java.sql.SQLRecoverableException :Closed Connection 错误

Question

我在 Oracle 11 上使用 jboss7.0.2 final。目前我面临一个随机发生的问题。但是在重负载期间，此错误跟踪不断增长。尝试了很多方法都没有成功。

我的数据源配置:

<?xml version="1.0" encoding="UTF-8"?>
<datasource jndi-name="sportPool" pool-name="sportPool" enabled="true" jta="true" use-java-context="true" use-ccm="true">
    <connection-url>jdbc:oracle:thin:@10.11.252.200:1521:sportsdb</connection-url>
    <driver>oracleDriver</driver>
    <pool>
        <min-pool-size>1</min-pool-size>
        <max-pool-size>75</max-pool-size>
        <prefill>false</prefill>
        <use-strict-min>false</use-strict-min>
        <flush-strategy>FailingConnectionOnly</flush-strategy>
    </pool>
    <security>
        <user-name>mportal</user-name>
        <password>mobile</password>
    </security>
    <timeout>
        <idle-timeout-minutes>60000</idle-timeout-minutes>
    </timeout>
</datasource>

堆栈跟踪:

nested exception is java.sql.SQLRecoverableException: Closed Connection
        at org.springframework.jdbc.support.SQLExceptionSubclassTranslator.translate(SQLExceptionSubclassTranslator.java:82)
        at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.translate(SQLErrorCodeSQLExceptionTranslator.java:237)
        at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:604)
        at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:638)
        at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:667)
        at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:683)

        ... 50 more
Caused by: java.sql.SQLRecoverableException: Closed Connection
        at oracle.jdbc.driver.OracleStatement.ensureOpen(OracleStatement.java:4051)
        at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3563)
        at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3628)
        at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeQuery(OraclePreparedStatementWrapper.java:1493)
        at org.jboss.jca.adapters.jdbc.CachedPreparedStatement.executeQuery(CachedPreparedStatement.java:111)
        at org.jboss.jca.adapters.jdbc.WrappedPreparedStatement.executeQuery(WrappedPreparedStatement.java:462)
        at org.springframework.jdbc.core.JdbcTemplate$1.doInPreparedStatement(JdbcTemplate.java:645)
        at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:588)
        ... 56 more

Answer 1

1. 查看您的数据库设置 - 数据库中设置的超时时间可能比数据源部署描述符中设置的超时时间短，并且数据库关闭了连接。

2. 检查您的网络 - 可能是您的防火墙/路由设置有问题，并且连接在路由中间某处关闭/断开。

3. 看看这个链接JBoss 7 Datasource Configuration .有一种配置数据源描述符的方法，强制 JBoss 在从池中 check out 连接时检查连接。使用 valid-connection-checker(更快)或 check-valid-connection-sql(更慢)设置并设置

   <valid-connection-checker>
       org.jboss.resource.adapter.jdbc.vendor.OracleValidConnectionChecker
   </valid-connection-checker>
   

   或

   <check-valid-connection-sql>
       SELECT 1 FROM DUAL
   </check-valid-connection-sql>