MySQL Connector/ODBC Release Notes

2.1 Changes in MySQL Connector/ODBC 9.4.0 (2025-07-22, General Availability)

Note

These release notes were created with the assistance of HeatWave GenAI.

Bugs Fixed

  • .NET applications quit unexpectedly while trying to connect to a MySQL server using Connector/ODBC. This has been fixed by adding the -DISABLE_CONSTEXPR_MUTEX_CONSTRUCTOR option when compiling Connector/ODBC and the mysqlclient library. (Bug #37845086)

  • The commercial Debian package installed some of the documentation files under the wrong folders. Those files are now put under ./usr/share/doc/mysql-connector-odbc-commercial/ as expected. (Bug #37771319)

  • Company name and other pieces of information were missing when the Connector/ODBC DLLs were examined by, for example, choosing its Properties in the Windows Explorer and looking at the Details tab. (Bug #37199170)

  • A memory leak occurred when there was an error with my_pos_update(). This has been fixed now by proper error handing and statement deallocations. (Bug #18532085)