Informix Error -771

Reasons / Common Causes

-771 is flagged by the official text as an internal error involving an invalid table-lock identifier, with no documented application-level trigger.

1. A genuine internal engine condition in lock-identifier handling, per the official guidance's framing, with no other documented application-level cause.
2. A lock-table condition interacting with an unusual concurrency pattern, plausible in general terms given the "table lock id" framing, though the official text doesn't name specifics.

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. Check lock-table health around the time of the failure:

   onstat -k
   

3. Capture the exact statement/operation and concurrent activity at the time of the failure, for escalation.

Examples

Checking lock-table state

$ onstat -k
-- review active locks around the time of the failure

Diagnostic Checks

1. Check onstat -k for lock-table state around the time of the failure.
2. Capture the exact statement/operation in progress for escalation.

Related Errors / Related Topics

No closely related error codes are cross-referenced for -771 in this set yet.

An internal lock-identifier error — check lock-table state (onstat -k) and capture circumstances for escalation to IBM Informix Technical Support.