HEAP64

Allocates storage for user-controlled dynamically allocated variables

HEAPCHK

Specifies that heap storage be inspected for damage

HEAPPOOLS

Improves the performance of heap storage allocation above the 16-MB line and below the 2-GB bar

HEAPPOOLS64

Improves the performance of heap storage allocation above the 2-GB bar

HEAPZONES

Provides a heap check zone for each storage request

IOHEAP64

Allocates I/O-related storage

LIBHEAP64

Allocates library heap storage

PAGEFRAMESIZE64

Specifies the preferred page frame size in virtual storage for HEAP64, LIBHEAP64, IOHEAP64 and STACK64 storage that is obtained during application initialization and runtime

RPTSTG

Generates a storage report

STACK64

Controls stack allocation above the 2-GB bar

STORAGE

Controls the initial content of heap and stack

THREADSTACK64

Controls the stack allocation for each thread, except the initial thread, in a multithreaded environment

See z/OS Language Environment Programming Reference for syntax information about runtime options.