SQLSTATE 08007 signals the client lost its connection in the middle of COMMIT, so PostgreSQL cannot confirm whether the transaction was persisted or rolled back.
PostgreSQL error 08007 – transaction_resolution_unknown – appears when the client disconnects while a COMMIT is in progress. PostgreSQL cannot confirm the transaction outcome, leaving your data in an indeterminate state. Reconnect, verify the target rows or use idempotent retries, and harden network reliability to resolve the issue.
PostgreSQL Error 08007
Error 08007 tells you that PostgreSQL could not finish reporting the result of a COMMIT or ROLLBACK because the network connection broke. The server may have completed the transaction, but the client has no evidence, leaving data consistency uncertain.
The condition name transaction_resolution_unknown is part of the SQLSTATE 08 connection-exception class. It is rare but critical because any statement dependent on that transaction now rests on unknown state.
Network interruptions that occur between the client and PostgreSQL while COMMIT is being flushed to WAL are the primary trigger. The server might still apply the commit, yet the client times out or loses its socket.
Backend crashes, PostgreSQL restarts, or load balancer drops can also sever the session at the decisive moment, producing SQLSTATE 08007. SSL renegotiation faults and firewall timeouts are frequent culprits.
First, immediately reconnect with a fresh session. Inspect the affected tables to confirm whether the expected changes exist. If your application generated a unique key, query for that value to decide whether to re-run the transaction.
Wrap retry logic with idempotent or compensation steps. Use explicit two-phase commit (PREPARE TRANSACTION / COMMIT PREPARED) in distributed systems to obtain deterministic outcomes even if the original session dies.
Batch inserts over flaky VPN links often hit 08007. Add application-level retries capped by a primary-key check to prevent duplicates.
Web services behind PgBouncer may receive 08007 during failover. Configure PgBouncer with server_fast_close = 0 and set tcp_keepalives to keep sessions alive.
Maintain low network latency and enable TCP keepalives on both client and server. Tune statement_timeout to a value higher than expected commit times rather than the default.
Consider synchronous_commit = remote_apply in high-value workloads so replicas acknowledge commit durability. Use application-side correlation IDs to verify completion after reconnecting.
08006 connection_failure appears when the client cannot establish a session at all, unlike 08007 which fires mid-transaction. Fix 08006 by checking host, port, and pg_hba.conf.
40001 serialization_failure may surface after retrying a transaction that was actually rolled back. Apply exponential back-off before resubmitting.
No. PostgreSQL may have committed the transaction. The message only states the client cannot confirm the result.
Reconnect and query for unique identifiers created by the transaction. Absence usually means rollback.
Only if your statements are idempotent. Otherwise, build logic to detect prior completion before retrying.
Galaxys desktop SQL editor persists query drafts locally and reconnects quickly. Its AI copilot suggests idempotent UPSERT patterns, reducing duplicate-row risks after retries.
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