Description

The ALLOC_DIR_BLOCKS option is a dynamic allocation option that specifies the number of directory blocks for newly allocated partitioned data sets.

Usage

number is equivalent to the third positional parameter of the second positional parameter of the JCL DD statement's SPACE parameter.

Valid values for number are any number (number of directory blocks to allocate).

Default is 20.

Refer to the IBM JCL Reference manual for complete details.