CNV control statement

This statement specifies the position of the control interval in the KSDS, ESDS, LDS, or RRDS data set to be verified, changed, or both.

CNV ci_rba

ci_rba

The relative byte address of the control interval. (Control interval RBAs have the same value as the RBA of the first record in the control interval). It can be specified with either of the following expressions:

A decimal expression (for example, 4096). The allowable maximum value is 4294967295. Only for extended addressable KSDS data sets and extended addressable LDS data sets, the maximum value is 140737488355327.
A hexadecimal expression that consists of an even number of digits (for example, X'1000'). A leading zero must be added to an odd number of digits (for example, X'010B00'). The allowable maximum value is X'FFFFFFFF'. Only for extended addressable KSDS data sets and extended addressable LDS data sets, the maximum value is X'7FFFFFFFFFFF'.

The size of extended addressable KSDS data set and extended addressable LDS data set must be less than the control interval (CI) size multiplied by 4 GB. For example, the 4 KB CI determines the maximum data set size as 16 TB; and the 32 KB CI, as 128 TB.

You cannot use the CNV control statement when you access a compressed data set.