I have been looking at several examples for configuring a datasource for MySQL in Jboss 7. All references i have seen for the element looks like this:
<driver name="com.mysql" module="com.mysql">
<driver-class>com.mysql.jdbc.Driver</driver-class>
<xa-datasource-class>com.mysql.jdbc.jdbc2.optional.MysqlXADataSource</xa-datasource-class>
</driver>
I know what the <driver-class> is but what exactly is the <xa-datasource-class> what is its purpose?
When i configured a datasource on Tomcat before i did not need to specify the xa-datasource for any database. Why is it different here?
Thanks
According to jdbc 4.0 specification (12.2): XA datasources produces XA connections capable to be used in global/distributed transactions. You might need such a connection if you need a transaction to span more than one database or a JMS calls. You can find a clear explanation of the concept here: http://www.theserverside.com/discussions/thread.tss?thread_id=21385#95346
If you don't have such a distributed transactions scenario you don't need to specify a xa-datasource, a simple datasource configuration is enough. So, if you use a simple datasource there is no need to specify a xa-datasource-class when you declare your driver.
<datasources>
<datasource jndi-name="java:/myDatasource" pool-name="MyDS" enabled="true" jta="true" use-java-context="true" use-ccm="true">
<connection-url>
jdbc:mysql://localhost:3306/mydb
</connection-url>
<driver>
mysql
</driver>
<transaction-isolation>
TRANSACTION_READ_COMMITTED
</transaction-isolation>
<pool>
<min-pool-size>
5
</min-pool-size>
<max-pool-size>
10
</max-pool-size>
<prefill>
true
</prefill>
<use-strict-min>
false
</use-strict-min>
<flush-strategy>
FailingConnectionOnly
</flush-strategy>
</pool>
<security>
<user-name>
username
</user-name>
<password>
password
</password>
</security>
</datasource>
<drivers>
<driver name="mysql" module="com.mysql"/>
</drivers>
</datasources>
Related
I've installed MariaDB connector in jBPM 7.53 Final with .jar file and configured MariaDB database locally. Checked in management console and saw that datasources and JDBC connectors look good (MariaDBDS is enabled), but an error showing in runtime "Boot errors occurred during the start of server".
Failure description: {"WFLYCTL0412: Required services that are not
installed:" =>
["jboss.jdbc-driver.mariadb-java-client-2_7_1_jar"],"WFLYCTL0180:
Services with missing/unavailable dependencies" =>
["jboss.driver-demander.java:jboss/MariaDBDS is missing
[jboss.jdbc-driver.mariadb-java-client-2_7_1_jar]","org.wildfly.data-source.MariaDBDS
is missing [jboss.jdbc-driver.mariadb-java-client-2_7_1_jar]"]}
Missing dependencies: jboss.driver-demander.java:jboss/MariaDBDS is
missing [jboss.jdbc-driver.mariadb-java-client-2_7_1_jar]
org.wildfly.data-source.MariaDBDS is missing
[jboss.jdbc-driver.mariadb-java-client-2_7_1_jar]
I have configured MariaDB Java connector in the jBPM standalone.xml
<subsystem xmlns="urn:jboss:domain:datasources:5.0">
<datasources>
<datasource jndi-name="java:jboss/datasources/ExampleDS" pool-name="ExampleDS" enabled="true" use-java-context="true">
<connection-url>jdbc:h2:mem:test;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE</connection-url>
<driver>h2</driver>
<security>
<user-name>sa</user-name>
<password>sa</password>
</security>
</datasource>
<datasource jta="true" jndi-name="java:jboss/MariaDBDS" pool-name="MariaDBDS" enabled="true" use-java-context="true" use-ccm="true">
<connection-url>jdbc:mariadb://localhost:3306/mysql</connection-url>
<driver-class>org.mariadb.jdbc.Driver</driver-class>
<driver>mariadb-java-client-2.7.1.jar</driver>
<security>
<user-name>root</user-name>
<password>admin</password>
</security>
<validation>
<valid-connection-checker class-name="org.jboss.jca.adapters.jdbc.extensions.mysql.MySQLValidConnectionChecker"/>
<validate-on-match>true</validate-on-match>
<background-validation>false</background-validation>
<exception-sorter class-name="org.jboss.jca.adapters.jdbc.extensions.mysql.MySQLExceptionSorter"/>
</validation>
</datasource>
<drivers>
<driver name="mariadb" module="org.mariadb">
<xa-datasource-class>org.mariadb.jdbc.MariaDbDataSource</xa-datasource-class>
</driver>
<driver name="h2" module="com.h2database.h2">
<xa-datasource-class>org.h2.jdbcx.JdbcDataSource</xa-datasource-class>
</driver>
</drivers>
</datasources>
</subsystem>
and I have copied the MariaDB Java connector to JBPM_HOME/modules/com/mariadb/main/mariadb-java-client-2.7.1.jar and configured the module.xml like this:
<module xmlns="urn:jboss:module:1.1" name="org.mariadb">
<resources>
<resource-root path="mariadb-java-client-2.7.1.jar"/>
</resources>
<dependencies>
<module name="javax.api"/>
<module name="javax.transaction.api"/>
</dependencies>
</module>
Also, in Business-Central to new process instance appeared this attention:
enter image description here
What I am missing or change in these steps? Any idea if jBPM works with the external DB or not?
