Outage in Fivetran

Fivetran: Multiple PostgreSQL connections failing with "Unknown failure: Unhandled classified exception" due to an issue with JsonB binary decoding

Resolved Minor
August 21, 2025 - Started 13 days ago - Lasted about 3 hours
Official incident page

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Outage Details

The issue has been identified and we are working to resolve it.
Latest Updates ( sorted recent to last )
RESOLVED 13 days ago - at 08/21/2025 10:46PM

This incident has been resolved.


Incident Summary

Description:
Some PostgreSQL connectors failed due to a problem with JsonB binary decoding.

Timeline:
This issue began on 21 Aug 2025 at 4:00 PM UTC and was resolved at 8:30  PM UTC.

Cause:
An issue with JsonB binary decoding caused PostgreSQL connections to start failing.

Resolution:
Engineering implemented a hotfix, which restored normal operations.

MONITORING 13 days ago - at 08/21/2025 09:12PM

A fix has been implemented and we are monitoring the results.

IDENTIFIED 13 days ago - at 08/21/2025 08:10PM

Engineering has identified the issue as being caused by a problem with JsonB binary decoding, and are working to resolve it.

IDENTIFIED 13 days ago - at 08/21/2025 08:05PM

The issue has been identified and we are working to resolve it.

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