connection exception
SQLSTATE 08000 is the generic connection exception code. It is raised when a connection-level error occurs that does not map to a more specific 08xxx subcode. The connection may be in an unusable state after this error.
- 1Network interruption between client and Postgres server
- 2Server-side connection reset not covered by a more specific code
- 3Protocol-level error during connection setup or teardown
Network fault between application server and Postgres.
expected output
ERROR: connection exception
Fix 1
Implement connection retry with exponential backoff
WHEN When transient network faults cause 08000 errors.
Why this works
Close the failed connection, wait briefly, then obtain a new connection from the pool. Do not reuse a connection that raised 08000.
Fix 2
Use a connection pool with health checks
WHEN In production applications.
Why this works
Connection pools like PgBouncer or pg-pool test connections before handing them to the application, evicting broken connections automatically.
✕ Retry on the same connection object
A connection that raised 08000 is in an undefined state and must be replaced.
Class 08 — Connection Exception
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