PostgreSQLERRORNotableExternal Routine Invocation ExceptionHIGH confidence

external routine invocation exception

Q: How to fix PostgreSQL 39000 external routine invocation exception?

Add error handling inside the external function: Wrap the function body with language-appropriate error handling (try/except in Python, eval{} in Perl, PG_TRY/PG_CATCH in C) to capture and report errors with meaningful messages.

What this means

SQLSTATE 39000 is the generic external routine invocation exception code raised when there is an error invoking an external routine (a function written in an external language such as PL/Python, PL/Perl, or C).

Why it happens

1The external language runtime fails to invoke the function
2The function raises an unhandled exception that is caught at the invocation layer

How to reproduce

External routine invocation failure.

expected output

ERROR:  external routine invocation exception

Fix

Add error handling inside the external function

WHEN When 39000 is raised by an external function.

Why this works

Wrap the function body with language-appropriate error handling (try/except in Python, eval{} in Perl, PG_TRY/PG_CATCH in C) to capture and report errors with meaningful messages.

Sources

Official documentation ↗

Class 39 — External Routine Invocation Exception

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At a glance

PlatformPostgreSQL SQLSTATE Errors

Code39000

ClassExternal Routine Invocation Exception

SeverityERROR

TierNotable

ConfidenceHIGH