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Specification cards are used to specify override values for the batch load process. Unless it is omitted, the specification card must be the first card in the control card file.The card type for a specification card is S. If the specification card is omitted, default values are used.The percentage of data space on a data page that is used. If omitted, up to 75 percent of the data space within the page is used. For more information about adjusting these levels, refer to Page Fill Tailoring.The percentage of data space on a primary index page that is used. If omitted, the value defaults to 75 percent. For more information about page fill levels, refer to Page Fill Tailoring.The percentage of data space on a secondary index page that is used. If omitted, the value defaults to 75 percent. For more information about page fill levels, refer to Page Fill Tailoring.The percentage of data space on a group index page that is used. If omitted, the value defaults to 75 percent. For more information about page fill levels, refer to Page Fill Tailoring.The approximate number of input records to be processed during the run. The value must be right aligned and should not contain commas. If omitted, the default value is 100000. This value is used when calculating the size of the various dynamically allocated work files.If omitted, the value defaults to 50. The value is used when calculating storage requirements for the internal definition tables.The symbolic name of a DASD unit that contains all the dynamically allocated files. The default value is SYSDA. To process work files as quickly as possible, use VIO type symbolic names.The block size for the dynamic work files. If omitted, the block size defaults to 4096 to accommodate a block within one swappable page of memory.This block size is used to create secondary indexes and is extremely important for optimum performance. It should be set to the optimum size to achieve maximum performance benefit. Refer to Appendix B, S6BBRTBL/S6BBRSIX Tuning for more information.When processing very large files and building secondary indexes, a single work file volume could be insufficient. Refer to Appendix B, S6BBRTBL/S6BBRSIX Tuning for more information.
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Copyright © TIBCO Software Inc. All Rights Reserved |