Running EAP 6.3.0.ER2 where bz#1036739 is fixed. The transaction subsystem causes the server fails to start (is halted) when just process-id-uuid is set to false without specifying the process-id-socket-binding. When you run commands: /subsystem=transactions:write-attribute(name=process-id-uuid,value=false) :reload Server fails with exception [1] The transaction subsystem should block changes that causes the server would fail on reload. The user should get information that the process-id-socket-binding has to be set before reload could proceed, i.e., fail the reload operation. I'm putting this on Amos as he was solving the issue 1036739. [1] 11:13:53,630 ERROR [org.jboss.as.server] (Controller Boot Thread) JBAS015956: Caught exception during boot: org.jboss.as.controller.persistence.ConfigurationPersistenceException: JBAS014676: Failed to parse configuration at org.jboss.as.controller.persistence.XmlConfigurationPersister.load(XmlConfigurationPersister.java:141) [jboss-as-controller-7.4.0.Final-redhat-10.jar:7.4.0.Final-redhat-10] at org.jboss.as.server.ServerService.boot(ServerService.java:321) [jboss-as-server-7.4.0.Final-redhat-10.jar:7.4.0.Final-redhat-10] at org.jboss.as.controller.AbstractControllerService$1.run(AbstractControllerService.java:253) [jboss-as-controller-7.4.0.Final-redhat-10.jar:7.4.0.Final-redhat-10] at java.lang.Thread.run(Thread.java:744) [rt.jar:1.7.0_55] Caused by: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[287,17] Message: JBAS014723: Must include one of the following elements: SOCKET, UUID at org.jboss.as.controller.parsing.ParseUtils.missingOneOf(ParseUtils.java:194) [jboss-as-controller-7.4.0.Final-redhat-10.jar:7.4.0.Final-redhat-10] at org.jboss.as.txn.subsystem.TransactionSubsystem14Parser.parseProcessIdEnvironmentElement(TransactionSubsystem14Parser.java:390) at org.jboss.as.txn.subsystem.TransactionSubsystem14Parser.parseCoreEnvironmentElement(TransactionSubsystem14Parser.java:340) at org.jboss.as.txn.subsystem.TransactionSubsystem15Parser.readElement(TransactionSubsystem15Parser.java:59) at org.jboss.as.txn.subsystem.TransactionSubsystem14Parser.readElement(TransactionSubsystem14Parser.java:110) at org.jboss.as.txn.subsystem.TransactionSubsystem14Parser.readElement(TransactionSubsystem14Parser.java:53) at org.jboss.staxmapper.XMLMapperImpl.processNested(XMLMapperImpl.java:110) [staxmapper-1.1.0.Final-redhat-2.jar:1.1.0.Final-redhat-2] at org.jboss.staxmapper.XMLExtendedStreamReaderImpl.handleAny(XMLExtendedStreamReaderImpl.java:69) [staxmapper-1.1.0.Final-redhat-2.jar:1.1.0.Final-redhat-2] at org.jboss.as.server.parsing.StandaloneXml.parseServerProfile(StandaloneXml.java:1035) [jboss-as-server-7.4.0.Final-redhat-10.jar:7.4.0.Final-redhat-10] at org.jboss.as.server.parsing.StandaloneXml.readServerElement_1_4(StandaloneXml.java:469) [jboss-as-server-7.4.0.Final-redhat-10.jar:7.4.0.Final-redhat-10] at org.jboss.as.server.parsing.StandaloneXml.readElement(StandaloneXml.java:145) [jboss-as-server-7.4.0.Final-redhat-10.jar:7.4.0.Final-redhat-10] at org.jboss.as.server.parsing.StandaloneXml.readElement(StandaloneXml.java:107) [jboss-as-server-7.4.0.Final-redhat-10.jar:7.4.0.Final-redhat-10] at org.jboss.staxmapper.XMLMapperImpl.processNested(XMLMapperImpl.java:110) [staxmapper-1.1.0.Final-redhat-2.jar:1.1.0.Final-redhat-2] at org.jboss.staxmapper.XMLMapperImpl.parseDocument(XMLMapperImpl.java:69) [staxmapper-1.1.0.Final-redhat-2.jar:1.1.0.Final-redhat-2] at org.jboss.as.controller.persistence.XmlConfigurationPersister.load(XmlConfigurationPersister.java:133) [jboss-as-controller-7.4.0.Final-redhat-10.jar:7.4.0.Final-redhat-10] ... 3 more 11:13:53,635 FATAL [org.jboss.as.server] (Controller Boot Thread) JBAS015957: Server boot has failed in an unrecoverable manner; exiting. See previous messages for details.
PR sent https://github.com/jbossas/jboss-eap/pull/1472
There is another thing that could be considered connected to setting transaction process-id-* parameter: if you start server with default config (standalone.xml and <uuid/>) and you run command: /subsystem=transactions:write-attribute(name=process-id-socket-binding, value=txn-status-manager) then nothing happens. It means that reload is required but no change in model is done.
Verified on revision EAP 6.4.0.DR13. Now it does not allow to set "process-id-uuid=false" if "process-id-socket-binding" is not defined. "/subsystem=transactions:write-attribute(name=process-id-socket-binding, value=txn-status-manager)" works as well.