File status 92 logic error

VSAM file status 92: Logic error — the file operation contradicts the file state.

What it means

• Logic error — the file operation contradicts the file state.
• Example: READ without a successful OPEN, or WRITE to a file opened INPUT.

Common causes

• I/O issued before OPEN or after CLOSE.
• Wrong OPEN mode for the operation.
• START without a prior successful positioning.

How to diagnose

• Trace the OPEN/CLOSE sequence.
• Match each I/O verb to the OPEN mode.

How to fix it

• Fix the open/close logic and modes.

Example: Always check FILE STATUS after I/O

FILE STATUS after every I/O turns mystery failures into clear codes.

Interview tip

• Q: How would you troubleshoot a File status 92 logic error in production?
• A: I would confirm the exact file status code, check the JCL DD and catalog, then apply the specific fix.

Prevention checklist

• Check FILE STATUS after every OPEN/READ/WRITE.
• Keep FD layouts in sync with cluster definitions.