Post #1
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Jordan
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Joined: May 2, 2026, 11:10 AM
Posted: Jul 31, 2026, 10:16 AM
Keep seeing SPACE=(CYL,(primary,secondary)) or TRK. What happens if I run out of primary?
Thread: JCL and JCL Utilities
What is SPACE=(CYL,(1,1)) asking for?
Started by Jordan • user2 replies192 viewsLast activity 2 weeks ago
Post #2
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Jen
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Joined: Sep 3, 2024, 11:02 AM
Posted: Jul 31, 2026, 12:16 PM
Primary = first chunk allocated. Secondary = extra chunks when it grows (up to a limit of extents).
CYL = cylinders, TRK = tracks. Bigger unit = bigger pieces.
If it cannot get more space you get SB37 / SD37 / SE37 flavors. Size it from how big the file actually gets, not vibes.
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