https://www.atomikos.com/Documentation The Documentation web of Foswiki. Foswiki is a Web-Based Collaboration Platform for the Enterprise. en-us Copyright 2026 Atomikos BVBA Wiki Administrator [webmaster@atomikos.com] The contributing authors of Atomikos Atomikos https://www.atomikos.com/Documentation https://www.atomikos.com/pub/System/ProjectLogos/foswiki-logo.png https://www.atomikos.com/Documentation/HowToDowngrade CAUTION: 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) 2026-03-24T13:14:55+01:00 GuyPardon https://www.atomikos.com/Documentation/ConcurrencyModel This 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) 2025-05-06T17:33:58+02:00 GuyPardon https://www.atomikos.com/Documentation/SpringBootIntegration TransactionsEssentials 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) 2025-04-03T14:34:40+02:00 GuyPardon https://www.atomikos.com/Documentation/ConfiguringMQSeries You 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) 2024-11-15T15:29:42+01:00 GuyPardon https://www.atomikos.com/Documentation/ThreadPooling Thread pooling is in package com.atomikos.icatch.imp.thread. The diagram below shows the design behind the thread pooling mechanism. (last changed by GuyPardon) 2024-03-22T10:02:48+01:00 GuyPardon https://www.atomikos.com/Documentation/SessionHandleState The 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) 2024-03-22T10:01:19+01:00 GuyPardon https://www.atomikos.com/Documentation/JmsConnectionClasses Class 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) 2024-03-22T10:01:04+01:00 GuyPardon https://www.atomikos.com/Documentation/BorrowConnectionFromPool The figure below shows the logic to borrow a connection from the pool. (last changed by GuyPardon) 2024-03-22T10:00:46+01:00 GuyPardon https://www.atomikos.com/Documentation/CheckConnectionsInPool The pool regularly checks the pooled connections as shown below. (last changed by GuyPardon) 2024-03-22T10:00:14+01:00 GuyPardon https://www.atomikos.com/Documentation/JdbcConnectionPoolingClasses The figure below illustrates the connection pooling classes in package com.atomikos.jdbc.internal. (last changed by GuyPardon) 2024-03-22T09:59:58+01:00 GuyPardon https://www.atomikos.com/Documentation/JdbcClasses The figure below shows the overview of the JDBC classes (in package com.atomikos.jdbc and subpackages). (last changed by GuyPardon) 2024-03-22T09:59:42+01:00 GuyPardon https://www.atomikos.com/Documentation/PreventingDeadlocks Transaction 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) 2024-03-22T09:59:02+01:00 GuyPardon https://www.atomikos.com/Documentation/TransactionsEssentialsArchitecture Core * ThreadPooling * TransactionLogging * PreventingDeadlocks * ConcurrencyModel JDBC * JdbcClasses * JdbcConnectionPoolingClasses * CheckCo… (last changed by GuyPardon) 2024-03-22T09:58:14+01:00 GuyPardon https://www.atomikos.com/Documentation/HowToHandleVulnerableDependencyWarnings Recent 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) 2024-03-22T09:23:56+01:00 MichaelDaum https://www.atomikos.com/Documentation/ConfiguringYourSubscription Why 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) 2024-03-22T09:23:25+01:00 MichaelDaum https://www.atomikos.com/Documentation/JtaProperties Looking 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) 2024-03-12T05:41:40+01:00 GuyPardon