在JBoss 7.1.1中为MySQL集群创建XA数据源：连接只读错误

我们正在JBoss 7.1.1应用程序服务器中为后端集群MySQL服务器（主 - 主配置）配置XA数据源。下面是数据源配置：在JBoss 7.1.1中为MySQL集群创建XA数据源：连接只读错误

<xa-datasource jndi-name="java:/datasoucrenew" pool-name="datasoucrenew" enabled="true" use-ccm="false"> 
        <xa-datasource-property name="URL"> 
         jdbc:mysql://10.2.0.35:3306,10.2.0.36:3306/test_prod?autoReconnect=true 
        </xa-datasource-property> 
        <xa-datasource-property name="password"> 
         password 
        </xa-datasource-property> 
        <xa-datasource-property name="user"> 
         user 
        </xa-datasource-property> 
        <xa-datasource-class>com.mysql.jdbc.jdbc2.optional.MysqlXADataSource</xa-datasource-class> 
        <driver>mysql-connector-java-5.1.12-bin.jar</driver> 
        <xa-pool> 
         <min-pool-size>0</min-pool-size> 
         <max-pool-size>100</max-pool-size> 
         <use-strict-min>true</use-strict-min> 
         <is-same-rm-override>false</is-same-rm-override> 
         <interleaving>false</interleaving> 
         <pad-xid>false</pad-xid> 
         <wrap-xa-resource>false</wrap-xa-resource> 
        </xa-pool> 
        <security> 
         <user-name>user</user-name> 
         <password>password</password> 
        </security> 
        <validation> 
         <validate-on-match>false</validate-on-match> 
         <background-validation>false</background-validation> 
         <exception-sorter class-name="org.jboss.resource.adapter.jdbc.vendor.MySQLExceptionSorter"/> 
        </validation> 
        <statement> 
         <share-prepared-statements>false</share-prepared-statements> 
        </statement> 
       </xa-datasource>

我们面临着如下问题：

在DB URL为jdbc：mysql的：//10.2.0.35：3306,10.2.0.36：3306/test_prod autoReconnect的=如果10.27.40.35服务器关闭，那么它会给出以下例外。但是，如果我将URL配置反转为jdbc：mysql：//10.2.0.36：3306,10.2.0.35：3306/test_prod？autoReconnect = true，它可以正常工作。你能帮我找出造成这个问题的原因吗？

在开始我想这是一个驱动程序问题。但是使用相同的驱动程序，当我运行独立应用程序时，它没有任何问题。

12:06:08,782 ERROR [stderr] (MSC service thread 1-1) com.mysql.jdbc.jdbc2.optional.MysqlXAException: **Connection is read-only. Queries leading to data modificati 
on are not allowed.** 
12:06:08,784 ERROR [stderr] (MSC service thread 1-1) at com.mysql.jdbc.jdbc2.optional.MysqlXAConnection.mapXAExceptionFromSQLException(MysqlXAConnection.java 
:607) 
12:06:08,788 ERROR [stderr] (MSC service thread 1-1) at com.mysql.jdbc.jdbc2.optional.MysqlXAConnection.dispatchCommand(MysqlXAConnection.java:586) 
12:06:08,790 ERROR [stderr] (MSC service thread 1-1) at com.mysql.jdbc.jdbc2.optional.MysqlXAConnection.start(MysqlXAConnection.java:526) 
12:06:08,793 ERROR [stderr] (MSC service thread 1-1) at org.jboss.jca.adapters.jdbc.xa.XAManagedConnection.start(XAManagedConnection.java:259) 
12:06:08,796 ERROR [stderr] (MSC service thread 1-1) at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.enlistResource(TransactionImple.j 
ava:636) 
12:06:08,799 ERROR [stderr] (MSC service thread 1-1) at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.enlistResource(TransactionImple.j 
ava:397) 
12:06:08,802 ERROR [stderr] (MSC service thread 1-1) at org.jboss.jca.core.connectionmanager.listener.TxConnectionListener$TransactionSynchronization.enlist(
TxConnectionListener.java:587) 
12:06:08,806 ERROR [stderr] (MSC service thread 1-1) at org.jboss.jca.core.connectionmanager.listener.TxConnectionListener.enlist(TxConnectionListener.java:2 
64) 
12:06:08,809 ERROR [stderr] (MSC service thread 1-1) at org.jboss.jca.core.connectionmanager.tx.TxConnectionManagerImpl.managedConnectionReconnected(TxConnec 
tionManagerImpl.java:467) 
12:06:08,813 ERROR [stderr] (MSC service thread 1-1) at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.reconnectManagedConnection(AbstractCon 
nectionManager.java:599) 
12:06:08,817 ERROR [stderr] (MSC service thread 1-1) at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.allocateConnection(AbstractConnectionM 
anager.java:467) 
12:06:08,819 ERROR [stderr] (MSC service thread 1-1) at org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:129) 
12:06:08,821 ERROR [stderr] (MSC service thread 1-1) at org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider.getConnection(LocalDataSourceCon

注：我们使用使用mysql-connector-java的5.1.12-bin.jar MySQL驱动为最新版本的21或24或27得到下述错误：

java.lang.ClassCastException: $Proxy0 cannot be cast to com.mysql.jdbc.ConnectionImpl 
Completed 
    at com.mysql.jdbc.jdbc2.optional.MysqlXADataSource.wrapConnection(MysqlXADataSource.java:76) 
    at com.mysql.jdbc.jdbc2.optional.MysqlXADataSource.getXAConnection(MysqlXADataSource.java:52)

真的很感谢您解决此问题的答案。

问候，

Manjunath

来源

2013-12-17 Manjunath

我强烈建议使用wireshark或类似工具获取网络跟踪，并比较成功和失败的情况。这两个服务器配置的可能性很小。 – steve

能不能请你看哪有jdbc:mysql:loadbalance:取代jdbc:mysql:。它应该使第二台服务器能够以读取/写入而不是只读的方式进行访问。

BR，Ilya

来源

2014-03-03 11:49:02 Busotir

在JBoss 7.1.1中为MySQL集群创建XA数据源：连接只读错误

回答

相关问题