1. install JBoss EAP 8.0.3 $ unzip jboss-eap-8.0.0.zip $ unzip jboss-eap-8.0.3-maven-repository.zip $ cd jboss-eap-8.0 $ bin/jboss-eap-installation-manager.sh update perform --offline --repositories=file:/home/test/jboss-eap-8.0.3.GA-maven-repository/maven-repository/ --yes 2. create org.postgresql driver module $ mkdir -p modules/org/postgresql/main $ cp postgresql-42.7.4.jar modules/org/postgresql/main/ $ cat <<EOF > modules/org/postgresql/main/module.xml <?xml version= "1.0" encoding= "UTF-8" ?> <module xmlns= "urn:jboss:module:1.9" name= "org.postgresql" > <resources> <resource-root path= "postgresql-42.7.4.jar" /> </resources> <dependencies> <module name= "wildflyee.api" /> <module name= "sun.jdk" /> <module name= "ibm.jdk" /> <module name= "javax.api" /> </dependencies> </module> EOF 3. add driver to standalone.xml $ diff -u standalone.xml.original standalone.xml --- standalone.xml.original 2024-10-01 11:39:48.414416750 +0900 +++ standalone.xml 2024-10-01 14:22:28.581022147 +0900 @@ -137,6 +137,9 @@ <driver name= "h2" module= "com.h2database.h2" > <xa-datasource-class> ;org.h2.jdbcx.JdbcDataSource </xa-datasource-class> </driver> + <driver name= "postgresql" module= "org.postgresql" > + <xa-datasource-class> org.postgresql.xa.PGXADataSource </xa-datasource-class> + </driver> </drivers> </datasources> </subsystem> 4. add a management user to access web console $ bin/add-user.sh -u admin -p StrongPass1! 5. start JBoss EAP 8.0.3 $ bin/standalone.sh 6. access http://localhost:9990/ with brower, then open a Add XA Datasource wizard [Configuration] - [Subsystems] - [Datasource & Drivers] - [Datasources] - click + button - Add XA Datasource wizard 7. Put following parameters to the wizard Choose Template: PostgreSQL Attributes: Name: PostgresXADS JNDI Name: java:/PostgresXADS JDBC Driver: Driver Name: postgresql Driver XA Datasource Class: org.postgresql.xa.PGXADataSource XA Properties: serverName=127.0.0.1 portNumber=5432 databaseName=postgres Connection: User Name: postgres Password: postgres 8. click Test connection, but it will fail. Because XA propery <DatabaseName> added by the wizard by default even if databaseName=postgres is set in the wizard: <xa-datasource jndi-name= "java:/PostgresXADS" pool-name= "PostgresXADS" > <xa-datasource-property name= "&lt;DatabaseName&gt;" > <<== postgresdb <<== </xa-datasource-property> <<== <xa-datasource-property name= "serverName" > 127.0.0.1 </xa-datasource-property> <xa-datasource-property name= "portNumber" > 5432 </xa-datasource-property> <xa-datasource-property name= "databaseName" > postgres </xa-datasource-property> <xa-datasource-class> org.postgresql.xa.PGXADataSource </xa-datasource-class> <driver> postgresql </driver> <security> <user-name> postgres </user-name> <password> postgres </password> </security> <validation> <valid-connection-checker class-name= "org.jboss.jca.adapters.jdbc.extensions.postgres.PostgreSQLValidConnectionChecker" /> <validate-on-match> true </validate-on-match> <exception-sorter class-name= "org.jboss.jca.adapters.jdbc.extensions.postgres.PostgreSQLExceptionSorter" /> </validation> </xa-datasource>