Hibernate and JPA Connection Issues

• [Solved] java.lang.IllegalStateException: The file is locked
• [Solved] org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when ‘hibernate.dialect’ not set
• [Solved] org.h2.jdbc.JdbcSQLNonTransientConnectionException: Database may be already in use: null

Database Constraints Violation Issues

• [Solved] org.springframework.dao. DataIntegrityViolationException: could not execute statement
• [Solved] org.h2.jdbc. JdbcSQLIntegrityConstraintViolationException: Unique index or primary key violation
• [Solved] org.springframework.dao. DataIntegrityViolationException: PreparedStatementCallback -Data truncation