Informix Error -777: Internal - function not valid on fragmented table.

Reasons / Common Causes

-777 is flagged by the official text as an internal error: some internal function was applied to a fragmented table in a context where it isn't valid, with no documented application-level trigger.

1. A genuine internal engine condition, per the official guidance's framing, applying an internal function to a fragmented table in an unsupported way, with no other documented application-level cause.
2. An operation ordinarily valid on a non-fragmented table, attempted against a fragmented one in a code path that doesn't account for fragmentation — plausible given the specific "not valid on fragmented table" framing, though the official text doesn't name which operation.

Solutions / Resolution

1. If you cannot find a direct cause, note all circumstances and contact IBM Informix Technical Support, per the official guidance — there is no documented general application-level fix.
2. Capture the exact statement/operation and confirm the table involved is fragmented, given the error's specific framing, for escalation.
3. Try the equivalent operation against a non-fragmented table (or a specific fragment directly, if applicable), as a diagnostic step, to help isolate whether fragmentation is truly the distinguishing factor.

Examples

Capturing circumstances for escalation

-- Confirm the table involved is fragmented, and record the exact
-- statement/operation attempted, for escalation.

Diagnostic Checks

1. Confirm the table involved is fragmented.
2. Capture the exact statement/operation for escalation.

Related Errors / Related Topics

No closely related error codes are cross-referenced for -777 in this set yet.

An internal error specific to some function applied to a fragmented table — confirm the table is fragmented and capture the exact operation for escalation.