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Data Map Properties - RRDS Access Method

View or edit properties for a VSAM relative record data set (RRDS) data map.

File Name: The fully-qualified data set name of the VSAM relative record data set (RRDS).
Number of Index Buffers: The number of I/O buffers for index control intervals that PowerExchange requests VSAM to allocate. Default is 1.
Number of Data Buffers: The number of I/O buffers for data control intervals that PowerExchange requests VSAM to allocate. Default is 2.
CI ACCESS: Accesses the entire contents of a control interval rather than individual data records when reading VSAM data sets. This option improves read performance.

Clear this option to access the contents of individual data records when reading VSAM data sets.

You cannot use the
CI ACCESS
option if the data set is compressed.
Prefix record with RRN value: Returns the relative record number (RRN) value for all records read from the VSAM data set.

You must include a 8-byte binary field at the beginning of the record to contain the RRN value.
Data Codepage: The code page that describes the character set for the character data in the database. For the
Default
code page, PowerExchange uses the default code page for the operating system. Default is
Default
.
Skip First n Records from File: The number of header records in the data file to skip. For example, if the data file. For example, if the data file contains one or more header records that do not contain data, enter the number of header records to skip.

Valid values are from 0 through 2147483647. Default is 0.