Informix Error -4367: Interrupt has already been deferred once in the main program. Each main program may defer interrupts only once.

Cause and resolution

Interrupt has already been deferred once in the main program. Each main program may defer interrupts only once.

The statements DEFER INTERRUPT and DEFER QUIT can only appear in the MAIN section of the program. They can appear only once each in a program.

Oninit® Troubleshooting Guidance

Reasons / Common Causes

-4367 fires when DEFER INTERRUPT appears more than once in the MAIN program — per the official guidance, DEFER INTERRUPT/DEFER QUIT can only appear in MAIN, and each only once per program.

DEFER INTERRUPT used more than once in MAIN, per the official guidance — the direct, only cause.

Solutions / Resolution

Remove the duplicate DEFER INTERRUPT statement.

Examples

A duplicate DEFER INTERRUPT

MAIN
  DEFER INTERRUPT
  ...
  DEFER INTERRUPT
  -- -4367: already deferred above
END MAIN

Corrected

MAIN
  DEFER INTERRUPT
  ...
END MAIN

Diagnostic Checks

Check MAIN for more than one DEFER INTERRUPT statement, and remove the duplicate.

Related Errors / Related Topics

-4365 — "Deferments of interrupt or quit may be executed only in the main program." A related restriction, about location rather than duplicate use.
-4368 — "Quit has already been deferred once in the main program. Each main program may defer quit only once." The equivalent restriction applied to DEFER QUIT instead of DEFER INTERRUPT.

DEFER INTERRUPT is used more than once in MAIN — remove the duplicate.