Informix Error -32122: Cannot modify system catalog tables.

Reasons / Common Causes

-32122 fires when a statement attempts to change a system catalog table's attributes — per the official guidance.

1. An attempt to change a system catalog table's attribute other than next-extent size, per the official guidance — the direct, only cause; next-extent size is the only attribute the system permits changing on catalog tables.

Solutions / Resolution

1. Only change the next-extent size on a system catalog table, per the official guidance — no other attribute change is permitted.

Examples

N/A

No specific triggering statement is documented beyond attempting to modify a system catalog table's non-next-extent attribute.

Diagnostic Checks

1. Confirm which attribute the statement is trying to change, and limit it to next-extent size for system catalog tables.

Related Errors / Related Topics

• -32114 — "Cannot drop system catalog tables." A related system-catalog restriction, on dropping the table rather than modifying its attributes.

A statement tried to change a system catalog table's attribute other than next-extent size, which isn't permitted.