VSAM ⭐ Featured
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Q: How to delete VSAM cluster?

Answer:
IDCAMS DELETE ds.name CLUSTER. Or DELETE ds.name FILE(ddname) if DD provided. PURGE overrides retention. ERASE clears data. DELETE removes catalog entry and data/index components.
delete cluster idcams
VSAM ⭐ Featured
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Q: What is ERASE on DELETE?

Answer:
ERASE overwrites data with binary zeros. Physical erase before space release. Security requirement for sensitive data. Takes time. Without ERASE, data remains until overwritten.
erase security delete
CICS ⭐ Featured
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Q: What is EXEC CICS SEND CONTROL?

Answer:
SEND CONTROL sends control functions. EXEC CICS SEND CONTROL ERASE FREEKB. Clears screen, unlocks keyboard. No map or data. Prepare terminal for next operation.
send control terminal
VSAM
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Q: What is ERASE parameter?

Answer:
ERASE overwrites data on delete. DELETE CLUSTER ERASE. Security feature - data unrecoverable. Without ERASE, space released but data remains. Use for sensitive data.
erase delete security
CICS
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Q: How to SEND MAP to terminal?

Answer:
EXEC CICS SEND MAP(mapname) MAPSET(mapsetname) FROM(symbolic-map) ERASE. CURSOR option positions cursor. FREEKB unlocks keyboard. ALARM sounds alarm. MAPONLY sends without data. DATAONLY sends only modified fields.
send map terminal