On 5/12/2016 10:17 AM, Mark Zelden wrote:
LCCA/PCCA storage. But the default CBLOC has been VIRTUAL31 since z/OS 1.12. Even if you are still overriding it to below the line it shouldn't be a problem unless you are reserving a large number (FSVO large) and have 24-bit issues already in your common / pvt storage.
Not just virtual; there is also a good deal of real storage wasted if too many CPUs are reserved. That's one reason why MVS lowered the default DYNCPADD count to 16 starting in z/OS 2.1. Before that, the value was _all_ CPUs that could be configured to the LPAR i.e., the max supported by z/OS or the number actually on the box, whichever was lower...
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