database connection_error ai_generated partial

psycopg2.OperationalError: ERROR: could not send data to server: Broken pipe

ID: database/postgresql-checkpoint-wait-timeout

Also available as: JSON · Markdown · 中文
78%Fix Rate
82%Confidence
1Evidence
2024-01-10First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
PostgreSQL 13 active — — —
PostgreSQL 14 active — — —
PostgreSQL 15 active — — —

Root Cause

The PostgreSQL server closed the connection unexpectedly, often due to a timeout (e.g., statement_timeout, idle_in_transaction_session_timeout) or a server crash, causing a broken pipe on the client side.

generic

中文

PostgreSQL 服务器意外关闭连接，通常是由于超时（如 statement_timeout、idle_in_transaction_session_timeout）或服务器崩溃，导致客户端出现管道破裂。

Official Documentation

https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-CONNECT-KEEPALIVES

Workarounds

  1. 80% success Check PostgreSQL logs for the reason the connection was terminated (e.g., statement_timeout, idle_in_transaction_session_timeout). Adjust the relevant timeout parameters in postgresql.conf: statement_timeout = 0 # disable or increase idle_in_transaction_session_timeout = 0 
    Check PostgreSQL logs for the reason the connection was terminated (e.g., statement_timeout, idle_in_transaction_session_timeout). Adjust the relevant timeout parameters in postgresql.conf:
statement_timeout = 0  # disable or increase
idle_in_transaction_session_timeout = 0
  2. 75% success Enable TCP keepalives on the client side to detect broken connections earlier and automatically reconnect: import psycopg2 conn = psycopg2.connect("host=... keepalives=1 keepalives_idle=30 keepalives_interval=10 keepalives_count=5") 
    Enable TCP keepalives on the client side to detect broken connections earlier and automatically reconnect:
import psycopg2
conn = psycopg2.connect("host=... keepalives=1 keepalives_idle=30 keepalives_interval=10 keepalives_count=5")

中文步骤

  1. Check PostgreSQL logs for the reason the connection was terminated (e.g., statement_timeout, idle_in_transaction_session_timeout). Adjust the relevant timeout parameters in postgresql.conf:
statement_timeout = 0  # disable or increase
idle_in_transaction_session_timeout = 0
  2. Enable TCP keepalives on the client side to detect broken connections earlier and automatically reconnect:
import psycopg2
conn = psycopg2.connect("host=... keepalives=1 keepalives_idle=30 keepalives_interval=10 keepalives_count=5")

Dead Ends

Common approaches that don't work:

  1. Increasing connection pool size in the application 90% fail

    The error is not about pool exhaustion but about an existing connection being terminated; more connections don't fix broken pipes.

  2. Restarting the application without checking server logs 85% fail

    The underlying cause (e.g., server-side timeout) is not addressed; the error will recur.