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  1. ,
    Expert tip

    MySQL doesn't support some types of characters (such as emojis) with the utf8 encoding. You need to be on MySQL 5.5+ and force utf8mb4 (everywhere, client and server). You can do this sending the query "SET NAMES utf8mb4". Check this https://goo.gl/3E2qzg

  2. ,

    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.

Solutions on the web

via Stack Overflow by Ratha
, 1 year ago
via Stack Overflow by Ratha
, 1 year ago
Transaction TransactionImple < ac, BasicAction: 0:ffffac110002:20d0e287:58255b3a:20c0f3 status: ActionStatus.ABORT_ONLY > is not in a valid state to be invoking cache operations on.
via hivmr.com by Unknown author, 1 year ago
org.hibernate.exception.GenericJDBCException: Could not open connection
via hivmr.com by Unknown author, 1 year ago
org.hibernate.exception.GenericJDBCException: Could not open connection
via hivmr.com by Unknown author, 1 year ago
org.hibernate.exception.GenericJDBCException: Could not open connection
via hivmr.com by Unknown author, 1 year ago
org.hibernate.exception.GenericJDBCException: Could not open connection
java.sql.SQLException: No value specified for parameter 1	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1078)	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:989)	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:975)