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SPACSECI—increase or decrease secondary allocation quantity (used with StopX37/II)

The primary role of the SPACSECI function is to increase the secondary allocation quantity as the file is being extended.

However, the SPACSECI function can also be used to decrease the secondary amount during an extend (see the PCTI RLST parameter).

The secondary allocation quantity is specified for a file to provide expansion space if the primary quantity is insufficient. To prevent overallocation on the data center’s disk drives, primary and secondary quantities are usually specified to handle normal conditions. However, during periods of unusually heavy activity, the secondary allocation might not be sufficient to allow the file to hold the extra data, causing the job to abend with a B37 or E37 system code.

When the PCTI parameter is not specified, SPACSECI increases the secondary allocation quantity of a data set at a user-defined point during secondary extent (see the SPACSECI parameter). The secondary quantity increase adds increasingly larger secondary extents to a data set and can prevent job abends due to out-of-space conditions.

For more information, see:



 

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MainView SRM StopX37/II 7.9