Changes in MySQL Connector/J 9.3.0 (2025-04-15, General Availability)

Version 9.3.0 is a new GA release of MySQL Connector/J. MySQL Connector/J 9.3.0 supersedes 9.2 and is recommended for use on production systems. This release can be used against MySQL Server version 8.0 and later. It supports the Java Database Connectivity (JDBC) 4.2 API, and implements the X DevAPI.

• Functionality Added or Changed

• Bugs Fixed

Functionality Added or Changed

• Starting from this release, when using the authentication_kerberos_client and authentication_ldap_sasl_client plugins for authentication, if you are using a JAAS login configuration file (which is optional), the only LoginModule that Connector/J accepts is com.sun.security.auth.module.Krb5LoginModule. (Bug #37311996)

• Implementations of the DatabaseMetaData methods have been revised in order to refactor code, increase performance, and prevent potential problems with quotes in identifiers. (WL #16723)

• A number of methods that were missing from the DatabaseMetaDataUsingInfoSchema class have now been implemented:

  • getBestRowIdentifier()

  • getCatalogs()

  • getSchemas()

  • getSchemas()

  • getTablePrivileges()

  They are similar to their counterparts in the DatabaseMetaData class, but they query the INFORMATION_SCHEMA for the information they provide. (WL #16756)

Bugs Fixed

• Some update methods in UpdatableResultSet did not check the validity of the cursor position used, resulting in a NullPointerException when the cursor position was invalid. This patch puts in proper checks so that a proper exception is thrown instead in such situations. (Bug #20802830)

• When using a CallableStatement to execute a stored procedure, a MySQLSyntaxErrorException was thrown if any parameter names contained an escaped character. (Bug #20279671)

• Calling get methods for CallableStatements resulted occasionally in ArrayIndexOutOfBoundsExceptions due to mismatches between the placeholder indexes and parameter indexes. (Bug #19857207)

• Connector/J failed to validate properly the index parameter of the get methods for CallableStatements, so that an improper index value was not caught when the methods were called, resulting in ArrayIndexOutOfBoundsExceptions. (Bug #19829452)

• UpdatableResultSet did not map correctly and set the values for primary keys when refreshing rows, resulting in createSQLExceptions. (Bug #117294, Bug #37523180)

• The matching of numeric values was inefficient in some of the value factories. The efficiency for matching has now been improved using precompiled patterns. (Bug #117027, Bug #37415840)