MariaDB Connector/ODBC 3.2.1 Release Notes

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The most recent Stable (GA) release of MariaDB Connector/ODBC is:
MariaDB Connector/ODBC 3.2.2

Download Release Notes Changelog About MariaDB Connector/ODBC

Release date: 1 Dec 2023

This is a Release Candidate (RC) release of MariaDB Connector/ODBC 3.2.

Do not use non-stable (non-GA) releases in production!

MariaDB Connector/ODBC 3.2.1 is built on top of MariaDB Connector/C v.3.3.8.

Notable Changes

  • ODBC-66 - Support ODBC 3.8 standard The driver is now compliant with ODBC standard version 3.8. Mainly that means implementation of SQLCancelHandle API function and SQL_ATTR_RESET_CONNECTION connection attribute support.
  • ODBC-397 - Add Prepared Statement Cache to the Connector. The driver now uses cache for server side prepared statements, that allows not to re-prepare statements, but use them from the cache. Application can configure the cache with PSCACHESIZE and MAXCACHEKEY connection string options. The former sets the size of the cache, i.e. the number of statements that will be cached, the latter is the maximal size of the cache key, that effectively limits the maximum query length, that will be the value of MAXCACHEKEY - length of the current schema name - 1.
  • Connector/ODBC is now available as RPM and DEB packages for selected platforms(RHEL, Ubuntu, Debian)
  • Improved protocol resilience in case of resultset streaming. In the version 3.1 if the resultset streaming is used, it will block the connection, and the driver will return error on any new query. The 3.2.1 driver in this case will cache the rest of currently streamed resultset, and execute the new query without error

Bug Fixes

  • ODBC-389 - alloc-dealloc-mismatch in MADB_DbcFree
  • ODBC-394 - Transaction Isolation with 11.1.1 server
  • ODBC-395 - Transaction Isolation Level is not applied if set before connect
  • ODBC-401 - SQLCancel won't work in case of encrypted connection, and in some other cases


For a complete list of every change made in this release, with links to detailed information on each push, see the changelog.

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