JPA Hibernate Persistence exception [PersistenceUnit: default] Unable to build Hibernate SessionFactory

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JPA Hibernate Persistence exception [PersistenceUnit: default] Unable to build Hibernate SessionFactory

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  1. JPA Hibernate Persistence exception [PersistenceUnit: default] Unable to build Hibernate SessionFactory

    The issue is that you are not able to get a connection to MYSQL database and hence it is throwing an error saying that cannot build a session factory.
    Please see the error below:
    Caused by: java.sql.SQLException: Access denied for user ''@'localhost' (using password: NO)

  2. JPA Hibernate Persistence exception [PersistenceUnit: default] Unable to build Hibernate SessionFactory

    The issue is that you are not able to get a connection to MYSQL database and hence it is throwing an error saying that cannot build a session factory.
    Please see the error below:
    Caused by: java.sql.SQLException: Access denied for user ''@'localhost' (using password: NO)

Solution 1

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The issue is that you are not able to get a connection to MYSQL database and hence it is throwing an error saying that cannot build a session factory.

Please see the error below:

 Caused by: java.sql.SQLException: Access denied for user ''@'localhost' (using password: NO) 

which points to username not getting populated.

Please recheck system properties

dataSource.setUsername(System.getProperty("root"));

some packages seems to be missing as well pointing to a dependency issue:

package org.gjt.mm.mysql does not exist

Please run a mvn dependency:tree command to check for dependencies

Original Author shankarsh15 Of This Content

Solution 2

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I was getting this error even when all the relevant dependencies were in place because I hadn’t created the schema in MySQL.

I thought it would be created automatically but it wasn’t. Although the table itself will be created, you have to create the schema.

Original Author Himanshu Shukla Of This Content

Solution 3

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Got this error due to a mistake in a named query.

Original Author user11883568 Of This Content

Solution 4

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I found some issue about that kind of error

  1. Database username or password not match in the mysql or other other database. Please set application.properties like this

  

# ===============================
# = DATA SOURCE
# ===============================

# Set here configurations for the database connection

# Connection url for the database please let me know “[email protected]
spring.datasource.url = jdbc:mysql://localhost:3306/bookstoreapiabc

# Username and secret
spring.datasource.username = root
spring.datasource.password =

# Keep the connection alive if idle for a long time (needed in production)
spring.datasource.testWhileIdle = true
spring.datasource.validationQuery = SELECT 1

# ===============================
# = JPA / HIBERNATE
# ===============================

# Use spring.jpa.properties.* for Hibernate native properties (the prefix is
# stripped before adding them to the entity manager).

# Show or not log for each sql query
spring.jpa.show-sql = true

# Hibernate ddl auto (create, create-drop, update): with “update” the database
# schema will be automatically updated accordingly to java entities found in
# the project
spring.jpa.hibernate.ddl-auto = update

# Allows Hibernate to generate SQL optimized for a particular DBMS
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect

Issue no 2.

Your local server has two database server and those database server conflict. this conflict like this mysql server & xampp or lampp or wamp server. Please one of the database like mysql server because xampp or lampp server automatically install mysql server on this machine

Original Author Md. Maidul Islam Of This Content

Conclusion

So This is all About This Tutorial. Hope This Tutorial Helped You. Thank You.

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Siddharth

I am an Information Technology Engineer. I have Completed my MCA And I have 4 Year Plus Experience, I am a web developer with knowledge of multiple back-end platforms Like PHP, Node.js, Python and frontend JavaScript frameworks Like Angular, React, and Vue.

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