如何配置C3P0以使用数据源URL在jboss AS7中的oracle数据库进行连接

时间：2017-06-08 17:18:42

标签： oracle jboss datasource c3p0

我们在jboss中配置c3p0时遇到问题，有2个配置文件，我们不知道要改变它们：

Jboss datasource app-ds.xml：

<datasources>
    <datasource jta="false" jndi-name="java:/TestJNDI" pool-name="TestPool" use-ccm="false">
        <connection-url>jdbc:oracle:thin:@server_test:port:database</connection-url>
        <connection-property name="schema">schema</connection-property>
        <driver-class>oracle.jdbc.OracleDriver</driver-class>
        <driver>ojdbc6.jar</driver>
        <pool>
                <min-pool-size>20</min-pool-size>
                <max-pool-size>400</max-pool-size>
        </pool>
        <security>
            <user-name>user</user-name>
            <password>pass</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>   
</datasources>

的persistence.xml：

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd" version="2.0">
    <persistence-unit name="Oracle">
        <description>Oracle database connection</description>
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <class>entity1</class>
        <!-- entities -->
        <class>entityN</class>
        <properties>
            <property name="hibernate.show_sql" value="false"/>
            <property name="hibernate.format_sql" value="true"/>
            <property name="hibernate.connection.datasource" value="java:/TestJNDI"/>
            <property name="hibernate.connection.driver_class" value="oracle.jdbc.driver.OracleDriver" /> 
            <property name="hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect"/>
            <property name="hibernate.generate_statistics" value="true"/>  

            <!-- Important -->
            <property name="hibernate.connection.provider_class" value="org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider" /> 
            <property name="hibernate.c3p0.max_size" value="100" />
            <property name="hibernate.c3p0.min_size" value="0" />
            <property name="hibernate.c3p0.acquire_increment" value="1" />
            <property name="hibernate.c3p0.idle_test_period" value="300" />
            <property name="hibernate.c3p0.max_statements" value="0" />
            <property name="hibernate.c3p0.timeout" value="100" />
        </properties>
    </persistence-unit>
</persistence>

日志：

INFO  [org.jboss.as.jpa] (MSC service thread 1-4) JBAS011401: Read persistence.xml for Oracle
WARN  [org.jboss.jaxrs] (MSC service thread 1-15) JBAS011204: resteasy.scan found and ignored in web.xml. This is not necessary, as Resteasy will use the container integration in the JAX-RS 1.1 specification in section 2.3.2
INFO  [org.jboss.as.connector.deployers.jdbc] (MSC service thread 1-15) JBAS010403: Deploying JDBC-compliant driver class oracle.jdbc.OracleDriver (version 11.2)
INFO  [org.jboss.as.jpa] (MSC service thread 1-8) JBAS011402: Starting Persistence Unit Service 'AppTestEAR.ear/AppTest.war#Oracle'
INFO  [org.hibernate.ejb.Ejb3Configuration] (MSC service thread 1-8) HHH000204: Processing PersistenceUnitInfo [
    name: Oracle
    ...]
INFO  [org.hibernate.service.jdbc.connections.internal.ConnectionProviderInitiator] (MSC service thread 1-8) HHH000130: Instantiating explicit connection provider: org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider
INFO  [org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider] (MSC service thread 1-8) HHH010002: C3P0 using driver: oracle.jdbc.driver.OracleDriver at URL: null
INFO  [org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider] (MSC service thread 1-8) HHH000046: Connection properties: {autocommit=true, release_mode=auto}
INFO  [org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider] (MSC service thread 1-8) HHH000006: Autocommit mode: true
INFO  [com.mchange.v2.log.MLog] (MSC service thread 1-8) MLog clients using log4j logging.
INFO  [com.mchange.v2.c3p0.C3P0Registry] (MSC service thread 1-8) Initializing c3p0-0.9.1 [built 16-January-2007 14:46:42; debug? true; trace: 10]
INFO  [com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource] (MSC service thread 1-8) Initializing c3p0 pool... com.mchange.v2.c3p0.PoolBackedDataSource@20860e3b [ connectionPoolDataSource -> com.mchange.v2.c3p0.WrapperConnectionPoolDataSource@8b71134e [ acquireIncrement -> 1, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 0, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, debugUnreturnedConnectionStackTraces -> false, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, identityToken -> 2zkodt9o11wh4uo1mijhxn|327556d1, idleConnectionTestPeriod -> 300, initialPoolSize -> 3, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdleTime -> 180, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 200, maxStatements -> 0, maxStatementsPerConnection -> 0, minPoolSize -> 20, nestedDataSource -> com.mchange.v2.c3p0.DriverManagerDataSource@d6b12b99 [ description -> null, driverClass -> null, factoryClassLocation -> null, identityToken -> 2zkodt9o11wh4uo1mijhxn|2c53cfe3, jdbcUrl -> null, properties -> {autocommit=true, release_mode=auto} ], preferredTestQuery -> null, propertyCycle -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> false, unreturnedConnectionTimeout -> 0, usesTraditionalReflectiveProxies -> false; userOverrides: {} ], dataSourceName -> null, factoryClassLocation -> null, identityToken -> 2zkodt9o11wh4uo1mijhxn|4fcb6c, numHelperThreads -> 3 ]
WARN  [com.mchange.v2.async.ThreadPoolAsynchronousRunner] (Timer-3) com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@1b6cdb87 -- APPARENT DEADLOCK!!! Creating emergency threads for unassigned pending tasks!
WARN  [com.mchange.v2.async.ThreadPoolAsynchronousRunner] (Timer-3) com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@1b6cdb87 -- APPARENT DEADLOCK!!! Complete Status:

问题在于：

HHH010002: C3P0 using driver: oracle.jdbc.driver.OracleDriver at URL: null

我们想要使用jboss（商务要求）中数据源中提供的凭证（url），

所以问题是：如何配置c3p0以使用数据源url在jboss AS7中的oracle数据库进行连接？

3 个答案:

答案 0 :(得分：1)

看起来正在发生的是根据persistence.xml中的配置构建DataSource，并且正在使用一些JDBC标准属性（例如minPoolSize，maxPoolSize）被app-ds.xml中的设置覆盖。

我认为主要问题是您没有在persistence.xml中配置JDBC网址。 （c3p0的jdbcUrl不是JDBC标准属性，因此app-ds.xml未设置它。）您应该添加persistence.xml之类的内容：

<property name="hibernate.connection.url">jdbc:oracle:thin:@server_test:port:database</property>

user和password似乎也未设置。添加到persistence.xml之类的内容：

<property name="hibernate.connection.username">user</property>
<property name="hibernate.connection.password">pass</property>

（要查看已经采取和未采取的设置，请向右滚动以查看日志行开始Initializing c3p0 pool...上的配置信息）

我尝试尽可能多地从app-ds.xml删除，因此您不会在两个地方混淆配置。你或许可以逃脱...... 

<datasources>
    <datasource jta="false" jndi-name="java:/TestJNDI" pool-name="TestPool" use-ccm="false" />
</datasources>

......但也许不是。

答案 1 :(得分：0)

只需添加hibernate配置即可连接到数据源，如下所示

 <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
        "http://hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
        <property name="hibernate.connection.datasource">java:comp/env/jdbc/MySQLDS</property>
        <property name="hibernate.current_session_context_class">thread</property>
        <property name="javax.persistence.validation.mode">none</property>
        <!-- Mapping with model class containing annotations -->
    <mapping class="com.study.vo.User"/>
    </session-factory>
</hibernate-configuration>

答案 2 :(得分：0)

你能碰到hibernate.cfg.xml吗？您可以添加类似

的内容 
<hibernate-configuration>
<session-factory> name="hibernate.dialect">org.hibernate.dialect.Oracle9Dialect</property>
<property name="hibernate.connection.url">jdbc:oracle:thin:@xyz:1521:sid</property>
<property name="hibernate.connection.username">u</property>
<property name="hibernate.connection.password">p</property>
<property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
<property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
<property name="hibernate.c3p0.min_size">5</property>
<property name="hibernate.c3p0.max_size">30</property>
<property name="hibernate.c3p0.timeout">20</property>
<property name="hibernate.c3p0.max_statements">50</property>
<property name="hibernate.c3p0.idle_test_period">3000</property>      
</session-factory>
</hibernate-configuration>
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