify the DDNAME keyword with the IX subcommand. If you want the XSCAN data set to be dynamically allocated, specify the DSNAME keyword with the IX subcommand. If the DDNAME keyword or the DSNAME keyword is not specified, the default scan of the primary DEDB is used to create the required index information records.
For dynamic allocation, you can use the DISP keyword to control the allocation and disposition of the data set. The DISP=USE status parameter indicates conditional allocation. If the data set does not exist, it is created (as if DISP=NEW had been specified). If the data set already exists, it is reallocated (as if DISP=OLD had been specified). If CATLG is specified, the normal and conditional parameters are changed from CATLG to KEEP.
In addition to the DISP keyword, the UNIT and VOLSER keywords can also be used to control the allocation of a data set. For more information about these keywords, seeFast Path/EP reference documentation.
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