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Informix Error -483

-483 SQL descriptor's name is too long. Limit is 128 characters.

The maximum length for SQL descriptor names depends on the database server. In IBM Informix Dynamic Server 9.2 or later, the maximum length is 128 characters. In other Informix database servers, the maximum length is 18 characters.

Oninit® Troubleshooting Guidance

Reasons / Common Causes

-483 is the descriptor-name-length counterpart of -481's statement-name-length rule: the same version-dependent limit applies — 128 characters on Dynamic Server 9.2x and later, but only 18 characters on older Informix servers.

  1. A descriptor name exceeding 128 characters even on a current server version — unusual, but possible with a very long programmatically generated name.
  2. A descriptor name between 19 and 128 characters, valid on 9.2x+ but exceeding the 18- character limit on an older server the code is actually running against.
  3. Code written assuming the newer, longer limit applies universally, without checking the actual target server version.
Solutions / Resolution
  1. Shorten the descriptor name to fit within the applicable limit, per the official guidance — 128 characters on 9.2x+, or 18 characters on older servers.
  2. For code intended to run against multiple server versions, use the more conservative 18-character limit to stay compatible with older servers.
  3. Check the actual target server version before assuming the longer limit applies.
Examples
Keeping descriptor names short for cross-version compatibility
ALLOCATE DESCRIPTOR 'd1';
-- short, safe well within either the 18- or 128-character limit
A name too long for an older server
ALLOCATE DESCRIPTOR 'this_is_a_very_long_descriptor_name_over_18_chars';
-- -483 on a pre-9.2x server, where the limit is 18 characters
Diagnostic Checks
  1. Measure the descriptor name's length and compare against the applicable limit for the target server version.
  2. Confirm the actual target server version if the name is valid on 9.2x+ but the error still occurs.
Related Errors / Related Topics
  • -481 — "Invalid statement name or statement was not prepared." The closely related statement-name counterpart of this same version-dependent length limit.
  • -469 — "This descriptor does not exist." A related descriptor-usage error, about a missing allocation rather than a name-length restriction.

Same version-dependent limit as statement names (-481) — use short descriptor names, or check the target server version explicitly if longer names are needed.