#KrenarR have you set up these properties under system-properties as well?
<property name="org.kie.server.persistence.ds" value="java:jboss/MariaDBDS"/>
<property name="org.kie.server.persistence.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect"/>
You can also add the driver as a core module by means of jboss_cli:
module add --name=org.mariadb --resources=mariadb-java-client-2.7.1.jar --dependencies=javax.api,javax.transaction.api
Also check this line in the datasource:
<driver>mariadb-java-client-2.7.1.jar</driver>
I think it should be just the driver name you have defined:
<driver>mariadb</driver>
You can refer to the documentation Switch to another database
from jbpm.org for detailed steps.
I´ve succesfully set up a Postgres datasource on Wildfly 10.1 final. The application that uses the datasource is still under development and therefore not really in use yet.
Wildfly and postgres each are running in their own VM but on the same host machine.
About once a day, the connection apparently gets lost, and only a restart of wildfly will suffice to re-establish it.
In wildfly´s server.log I can´t find any message related to my datasource. Here is the datasource configuration from standalone.xml
<datasource jta="true" jndi-name="java:/JMPostgres" pool-name="PostgresDS" enabled="true" use-ccm="false">
<connection-url>jdbc:postgresql://10.66.1.102:5432/jm10</connection-url>
<driver-class>org.postgresql.Driver</driver-class>
<driver>postgresql-42.1.4.jar</driver>
<pool>
<min-pool-size>5</min-pool-size>
<initial-pool-size>5</initial-pool-size>
<max-pool-size>50</max-pool-size>
<prefill>true</prefill>
</pool>
<security>
<user-name>jm10</user-name>
<password>Ba4aeng$eeth0iog.ee2zohB</password>
</security>
<validation>
<valid-connection-checker class-name="org.jboss.jca.adapters.jdbc.extensions.postgres.PostgreSQLValidConnectionChecker"/>
<check-valid-connection-sql>SELECT 1 FROM DUAL;</check-valid-connection-sql>
<validate-on-match>true</validate-on-match>
<background-validation>true</background-validation>
<background-validation-millis>60000</background-validation-millis>
<stale-connection-checker class-name="org.jboss.jca.adapters.jdbc.extensions.postgres.StaleConnectionChecker"/>
<exception-sorter class-name="org.jboss.jca.adapters.jdbc.extensions.postgres.PostgreSQLExceptionSorter"/>
</validation>
<timeout>
<allocation-retry>5</allocation-retry>
<allocation-retry-wait-millis>10000</allocation-retry-wait-millis>
</timeout>
</datasource>
Previously I provided with user name and password and it was working fine. Now The Db side provided access with username only. I mean Username alone I can able to db server and not require password..
Fyr:
jboss path :
\jboss-eap-6.2\standalone\configuration\standalone.xml
<user-name>prabhu</user-name>
<password>x1234</password>
Now If try to provide only username, I am unable to connect Db. your help highly appreciated.
<datasource jta="true" jndi-name="java:/repdb" pool-name="db2_pool_repdb_amlinst" enabled="true" use-java-context="true" use-ccm="true">
<connection-url>jdbc:db2://01.83.42.122:50000/PRODDB:currentSchema=XYZ;</connection-url>
<driver-class>com.ibm.db2.jcc.DB2Driver</driver-class>
<driver>db2</driver>
<security>
<user-name>prabhu</user-name>
<password>x1234</password>
</security>
<validation>
<validate-on-match>false</validate-on-match>
<background-validation>false</background-validation>
</validation>
<statement>
<share-prepared-statements>false</share-prepared-statements>
</statement>
</datasource>
I want to implement Connection and Session pooling in jboss-eap-6.2 server to improve the transaction rate. As of now application has to open and close connection each time while sending the message to MQ. Please let me know what should be the configuration in jboss server.
