Issues

• COPY API: problems after an error, a cancellation or the end of the operation

  copy
  Bug

  npgsql/npgsql#6705 · Filter by author Brar opened on Oct 25, 2026 · 11.0.0
  

• COPY TO STDOUT through BeginRawBinaryCopy or BeginTextExport: an error after the last row makes the dispose wait until Command Timeout and break the connection

  copy
  Bug

  npgsql/npgsql#6704 · Filter by author Brar opened on Oct 25, 2026 · 11.0.0
  

• Binary COPY export: after a server error, the exporter can poison the connection or wait until Command Timeout

  copy
  Bug

  npgsql/npgsql#6703 · Filter by author Brar opened on Oct 25, 2026 · 11.0.0
  

• COPY TO STDOUT misreads data after a notice longer than the read buffer

  copy
  Bug

  npgsql/npgsql#6702 · Filter by author Brar opened on Oct 25, 2026 · 11.0.0
  

• Disposing a ReplicationConnection while MoveNextAsync is pending: the call never completes, and Debug builds crash

  replication
  Bug

  npgsql/npgsql#6701 · Filter by author Brar opened on Oct 25, 2026 · 11.0.0
  

• Replication: MoveNextAsync throws NullReferenceException after the connection broke while a message was held

  replication
  Bug

  npgsql/npgsql#6700 · Filter by author Brar opened on Oct 25, 2026 · 11.0.0
  

• Replication misreads the stream after a backend message larger than the read buffer

  replication
  Bug

  npgsql/npgsql#6699 · Filter by author Brar opened on Oct 25, 2026 · 11.0.0
  

• Replication feedback: a zero interval floods the server, invalid intervals break the stream, SendStatusUpdate hides write failures

  replication
  Bug

  npgsql/npgsql#6698 · Filter by author Brar opened on Oct 25, 2026 · 11.0.0
  

• Physical replication reports the server's WAL end as the write position

  replication
  Bug

  npgsql/npgsql#6697 · Filter by author Brar opened on Oct 25, 2026 · 11.0.0
  

• pgoutput: NullReferenceException with two-phase slots and stream aborts, misread stream aborts with protocol V4 unless streaming = parallel

  replication
  Bug

  npgsql/npgsql#6696 · Filter by author Brar opened on Oct 25, 2026 · 11.0.0
  

• TimelineHistory throws InvalidCastException on PostgreSQL 14+, Show("all") breaks the connection, ReplicationConnection.CommandTimeout is ignored

  replication
  Bug

  npgsql/npgsql#6695 · Filter by author Brar opened on Oct 25, 2026 · 11.0.0
  

• COPY APIs leave the connection out of sync when the COPY command doesn't copy through the client

  copy
  Bug

  npgsql/npgsql#6694 · Filter by author Brar opened on Oct 25, 2026 · 11.0.0
  

• Replication commands don't quote slot names, output plugin names and option values

  replication
  Bug

  npgsql/npgsql#6693 · Filter by author Brar opened on Oct 25, 2026 · 11.0.0
  

• NodaTime DateInterval read: an end of 9999-12-30 comes back as 9999-12-31, and unbounded dateranges get invented bounds

  npgsql/npgsql#6688 · Filter by author CaffeinatedCoder opened on Oct 24, 2026

• Double Disposal of NpgsqlTransaction can cause wrong connection to be closed / Connection Pool Exhaustion

  npgsql/npgsql#6665 · Filter by author BrunoJuchli opened on Oct 5, 2026
  1

• CancellationToken has no effect until Command Timeout while the server doesn't answer the prepended DISCARD ALL

  npgsql/npgsql#6662 · Filter by author lahma opened on Oct 2, 2026

• GSS encryption fallback (GssEncryptionMode=Prefer) can retry on a second socket without the connection Timeout — Open blocks until the peer closes (~2%)

  Bug

  npgsql/npgsql#6655 · Filter by author zarkomatejic opened on Sep 22, 2026 · 10.0.4
  4

  

• Random error while 'SELECT', PostgreSQL v17.11-3, Zebra MC3401, Android 14, Visual Studio 2022, C#, .Net9.0, Ngpsql 8.0.9, Npgsql 9.0.5, Npgsql 10.0.3

  npgsql/npgsql#6652 · Filter by author eaktivo opened on Sep 22, 2026

• _text type column is skipped when binding a DataTable

  npgsql/npgsql#6643 · Filter by author dca00 opened on Sep 10, 2026
  3

• VolatileResourceManager does not call preparingEnlistment.ForceRollback when Postgres transaction is aborted

  npgsql/npgsql#6641 · Filter by author thuustalu opened on Sep 8, 2026
  3

• Received unknown response E for SSLRequest (expecting S or N)

  Bug

  npgsql/npgsql#6600 · Filter by author Pat28 opened on Jun 8, 2026 · 10.0.4
  1

  

• Heads-up: intermittent SIGSEGV after upgrading to 10.0.3 (likely a krb5/Alpine issue)

  npgsql/npgsql#6596 · Filter by author maartenkools opened on Jun 1, 2026
  2

• Allow more customization of Pool behavior

  npgsql/npgsql#6595 · Filter by author DavidSchuldenfrei opened on Jun 1, 2026
  1

• NpgsqlBinaryImporter Invalid exception message in ThrowColumnMismatch

  npgsql/npgsql#6583 · Filter by author andreas-aris opened on May 20, 2026
  1

• Load composite field typmods

  area-serialization
  Feature

  npgsql/npgsql#6582 · Filter by author NinoFloris opened on May 20, 2026