Mysql jdbc connector 5.0.8 compatibility

#Mysql jdbc connector 5.0.8 compatibility update

I also used 'autoReconnect=true' in the Settings.ini file, and the problem was the same. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts,or using the Connector/J connection property 'autoReconnect=true' to avoid this problem. is longer than the server configured value of 'wait_timeout'. The last packet sent successfully to the server was 241,131,104 milliseconds ago. Use in your application, increasing the server configured values for client timД®outs, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.Д®rror updating login .jdbc4.Communications Exception: The last packet successfully received from the server was 241,131,104 milliseД¬onds ago. You should consider either expiring and/or testing connection validity before The last packet sent successfully to the server was 235,283,552 milliseconds ago. If converting your existing tables to InnoDB is not an option, I'm not sure if we'll be able to reliably detect the existence of foreign key relationships between them.Hello every one,I recently studied the server, and recently discovered that when the server is idle, it has exceeded the default 8 hours of connecting to the Mysql database.Д®rror loading characters .jdbc4.CommunicationsД®xception: The last packet successfully received from the server was 235,283,552

In the second case, the foreign key reverse engineering works in the Architect.

This time, the 'show create table' shows us the FK constraint, and the referential integrity was enforced. (`test/child_table`, CONSTRAINT `my_fk` FOREIGN KEY (`parent_id`) REFERENCES `parent_table` (`parent_id`))

#Mysql jdbc connector 5.0.8 compatibility update

Mysql> create table child_table (child_id integer primary key, parent_id integer) engine=InnoDB Д¬ONSTRAINT `my_fk` FOREIGN KEY (`parent_id`) REFERENCES `parent_table` (`parent_id`)Д®RROR 1452 (23000): Cannot add or update a child row: a foreign key constraint fails Mysql> create table parent_table (parent_id integer primary key) engine=InnoDB we were able to insert an orphan record into child_table. The 'show create table' output doesn't say anything about constraints or foreign keysДЈ. Mysql> insert into child_table values (1, 1) Дў. Mysql> alter table child_table add constraint my_fk foreign key (parent_id) references parent_table (parent_id) Mysql> create table child_table (child_id integer primary key, parent_id integer) Mysql> create table parent_table (parent_id integer primary key) Your MySQL connection id is 87477 to server version: 5.0.18 We havebn't been able to determine what this key does, but we know it doesn't enforce referential integrity.

statement executes with no errors on MyISAM tables, but doesn't create a foreign key constraint! It creates a 'key' on the child table, which shows up as an index (not a constraint) in JDBC DatabaseMetaData. The 5.0.19 we set up for testing yesterday was also defaulting everything to MyISAM. All of the tables in our existing MySQL 5.0.18 database were MyISAM. MyISAM is the default storage engine on 5.0.19, so you are probably dealing with MyISAM tables. The good news is, the Architect does support reverse engineering foreign keys in MySQL.Д«ut there is bad news: According to the MySQL 5.0.x documentation, you can only have foreign key relationships on InnoDB tables (not MyISAM). We've done some testing with various versions of MySQL, and we have been able to reproduce your problem. Java MySQL MySQL MySQL Connector/J Java+ MySQL Connector/J + MySQL AbstractTableModel Java + MySQL, Java- MySQL (Java MySQL).