The ECSA parameter displays the amount of extended common service area (ECSA) storage above the 16 MB line that CA OPS/MVS has directly acquired. Compare this value to the limit defined by the ECSALIMIT parameter. Note that ECSA storage may be indirectly acquired by operating system services used by CA OPS/MVS. For example, the IBM Communication Server (VTAM) acquires ECSA storage when MSF APPC connections are used. Any storage acquired in this way is not included in this value or in the ECSALIMIT value.
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