I'm trying to add c3p0 connection pool to our existing hibernate configuration.
But it has no affect and hibernate still uses default pool.
Hibernate Configuration alone is working fine so i am absolutely sure no problem with it.
Wondering if someone here can point my mistake Or suggest how i can debug the problem ?
I do not use Spring framework.
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">com.ibm.db2.jcc.DB2Driver</property>
<property name="hibernate.connection.password">passwd</property>
<property name="hibernate.connection.url">jdbc:db2://server:port/database</property>
<property name="hibernate.connection.username">username</property>
<property name="hibernate.cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
<property name="hibernate.connection.autocommit">false</property>
<property name="hibernate.current_session_context_class">thread</property>
<property name="hibernate.default_schema">DB Schema</property>
<property name="hibernate.dialect">org.hibernate.dialect.DB2Dialect</property>
<property name="hibernate.format_sql">false</property>
<property name="hibernate.max_fetch_depth">4</property>
<property name="hibernate.search.autoregister_listeners">false</property>
<property name="hibernate.show_sql">false</property>
<property name="hibernate.connection.isolation">1</property>
<property name="hibernate.jdbc.batch_size">50</property>
<property name="hibernate.c3p0.min_size">5</property>
<property name="hibernate.c3p0.max_size">20</property>
<property name="hibernate.c3p0.timeout">3000</property>
<property name="hibernate.c3p0.max_statements">50</property>
<property name="hibernate.c3p0.idle_test_period">900</property>
<mapping resource="table.hbm.xml" />
</session-factory>
</hibernate-configuration>
Here are the jars i have:
hibernate3.jar
hibernate-c3p0-3.5.0-Final.jar
Statements from the logs:
hibernate.cfg.Environment - Hibernate 3.5.0-Final
INFO ManagerConnectionProvider - Using Hibernate built-in connection pool (not for production use!)
INFO ManagerConnectionProvider - Hibernate connection pool size: 20
Try configuring a connection provider class from c3p0.
<property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
Also, it's better to add the hibernate configuration doctype, which will help in finding any typos.
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
UPDATE
You need to include the mchange library in your classpath. This link might helpful to you.
Related
I am using a 5.4.15.Final version of hibernate. When I am running my application in create mode it is not dropped and create the tables. Is there any way I can do it? I remember I was able to do the same in older version(don't exactly remember the version). My hibernate.cfg.xml file is below:
hibernate.cfg.xml
<?xml version = "1.0" encoding = "utf-8"?>
<!DOCTYPE hibernate-configuration SYSTEM "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
<property name="hibernate.connection.url">jdbc:postgresql://localhost:5432/test</property>
<property name="hibernate.connection.username">postgres</property>
<property name="hibernate.connection.password">root</property>
<property name="hibernate.connection.pool_size">5</property>
<property name="hibernate.hbm2ddl.auto">create</property>
<property name="hibernate.default_schema">test</property>
<property name="hibernate.current_session_context_class">thread</property>
<property name="hibernate.show_sql">true</property>
<property name="output.record.batch.size">10</property>
<property name="javax.persistence.schema-generation.create-source">metadata</property>
<property name="javax.persistence.schema-generation.scripts.action">create</property>
<property name="javax.persistence.schema-generation.database.action">create</property>
<property name="hibernate.hbm2dll.create_namespaces">true</property>
<property name="javax.persistence.schema-generation.scripts.create-target">sql/executors_create.sql</property>
<property name="hibernate.dialect">org.hibernate.dialect.PostgreSQL81Dialect</property>
</session-factory>
</hibernate-configuration>
I am creating the sessionFactory object as below:
SessionFactory sessionFactory = new Configuration().configure().addAnnotatedClass(Test.class).buildSessionFactory();
Is there any way to solve this?
Whenever I run my server my database table are re-created and all my previous data are being deleted. I was thinking this might be the problem in hibernate configuration file but don't know the actual reason hope you awesome guys will figure me out .
