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    Make sure you are using InnoDB storage engine and READ-COMMITTED transaction isolation level and increase the database server innodb_lock_wait_timeout variable to about 500.

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via grokbase.com by Unknown author, 1 year ago
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Access denied for user 'root'@'localhost' (using password: NO)
java.sql.SQLException: Access denied for user 'root'@'localhost' (usingpassword: YES) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1086) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4237) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4169)