Issues

Issues

• Incorrect Table unknown error positions in INSERT and UPDATE OR INSERT

  FirebirdSQL/firebird#9287 · opened on Nov 12, 2026

• 6.0 optimizer regression: a three-table inner join needs 21.7x more page fetches than in 5.0

  FirebirdSQL/firebird#9286 · opened on Nov 10, 2026
  2

• Improve cardinality estimates for small tables with sparsely populated data pages

  FirebirdSQL/firebird#9285 · opened on Nov 10, 2026

• Cached number of data pages of a relation (rel_data_pages) is too low after an INSERT and underflows when pages are released, giving wrong cardinality estimates and plans

  FirebirdSQL/firebird#9283 · opened on Nov 10, 2026

• Parallel index creation with non-default session settings causes wrong SELECT, UPDATE and DELETE results

  FirebirdSQL/firebird#9280 · opened on Nov 8, 2026

• Hang when a transaction inserts a parent row and adds a FOREIGN KEY with parallel workers enabled

  FirebirdSQL/firebird#9279 · opened on Nov 8, 2026

• After a failed COMMIT of ALTER TABLE ... ADD, a SELECT through a view is not rejected in the failed transaction; a later SELECT from the table raises bugcheck 179 (follow-up to #9247 and #9273)

  FirebirdSQL/firebird#9276 · opened on Nov 6, 2026

• Super/SuperClassic: after a kill of an attachment that waits for a relation lock, no other attachment on the server can be killed

  FirebirdSQL/firebird#9275 · opened on Nov 6, 2026

• After a failed COMMIT of ALTER TABLE ... ADD, a SELECT ... WITH LOCK compiled earlier (prepared statement or stored procedure) still stores an empty row (follow-up to #9247)

  FirebirdSQL/firebird#9273 · opened on Nov 5, 2026

• Typo in error message 335545336 (temp_space_invalid_pos): "positon" should be "position"

  FirebirdSQL/firebird#9272 · opened on Nov 5, 2026

• fb_cancel_raise is not honoured promptly for statements with DISTINCT

  FirebirdSQL/firebird#9268 · opened on Nov 4, 2026

• IS NOT DISTINCT FROM a non-NULL literal loses the UNIQUE row bound and causes a HASH/full-scan regression in Firebird 5.0

  FirebirdSQL/firebird#9262 · opened on Oct 31, 2026
  1

• Super: changing Forced Writes while other attachments write leaves the database unusable until all attachments disconnect

  FirebirdSQL/firebird#9259 · opened on Oct 30, 2026
  2

• macOS arm64 pkg 5.0.4: wire-crypt plugin libChaCha.dylib fails to dlopen from non-framework processes (@rpath/lib deps not resolvable)

  FirebirdSQL/firebird#9252 · opened on Oct 29, 2026
  1

• Remote IBatch: continuation of a stream BLOB is decoded as segmented when the default BPB is segmented (isc_net_write_err)

  FirebirdSQL/firebird#9251 · opened on Oct 29, 2026
  1

• "Table unknown" after DROP TRIGGER is rolled back (6.0)

  FirebirdSQL/firebird#9248 · opened on Oct 29, 2026

• Feature: IBatch: optional per-message inserted/updated/deleted counts

  Feature

  FirebirdSQL/firebird#9240 · opened on Oct 24, 2026

• Bug: IBatch: TAG_RECORD_COUNTS reports 0 for EXECUTE BLOCK messages that change rows

  Bug

  FirebirdSQL/firebird#9239 · opened on Oct 24, 2026

• A query to any MON$ table waits for as long as a DROP TABLE (or RECREATE TABLE) of a table used by another attachment waits in its COMMIT

  FirebirdSQL/firebird#9236 · opened on Oct 22, 2026

• Firebird Client Lockup after fork()

  FirebirdSQL/firebird#9235 · opened on Oct 22, 2026
  2

• isc_get_segment never returns isc_segstr_eof for CAST(text BLOB AS BLOB SUB_TYPE BINARY) when the BLOB charset needs transliteration to a UTF8 connection (5.0.4)

  FirebirdSQL/firebird#9234 · opened on Oct 21, 2026

• gbak: value-taking switch without a value placed before -se causes endless recursion of the embedded service manager (thousands of threads)

  FirebirdSQL/firebird#9228 · opened on Oct 21, 2026

• Transaction started with SNAPSHOT AT NUMBER sees changes committed after that snapshot; parallel gbak backup is inconsistent (FK violation on restore)

  FirebirdSQL/firebird#9227 · opened on Oct 21, 2026
  5

• Optimize the Window Functions Execution Mechanism

  FirebirdSQL/firebird#9226 · opened on Oct 21, 2026

• Regression in FB 6.0: Output message items using plain blr_text/blr_varying fail with string right truncation or malformed string on NONE/OCTETS columns over multi-byte connection charsets

  FirebirdSQL/firebird#9222 · opened on Oct 20, 2026