Issues

Issues

• Auto-prepare: error during Read() leaves later batch statements BeingPrepared, then 26000 "_autoN does not exist" forever on that connection

  Bug

  npgsql/npgsql#6755 · opened on Nov 10, 2026 · 10.0.4
  1

• ReadReplicationSlot returns the slot name as passed, not the one the server read

  npgsql/npgsql#6735 · opened on Nov 1, 2026 · 11.0.0

• Multi-host: a host that accepts TCP but never responds is never marked offline, so every new connection waits for the full Timeout

  npgsql/npgsql#6733 · opened on Nov 1, 2026

• What replaces multiplexing?

  npgsql/npgsql#6731 · opened on Oct 31, 2026
  1

• NpgsqlRange<T>.ToString() formats bounds with the current culture, so EF Core's ToQueryString() and parameter logs show range text PostgreSQL misreads

  npgsql/npgsql#6730 · opened on Oct 29, 2026
  1

• Writing a decimal as numeric allocates a short[9] per value

  npgsql/npgsql#6728 · opened on Oct 28, 2026

• Reading a large interval as TimeSpan returns a wrong value instead of throwing

  npgsql/npgsql#6726 · opened on Oct 28, 2026

• NpgsqlConnectionStringBuilder.Remove and Clear leave Encoding and Kerberos Service Name in the connection string

  npgsql/npgsql#6724 · opened on Oct 28, 2026

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

  Bug

  npgsql/npgsql#6705 · 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

  Bug

  npgsql/npgsql#6704 · 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

  Bug

  npgsql/npgsql#6703 · opened on Oct 25, 2026 · 11.0.0

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

  Bug

  npgsql/npgsql#6702 · opened on Oct 25, 2026 · 11.0.0

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

  Bug

  npgsql/npgsql#6701 · opened on Oct 25, 2026 · 11.0.0

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

  Bug

  npgsql/npgsql#6700 · opened on Oct 25, 2026 · 11.0.0

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

  Bug

  npgsql/npgsql#6699 · 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

  Bug

  npgsql/npgsql#6698 · opened on Oct 25, 2026 · 11.0.0

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

  Bug

  npgsql/npgsql#6697 · 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 · opened on Oct 24, 2026
  2

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

  npgsql/npgsql#6662 · opened on Oct 2, 2026

• 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 · opened on Sep 22, 2026

• _text type column is skipped when binding a DataTable

  npgsql/npgsql#6643 · opened on Sep 10, 2026
  3

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

  npgsql/npgsql#6641 · opened on Sep 8, 2026
  3

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

  Bug

  npgsql/npgsql#6600 · 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 · opened on Jun 1, 2026
  2

• Allow more customization of Pool behavior

  npgsql/npgsql#6595 · opened on Jun 1, 2026
  1