HikariCP空闲连接以活动状态留在连接池中

Question

spring.datasource.hikari.minimumIdle=1
spring.datasource.hikari.maximumPoolSize=20
spring.datasource.hikari.idleTimeout=30000
spring.datasource.hikari.poolName=SpringBootJPAHikariCP
spring.datasource.hikari.maxLifetime=50000
spring.datasource.hikari.connectionTimeout=30000

SpringBootJPAHikariCP - configuration:
 allowPoolSuspension.............false
 autoCommit......................true
 catalog.........................none
 connectionInitSql...............none
 connectionTestQuery.............none
 connectionTimeout...............30000
 dataSource......................none
 dataSourceClassName.............none
 dataSourceJNDI..................none
 dataSourceProperties............{password=<masked>}
 driverClassName................."org.postgresql.Driver"
 healthCheckProperties...........{}
 healthCheckRegistry.............none
 idleTimeout.....................30000
 initializationFailFast..........true
 initializationFailTimeout.......1
 isolateInternalQueries..........false
 jdbc4ConnectionTest.............false
 jdbcUrl.........................jdbc:postgresql://localhost:5432/dbname
 leakDetectionThreshold..........0
 maxLifetime.....................50000
 maximumPoolSize.................20
 metricRegistry..................none
 metricsTrackerFactory...........none
 minimumIdle.....................1
 password........................<masked>
 poolName........................"SpringBootJPAHikariCP"
 readOnly........................false
 registerMbeans..................false
 scheduledExecutor...............none
 scheduledExecutorService........internal
 schema..........................none
 threadFactory...................internal
 transactionIsolation............default
 username........................"postgres"
 validationTimeout...............5000

28 22:19:35- DEBUG - o.s.orm.jpa.JpaTransactionManager-371 ::  Opened new EntityManager [org.hibernate.jpa.internal.EntityManagerImpl@4212be39] for JPA transaction
28 22:19:35- DEBUG - o.h.e.t.internal.TransactionImpl-51 ::  begin
28 22:19:35- DEBUG - o.s.orm.jpa.JpaTransactionManager-403 ::  Exposing JPA transaction as JDBC transaction [org.springframework.orm.jpa.vendor.HibernateJpaDialect$HibernateConnectionHandle@243e942]
2com.someentity.MyEntity#ac918eed-345f-4a6c-8539-fe14e7fc41e2
28 22:19:35- DEBUG - o.h.r.j.i.LogicalConnectionManagedImpl-137 ::  Initiating JDBC connection release from afterTransaction
28 22:19:35- DEBUG - c.zaxxer.hikari.pool.ProxyConnection-242 ::  SpringBootJPAHikariCP - Executed rollback on connection org.postgresql.jdbc.PgConnection@1344bbf1 due to dirty commit state on close().
28 22:19:35- DEBUG - o.h.e.i.AbstractFlushingEventListener-132 ::  Processing flush-time cascades
28 22:19:35- DEBUG - o.h.e.i.AbstractFlushingEventListener-174 ::  Dirty checking collections

28 22:19:35- DEBUG - org.hibernate.internal.SessionImpl-508 ::  Disconnecting session
28 22:19:35- DEBUG - o.s.orm.jpa.JpaTransactionManager-759 ::  Initiating transaction commit
28 22:19:35- DEBUG - o.s.orm.jpa.JpaTransactionManager-512 ::  Committing JPA transaction on EntityManager [org.hibernate.jpa.internal.EntityManagerImpl@4212be39]
28 22:19:35- DEBUG - o.h.e.t.internal.TransactionImpl-62 ::  committing
28 22:19:35- DEBUG - o.h.r.j.i.LogicalConnectionManagedImpl-137 ::  Initiating JDBC connection release from afterTransaction
28 22:19:35- DEBUG - o.h.r.j.i.LogicalConnectionManagedImpl-137 ::  Initiating JDBC connection release from afterTransaction
28 22:19:35- DEBUG - o.s.orm.jpa.JpaTransactionManager-600 ::  Closing JPA EntityManager [org.hibernate.jpa.internal.EntityManagerImpl@4212be39] after transaction
28 22:19:35- DEBUG - o.s.o.jpa.EntityManagerFactoryUtils-435 ::  Closing JPA EntityManager

>

可能是我有这个确切的问题https://github.com/brettwooldridge/hikaricp/issues/109在我的例子中，活动连接随着每个事务的增加而增加。

HikariCP-连接不可用这也是一个相同的问题。但没有人对此提供明确的解决方案。顺便说一句，我使用了begging中的@transactional。

Answer 1

这不是任何光的问题，有一个错误在我的结尾。还在发布这件事发生的细节，以防万一对某人有帮助。

我使用的是Spring Boot1.5.6（这是我开始工作时的最新版本）。该版本包含spring-orm 4.3.1。此版本的Spring-orm支持三个版本的hibernate:Hibernate5、Hibernate4和Hibernate3。

因此，我使用current_session_context_class的贝叶斯配置来配置spring boot。

spring.jpa.properties.hibernate.current_session_context_class=org.springframework.orm.hibernate4.SpringSessionContext

org.springframework.orm.hibernate4.SpringSessionContext

org.springframework.orm.hibernate5.SpringSessionContext

问题马上就解决了。

我的当前配置是

spring.jpa.properties.hibernate.current_session_context_class=org.springframework.orm.hibernate5.SpringSessionContext
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.PostgreSQL95Dialect

注意，解决问题后切换到Spring引导2。