I also tried changing <property name="hibernate.hbm2ddl.auto">update</property> to auto , validate but didnot help
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration SYSTEM
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</property>
<property name="hibernate.connection.driver_class">
com.mysql.jdbc.Driver
</property>
<property name="hibernate.show_sql">true</property>
<property name="hibernate.format_sql">true</property>
<!-- Assume test is the database name -->
<property name="hibernate.connection.url">
jdbc:mysql://localhost:3306/restro
</property>
<property name="hibernate.connection.username">
root
</property>
<property name="hibernate.connection.password">
root
</property>
<!-- <property name="connection.release_mode">auto</property> -->
<!-- Drop and re-create the database schema on startup -->
<property name="hibernate.hbm2ddl.auto">update</property>
<!-- Names the annotated entity class -->
<mapping class="com.restroo.model.MenuItems"/>
<mapping class="com.restroo.model.AdminUser"/>
</session-factory>
</hibernate-configuration>
hibernate.cfg
<session-factory>
<property name="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</property>
<property name="hibernate.current_session_context_class">thread</property>
<property name="hibernate.ogm.datastore.provider">MONGODB</property>
<property name="hibernate.ogm.mongodb.database">rcfdb</property>
<property name="hibernate.ogm.mongodb.host">127.0.0.1</property>
<property name="hibernate.ogm.mongodb.port">27017</property>
<property name="hibernate.search.default.directory_provider">filesystem</property>
<property name="hibernate.search.default.indexBase">./Indexes</property>
<property name="hibernate.search.default.locking_strategy">single</property>
<mapping resource="beanDao.hbm.xml"/>
</session-factory>
Getting error with the above hibernate.cfg. Unable to connect to mongoDB.
As pointed out in the comments, you need to set the credentials and the authentication database; these are the properties:
hibernate.ogm.datastore.username
hibernate.ogm.datastore.password
hibernate.ogm.mongodb.authentication_database
You can find the list of properties for MongoDB in the official Hibernate OGM documentation: https://docs.jboss.org/hibernate/stable/ogm/reference/en-US/html_single/#_configuring_mongodb
Does anybody know about the hibernate configurations file (hibernate.cfg.xml), what are the "connection" properties - without the "hibernate" prefix - used for?
I mean, why do those properties (such as connection.url, connection.usermame...) exist?
<hibernate-configuration>
<session-factory>
<property name="connection.driver_class">org.postgresql.Driver</property>
...
<property name="connection.url">SOME_URL</property>
<property name="hibernate.connection.url">SOME_URL</property>
<property name="connection.username">SOME_USER</property>
<property name="hibernate.connection.username">SOME_USER</property>
...
Why can I use the both connection.url and hibernate.connection.url ?
ANSWER:
Ok, I believe those properties (without the hibernate. prefix) exist just for backward compatibility with configuration files of older hibernate versions.
Thanks.
The hibernate.connection.url is use to connect the database url following is the configuration setting for hibernate . Hope It will help you.
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/youdb</property>
<property name="hibernate.connection.username">user</property>
<property name="hibernate.connection.password">password</property>
<property name="hibernate.hbm2ddl.auto">update</property>
<property name="hibernate.show_sql">true</property>
<mapping resource="emp/dto/Employee.hbm.xml"/>
I'm trying to set up Hibernate, and since 4.0.0 just came out I naturally decided to go with that. It seems that no matter what way I try to create a SessionFactory, it always leads to the same error:
Initial SessionFactory creation failed.java.util.ServiceConfigurationError: org.hibernate.integrator.spi.Integrator: Provider org.hibernate.envers.event.EnversIntegrator could not be instantiated: java.lang.ClassCastException: Cannot cast org.hibernate.envers.event.EnversIntegrator to org.hibernate.integrator.spi.Integrator
It seems like there is something wrong with my Hibernate configuration but I can't figure out what. Here's my hibernate.cfg.xml:
<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<!-- Database connection settings -->
<property name="connection.driver_class">org.postgresql.Driver</property>
<property name="connection.url">jdbc:postgresql://192.168.0.17:5432/mydb</property>
<property name="connection.username">myusrname</property>
<property name="connection.password">mypasswd</property>
<!-- JDBC connection pool (use the built-in) -->
<property name="connection.pool_size">1</property>
<!-- c3p0 configuration -->
<property name="hibernate.c3p0.min_size">5</property>
<property name="hibernate.c3p0.max_size">20</property>
<property name="hibernate.c3p0.timeout">300</property>
<property name="hibernate.c3p0.max_statements">50</property>
<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.PostgreSQLDialect</property>
<!-- Disable the second-level cache -->
<property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property>
<!-- Echo all executed SQL to stdout -->
<property name="show_sql">false</property>
<!-- Drop and re-create the database schema on startup -->
<property name="hbm2ddl.auto">create</property>
</session-factory>
</hibernate-configuration>
Does anyone spot anything out of the ordinary, or do you have other ideas?
I found no way to get Hibernate 4.0.0 CR4 working. Switching to 3.6.7 resolved the problem and works just fine. I conclude that there must be some bug in the release, and will file a bug report.