Why monitor CSA and ECSA? Its simple, when common storage (CSA, ECSA, SQA, and ESQA) is exhausted, a system outage will occur. When ESQA is exhausted, further requests for ESQA are allocated from ECSA. When ECSA is exhausted, further requests are allocated from the much smaller CSA storage. The main reasons why common storage shortages occur: Not enough common storage is allocated Activity on the system exceeds previous levels, resulting in additional common storage being allocated An address space allocates more and more common... [More]

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