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Allocation errors z/OS ISPF User's Guide Vol II SC19-3628-00 |
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ISPF attempts to recognize inconsistent attributes for partitioned
and sequential data sets before allocating them. However, when conditions
outside ISPF's control result in the allocation of such a data set,
the Allocation Error panel (Figure 1) is displayed.
These conditions are caused by:
Figure 1. Allocation Error Panel (ISRUADCS)
The term inconsistent attributes refers to incompatible values that have been specified for one or more of these items: Space units; Primary or Secondary quantity; Directory blocks; Record format; Record length; Block size. For example, if you allocate a data set with an undefined record format (RECFM=U) and a block size of zero (BLOCKSIZE=0), some ISPF functions (such as Move and Copy) and services (such as LMMOVE, LMCOPY, and LMINIT) cannot use the data set. However, when either the linkage editor or the IEBCOPY utility has been called, these functions and services determine the best block size for the data set. Then, when the data set has a block size greater than zero, the ISPF functions and services listed can be used. The Allocation Error panel gives you the opportunity to delete such a data set because other ISPF functions, such as View (option 1) and Edit (option 2), may not be able to use it. For information about allocation errors and how they affect data set promotion when using SCLM, refer to z/OS ISPF Software Configuration and Library Manager Guide and Reference. |
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