Rational Developer for System z, Version 7.6

Allocating data sets and working with remote files

To allocate a data set, follow these steps:
  1. Make sure that you are connected to the remote system and are working in the z/OS® Projects perspective.
  2. Select The MVS™ Files subsystem or the MVS subproject in which to allocate the PDS:
    • In the Remote Systems view, expand the remote system where you want to allocate the data set and select MVS Files.
    • In the z/OS Projects view, select an MVS subproject.
  3. Open the New Data Set wizard:
    • In the Remote Systems view, right-click and click Allocate Sequential Data Set or Allocate PDS.
    • In the z/OS Projects view, right-click and click New > Allocate Sequential Data Set or New > Allocate PDS.
    The rest of thee instructions use Allocate PDS as an example.
  4. On the Allocate PDS page, do these tasks:
    1. Accept the name that is provided in the Host Short Name field.
    2. Select the high-level qualifier for the data set from the drop-down list.
    3. In the Data Set Name field, type the name that follows the combination of high-level qualifier and period. For example, if the high-level qualifier is MYFILES and if you want to allocate the data set MYFILES.TEST.COBOL, specify the string TEST.COBOL in the Data Set Name field.
    4. Click Next.
  5. At the Data Set Allocation page, you indicate one of three ways to begin specifying allocation values such as record format, record length, and block size. You select one of three radio buttons:
    • If you select Copy characteristics from an existing data set, click Browse. At the displayed window, expand the entry that identifies the high-level qualifier, then click the name of a data set that can act as a model for your new data set. To return to the Data Set Allocation page, click OK or Cancel:
      • To retain the name of the model data set, click OK; or
      • To avoid retaining any name when you return to the Data Set Allocation page, click Cancel.
    • If you select Specify characteristics by usage type, you select a value from each of two list boxes:
      • The Category list box indicates a kind of content: Source, Listing, or Other
      • The Type list box gives a further categorization; within Source, for example, are COBOL, PL/I, ASM, REXX™, and JCL
    • If you select Specify characteristics (advanced allocation), the allocation values for you to customize are the values that were most recently in place. Use this selection after allocating the first in a series of equivalently structured data sets.
  6. To display the Data Set Characteristics page (where you set the actual allocation values), click Next.
  7. Specify the allocation values. For details on what values are required for different uses, contact your z/OS system administrator. That administrator can also inform you whether you need to click System Managed Storage to assign a data set to a particular class. Rational® Developer for System z® enforces certain rules for record format (RECFM), record length (LRECL), and block size (BLKSIZE). See Data set allocation rules for information.
  8. To allocate the data set, click Finish.

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