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.
JCL ⭐ Featured
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Q: How to code symbolic override?

Answer:
EXEC proc,SYM1=value1,SYM2=value2. Symbols defined in PROC with SET or & default. Override replaces default. Multiple overrides comma-separated. Must match PROC symbols. Case sensitive.
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.
VSAM
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Q: How to handle status 96?

Answer:
Status 96 is no DD statement for file. Check JCL has correct DD name. May be dynamic allocation failure. DD name must match SELECT ASSIGN. Case sensitive in some systems.
DB2
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Q: What is FETCH SENSITIVE cursor?

Answer:
SENSITIVE cursor reflects concurrent changes by other processes. EXEC SQL DECLARE cursor SENSITIVE STATIC/DYNAMIC SCROLL CURSOR. INSENSITIVE does not see changes. Affects isolation behavior. Consider performance impact.