When you set up your data sources there is a pool tag that you can use in the standalone config file
<datasources>
<datasource jta="true" jndi-name="java:/jndiname" pool-name="Datasourcepoolname" enabled="true" use-java-context="true" use-ccm="true">
<connection-url>//connection_string</connection-url>
<driver>MYSQL</driver>
<pool>
<min-pool-size>2</min-pool-size>
<max-pool-size>125</max-pool-size>
<prefill>false</prefill>
<use-strict-min>false</use-strict-min>
<flush-strategy>FailingConnectionOnly</flush-strategy>
</pool>
<timeout>
<blocking-timeout-millis>30000</blocking-timeout-millis>
<idle-timeout-minutes>5</idle-timeout-minutes>
</timeout>
</datasource>
<datasources>
Here is more on JBoss Datasource configuration:
https://docs.jboss.org/author/display/AS71/DataSource+configuration
I'm trying to add new datasource mysql jdbc driver to my wildfly server
I created folder wildfly.x.x.x/modules/system/layers/base/com/mysql/main
I've got here jdbc jar file and module.xml
<module xmlns="urn:jboss:module:1.3" name="com.mysql">
<resources>
<resource-root path="mysql-connector-java-5.1.34-bin.jar"/>
</resources>
<dependencies>
<module name="javax.api"/>
</dependencies>
</module>
then added dataresource code into standalone-full.xml (under datareources tag)
<datasource jndi-name="java:jboss/datasources/MySQLDS" pool-name="MySQLDS" enabled="true" use-java-context="true">
<connection-url>jdbc:mysql://localhost:3306/test</connection-url>
<driver>MySQLDriver</driver>
<security>
<user-name>root</user-name>
<password></password>
</security>
</datasource>
but when i go to wildfly control panel http://localhost:9990/console/
dataresource doesnt appear , what did i missed?
also i'm trying to add it manually from interface i'v got this error
Unexpected HTTP response: 500
Request
{
"address" => [
("subsystem" => "datasources"),
("data-source" => "mysql")
],
"operation" => "test-connection-in-pool"
}
Response
Internal Server Error
{
"outcome" => "failed",
"failure-description" => "JBAS010440: failed to invoke operation: JBAS010447: Connection is not valid",
"rolled-back" => true
}
Did you add a driver definition? Your datasources subsystem should look something like this:
<subsystem xmlns="urn:jboss:domain:datasources:2.0">
<datasources>
<datasource jndi-name="java:/jdbc/myds" pool-name="myds" enabled="true" use-java-context="true">
<connection-url>jdbc:mysql://localhost/mydb</connection-url>
<driver>mysql</driver>
<security>
<user-name>foo</user-name>
<password>bar</password>
</security>
</datasource>
<drivers>
<driver name="h2" module="com.h2database.h2">
<xa-datasource-class>org.h2.jdbcx.JdbcDataSource</xa-datasource-class>
</driver>
<driver name="mysql" module="com.mysql">
<xa-datasource-class>com.mysql.jdbc.jdbc2.optional.MysqlXADataSource</xa-datasource-class>
</driver>
</drivers>
</datasources>
</subsystem>
The driver element in the data source definition must reference a driver element by name. The module attribute must match the name of your MySQL driver module.
Actually I meet the same problem (I could add the datasources and test connection successfully before) So I'm just confused and I find a way works for me:)
See my services and I find it stopped,and I started it then tried again,It works well again! Even though your service does not stop, maybe just restart it.
I have to say it may not work for you if you never success to connect before,good luck~
There are three ways using which you can simply create datasource into wildfly
Using admin console
Manually adding into standalone.xml
Creating datasource file that is xml file.
Go to WildFly directory/standalone/deployments
Simplest way to create datasource xml with following content
<datasources xmlns="http://www.jboss.org/ironjacamar/schema">
<datasource jndi-name="APP_DS" pool-name="APP_DS" enabled="true" use-ccm="false">
<connection-url>jdbc:mysql://localhost:3306/DB_NAME</connection-url>
<driver-class>com.mysql.jdbc.Driver</driver-class>
<driver>mysql</driver>
<!-- sql to call when connection is created -->
<new-connection-sql>SELECT 1</new-connection-sql>
<pool>
<min-pool-size>5</min-pool-size>
<max-pool-size>50</max-pool-size>
</pool>
<security>
<user-name>username</user-name>
<password>password</password>
</security>
<!-- sql to call on an existing pooled connection when it is obtained from pool -->
<validation>
<check-valid-connection-sql>SELECT 1</check-valid-connection-sql>
</validation>
<timeout>
<blocking-timeout-millis>300000</blocking-timeout-millis>
<idle-timeout-minutes>5</idle-timeout-minutes>
</timeout>
<statement>
<track-statements>true</track-statements>
</statement>
</datasource>
</datasources>
Also create the database that you will use. Sometimes the reason for this error is that the database is missing.