VSAM ⭐ Featured
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Q: How to create VSAM backup?

Answer:
REPRO to sequential file: REPRO INFILE(vsam) OUTFILE(backup). Or EXPORT for full backup with catalog info. Can also use DFSMS backup. REPRO most common for simple backup.
backup repro export
VSAM ⭐ Featured
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Q: How to reorganize VSAM?

Answer:
REPRO out then back: REPRO to sequential, DELETE cluster, DEFINE new cluster, REPRO back. Alternatively, IDCAMS export/import. Reclaims space, restores free space distribution. Schedule regularly.
reorg reorganize maintenance
VSAM
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Q: Explain EXPORT utility

Answer:
EXPORT creates portable copy with catalog info. IDCAMS EXPORT ds.name OUTFILE(dd). Includes cluster definition. IMPORT recreates on target system. Good for migration.
export import portable