Atomikos's Documentation webThe Documentation webhttps://www.atomikos.com/DocumentationCopyright 2026 Atomikos BVBA
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HowToDowngradehttps://www.atomikos.com/Documentation/HowToDowngrade2026-03-24T13:14:55+01:00CAUTION: by downgrading, you loose: 1. 100 bug fixes available in Main.ExtremeTransactions (downgrading is like injecting 100 bugs into your project) 1. A… (last changed by GuyPardon)GuyPardonConcurrencyModelhttps://www.atomikos.com/Documentation/ConcurrencyModel2025-05-06T17:33:58+02:00This page explains the most important things you need to understand about concurrent threads and their activities that could interfere (or not). Important Thread… (last changed by GuyPardon)GuyPardonSpringBootIntegrationhttps://www.atomikos.com/Documentation/SpringBootIntegration2025-04-03T14:34:40+02:00TransactionsEssentials 6.0 and higher In our 6.0 we support Spring Boot 2, 3 and 3.4. Spring Boot 2 com.atomikos transactions spring boot starter… (last changed by GuyPardon)GuyPardonConfiguringMQSerieshttps://www.atomikos.com/Documentation/ConfiguringMQSeries2024-11-15T15:29:42+01:00You can use Atomikos and IBM MQ for JMS/XA messaging. To do so, please follow the configuration instructions outlined below. NOTE: these instructions have been te… (last changed by GuyPardon)GuyPardonThreadPoolinghttps://www.atomikos.com/Documentation/ThreadPooling2024-03-22T10:02:48+01:00Thread pooling is in package com.atomikos.icatch.imp.thread. The diagram below shows the design behind the thread pooling mechanism. (last changed by GuyPardon)GuyPardonSessionHandleStatehttps://www.atomikos.com/Documentation/SessionHandleState2024-03-22T10:01:19+01:00The SessionHandleState class (package com.atomikos.datasource.xa.session) tracks the XA enlistment history of a JDBC or JMS connection/session handle. This class … (last changed by GuyPardon)GuyPardonJmsConnectionClasseshttps://www.atomikos.com/Documentation/JmsConnectionClasses2024-03-22T10:01:04+01:00Class Diagram Overview The JMS connection class design is shown below. AtomikosJmsPooledConnection States The relevant states of the JMS connection are shown bel… (last changed by GuyPardon)GuyPardonBorrowConnectionFromPoolhttps://www.atomikos.com/Documentation/BorrowConnectionFromPool2024-03-22T10:00:46+01:00The figure below shows the logic to borrow a connection from the pool. (last changed by GuyPardon)GuyPardonCheckConnectionsInPoolhttps://www.atomikos.com/Documentation/CheckConnectionsInPool2024-03-22T10:00:14+01:00The pool regularly checks the pooled connections as shown below. (last changed by GuyPardon)GuyPardonJdbcConnectionPoolingClasseshttps://www.atomikos.com/Documentation/JdbcConnectionPoolingClasses2024-03-22T09:59:58+01:00The figure below illustrates the connection pooling classes in package com.atomikos.jdbc.internal. (last changed by GuyPardon)GuyPardonJdbcClasseshttps://www.atomikos.com/Documentation/JdbcClasses2024-03-22T09:59:42+01:00The figure below shows the overview of the JDBC classes (in package com.atomikos.jdbc and subpackages). (last changed by GuyPardon)GuyPardonPreventingDeadlockshttps://www.atomikos.com/Documentation/PreventingDeadlocks2024-03-22T09:59:02+01:00Transaction Specific Threads What Causes Deadlock? In Java, deadlocks are most commonly caused by synchronized blocks of code. In particular, deadlock can happen… (last changed by GuyPardon)GuyPardonTransactionsEssentialsArchitecturehttps://www.atomikos.com/Documentation/TransactionsEssentialsArchitecture2024-03-22T09:58:14+01:00Core * ThreadPooling * TransactionLogging * PreventingDeadlocks * ConcurrencyModel JDBC * JdbcClasses * JdbcConnectionPoolingClasses * CheckCo… (last changed by GuyPardon)GuyPardonHowToHandleVulnerableDependencyWarningshttps://www.atomikos.com/Documentation/HowToHandleVulnerableDependencyWarnings2024-03-22T09:23:56+01:00Recent Atomikos releases will do a courtesy scan of your application's classpath to detect known vulnerable dependencies. This is a best effort scan based on the … (last changed by MichaelDaum)MichaelDaumConfiguringYourSubscriptionhttps://www.atomikos.com/Documentation/ConfiguringYourSubscription2024-03-22T09:23:25+01:00Why Subscription Files? In the past we have had installations that were moved to a different team, with contacts who were unknown to us. When they applied for sup… (last changed by MichaelDaum)MichaelDaumJtaPropertieshttps://www.atomikos.com/Documentation/JtaProperties2024-03-12T05:41:40+01:00Looking for the perfect configuration that avoids issues and maximises performance? Our commercial support can help! Click the button to start your free trial tod… (last changed by GuyPardon)GuyPardon