Informix Error -7211: Cannot reference an external NLS database.

Reasons / Common Causes

-7211 fires when the current database isn't an NLS database and an NLS database on another (or the same) database server is referenced — per the official guidance.

1. The current database isn't NLS-enabled, and an external NLS database was referenced, per the official guidance — the direct, only cause.

Solutions / Resolution

1. Connect to (or create) an NLS-enabled current database before referencing an external NLS database, per the official guidance.
2. Dropping an external NLS database is still possible from a non-NLS current database, per the official guidance, as long as the NLS environment variables are set correctly — this specific operation is an exception to the general restriction.

Examples

N/A

No specific triggering statement is documented beyond referencing an NLS database from a non-NLS current database.

Diagnostic Checks

1. Check whether the current database is NLS-enabled, and connect to an NLS database first if an external NLS database needs to be referenced (other than dropping it).

Related Errors / Related Topics

• -7210 — "This server does not have NLS capability." A related NLS restriction, about the server itself lacking NLS support entirely, rather than the current database not being NLS-enabled.
• -7202 — "Database was created without NLS functionality." A related NLS restriction, about NCHAR/NVARCHAR usage in a non-NLS database, rather than referencing an external NLS database.

The current database isn't NLS-enabled, so an external NLS database can't be referenced (except to drop it) — connect to an NLS database first.