Informix Error -12804: Error indicated by an access_method routine.

Reasons / Common Causes

-12804 fires when an access-method routine returns MI_ERROR — per the official guidance.

1. The routine itself returning MI_ERROR, per the official guidance — the direct, only cause.

Solutions / Resolution

1. Investigate the specific access-method routine's error condition — per the official guidance's framing, the routine itself signaled the failure, so the routine's own documentation or implementation is the place to look.

Examples

N/A

No specific triggering statement is documented beyond a routine explicitly returning MI_ERROR.

Diagnostic Checks

1. Identify which access-method routine returned MI_ERROR, and check its documentation or logs for the specific condition it detected.

Related Errors / Related Topics

• -12803 — "Error in executing an access_method routine execution sequence." A related execution error, about a generic execution failure rather than an explicit MI_ERROR return.
• -12805 — "Improper return value from access_method routine." A related return-value error, about an invalid (not merely error) return value.

An access-method routine explicitly returned MI_ERROR — check that routine's own error condition.