There are currently four versions of MySQL Connector/J available:
Connector/J 5.1 is the Type IV pure Java JDBC driver and
provides compatibility with all the functionality of MySQL,
including 4.1, 5.0, 5.1 and the 6.0 alpha release featuring
the new Falcon storage engine. Connector/J 5.1 provides ease
of development features, including auto-registration with the
Driver Manager, standardized validity checks, categorized
SQLExceptions, support for the JDBC-4.0 XML processing, per
connection client information, NCHAR,
NVARCHAR and NCLOB
types. This release also includes all bug fixes up to and
including Connector/J 5.0.6.
Connector/J 5.0 provides support for all the functionality
offered by Connector/J 3.1 and includes distributed
transaction (XA) support.
Connector/J 3.1 was designed for connectivity to MySQL 4.1 and
MySQL 5.0 servers and provides support for all the
functionality in MySQL 5.0 except distributed transaction (XA)
support.
Connector/J 3.0 provides core functionality and was designed
with connectivity to MySQL 3.x or MySQL 4.1 servers, although
it will provide basic compatibility with later versions of
MySQL. Connector/J 3.0 does not support server-side prepared
statements, and does not support any of the features in
versions of MySQL later than 4.1.
The current recommended version for Connector/J is 5.1. This guide
covers all three connector versions, with specific notes given
where a setting applies to a specific option.
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