This property controls how frequently HikariCP will attempt to keep a connection alive, in order to prevent it from being timed out by the database or network infrastructure. This value must be less than themaxLifetimevalue. A "keepalive" will only occur on an idle connection. When the tim...
java.lang.Exception: Apparent connection leak detected at scala.slick.jdbc.JdbcBackend$DatabaseFactoryDef$$anon$3.createConnection(JdbcBackend.scala:47) ~[rule-engine-sparrowdesk.jar:na] 2018-07-20 13:37:37 INFO ProxyLeakTask {com.zaxxer.hikari.pool.ProxyLeakTask cancel} -Previously reported le...
This property controls how frequently HikariCP will attempt to keep a connection alive, in order to prevent it from being timed out by the database or network infrastructure. This value must be less than themaxLifetimevalue. A "keepalive" will only occur on an idle connection. When the tim...
Q: How to I encrypt database passwords with HikariCP? Q: What about "pool-locking" (deadlocking)? Q: Can I change the username/password or other pool properties at runtime? Q: PostgreSQL throws an exception statingsetQueryTimeout(int) is not yet implemented, how do I fix it?
shutdown() or close() is essential at application termination, otherwise you will leave database resources in use. Most IoC containers (Spring, JBoss, Hibernate, Tomcat) have a way to invoke a "destroy" method. Somewhat riskier, but still workable, is to set minimumIdle connections to 0, ...
There is no property available on HikariDataSource for databaseName when using the recommended dataSourceClassName approach rather than a JDBC URL. With Postgres, this results in: Caused by: org.postgresql.util.PSQLException: FATAL: database "null" does not exist It can be injected via data...
Take this database table: CREATETABLEcustomer( customer_idINTEGERNOT NULLGENERATED BY DEFAULTASIDENTITY, last_nameVARCHAR(255), first_nameVARCHAR(255), emailVARCHAR(255) ); Let's imagine a Java class that reflects the table in a straight-forward way, and contains some JPA (javax.persistence)...
Windows 8.1 HikariCP version: 2.5.1 JDK version : 1.7.0_79 Database : MySQL| 5.5.57 Apache Tomcat 7 Eclipse IDE: While saving the details from jsp, system throws following error in console 'Failed to initialize' the pool and "Too many co...
dataSource.useServerPrepStmts=true registerMbeans=true Environment HikariCP version : 2.7.8 JDK version : 1.8.0_131 Database : PostgreSQL Driver version : 42.2.1 Spring version : 4.2.1.RELEASE Hibernate version : 4.3.10.Final Tomcat version : 8.0.41 ...
We never cease to amaze at the in-house web applications we've encountered, with a few dozen front-end users performing periodic activity, and a connection pool of 100 connections. Don't over-provision your database. The prospect of "pool-locking" has been raised with respect to single act...