How to Fix the \'The Server Time Zone Value \'AEST\' is Unrecognized\' Error in Hibernate?

Fixing "The Server Time Zone Value 'AEST' is Unrecognized" Issue in Hibernate

The error "The server time zone value 'AEST' is unrecognized or represents more than one time zone" occurs when MySQL cannot recognize the server's time zone and the JDBC driver lacks explicit time zone configuration. To resolve this issue:

1. Specify Server Time Zone in Connection URL:

Add the serverTimezone parameter to your JDBC connection URL. This parameter specifies the time zone that MySQL should use. In this case, you can set the time zone to 'UTC' or 'Australia/Melbourne' based on the default time zone printed by System.out.println(TimeZone.getDefault()).

jdbc:mysql://localhost:3306/database?serverTimezone=UTC

2. Configure serverTimezone in Hibernate Properties:

Within your Hibernate configuration file (usually hibernate.cfg.xml), add the following property:

<property name="hibernate.connection.serverTimezone">UTC</property>

3. Upgrade MySQL Connector:

If you are using an older version of the MySQL Connector, it may not fully support time zone management. Try upgrading to a newer version (e.g., 8.0 or higher) for improved compatibility.

4. Ensure Server Time Zone is Recognized:

Make sure the time zone specified in the serverTimezone parameter is recognized and supported by the MySQL server. Verify this by executing the following query in MySQL:

SELECT * FROM mysql.time_zone WHERE name = 'UTC';

5. Enable JDBC Time Zone Support:

In rare cases, the JDBC driver may require additional configuration to fully support time zones. Consult the driver's documentation (e.g., [MySQL Connector J](https://dev.mysql.com/doc/connector-j/en/connector-j-reference-configuration-properties.html)) for specific instructions.

Note: It is generally recommended to use a specific time zone (e.g., 'UTC') instead of a shortened or ambiguous one (e.g., 'AEST') to avoid potential issues like daylight saving time transitions.

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