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Informix Error -21408: Error writing to file.

Cause and resolution

Error writing to file.

If this internal error recurs, note all circumstances and contact IBM Informix Technical Support.

Oninit® Troubleshooting Guidance

Reasons / Common Causes

-21408 is an internal installation error — per the official guidance, no user-actionable cause is documented beyond a write failure.

  1. A write failure during installation, per the official guidance — no further user-actionable detail is given.
Solutions / Resolution
  1. If this internal error recurs, note all circumstances and contact IBM Informix Technical Support, per the official guidance.
Examples
N/A

No specific triggering statement is documented — this is reported as an internal error.

Diagnostic Checks
  1. Check available disk space and write permissions in the installation target directory, and escalate to IBM Informix Technical Support if the error recurs.
Related Errors / Related Topics
  • -21407 — "Error reading from file." The mirror-image I/O error, on reading rather than writing.

A write to a file during installation failed — check disk space and permissions, and contact IBM Informix Technical Support if it recurs.