小编Dal*_*Dal的帖子

我在我的项目中使用Apache Tomcat JDBC连接池.我很困惑因为在重载下我一直看到以下错误:

12:26:36,410 ERROR [] (http-/XX.XXX.XXX.X:XXXXX-X) org.apache.tomcat.jdbc.pool.PoolExhaustedException: [http-/XX.XXX.XXX.X:XXXXX-X] Timeout: Pool empty. Unable to fetch a connection in 10 seconds, none available[size:4; busy:4; idle:0; lastwait:10000].
12:26:36,411 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/APP].[AppConf]] (http-/XX.XXX.XXX.X:XXXXX-X) JBWEB000236: Servlet.service() for servlet AppConf threw exception: org.jboss.resteasy.spi.UnhandledException: java.lang.NullPointerException

我的期望是,对于池,对新连接的请求将保留在队列中,直到连接可用.相反,当池达到容量时,似乎拒绝了请求.这种行为可以改变吗？

谢谢,

达尔

这是我的池配置:

PoolProperties p = new PoolProperties();
p.setUrl("jdbc:oracle:thin:@" + server + ":" + port + ":" + SID_SVC);
p.setDriverClassName("oracle.jdbc.driver.OracleDriver");
p.setUsername(username);
p.setPassword(password);
p.setMaxActive(4);
p.setInitialSize(1);
p.setMaxWait(10000);
p.setRemoveAbandonedTimeout(300);
p.setMinEvictableIdleTimeMillis(150000);
p.setTestOnBorrow(true);
p.setValidationQuery("SELECT 1 from dual");
p.setMinIdle(1);
p.setMaxIdle(2);
p.setRemoveAbandoned(true);
p.setJdbcInterceptors(
    "org.apache.tomcat.jdbc.pool.interceptor.ConnectionState;"
    + "org.apache.tomcat.jdbc.pool.interceptor.StatementFinalizer;" 
    + "org.apache.tomcat.jdbc.pool.interceptor.ResetAbandonedTimer");