Tomcat配置多數據源出現Unable to create initial connections
阿新 • • 發佈：2018-06-20
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遷自惡心人的網易博客 2017-06-27
完整標題：Tomcat配置多個JNDI數據源（Postgresql）出現Unable to create initial connections of pool
版本說明
tomcat7
Postgresql9.1
問題描述
在conf/context.xml中配置了兩個數據源指向如下：
<Resource name="jdbc/web" auth="Container" type="javax.sql.DataSource" factory="org.apache.tomcat.jdbc.pool.DataSourceFactory" testWhileIdle="true" testOnBorrow="true" testOnReturn="false" validationQuery="SELECT 1" timeBetweenEvictionRunsMillis="30000" maxActive="10" maxIdle="5" minIdle="1" removeAbandonedTimeout="60" removeAbandoned="false" logAbandoned="true" minEvictableIdleTimeMillis="30000" jdbcInterceptors="org.apache.tomcat.jdbc.pool.interceptor.ConnectionState;org.apache.tomcat.jdbc.pool.interceptor.StatementFinalizer" username="postgres" password="" driverClassName="org.postgresql.Driver" url="jdbc:postgresql://localhost:5432/dbname?client_encoding=GBK"/> <Resource name="jdbc/storage" auth="Container" type="javax.sql.DataSource" factory="org.apache.tomcat.jdbc.pool.DataSourceFactory" testWhileIdle="true" testOnBorrow="true" testOnReturn="false" validationQuery="SELECT 1" timeBetweenEvictionRunsMillis="30000" maxActive="10" maxIdle="5" minIdle="1" removeAbandonedTimeout="60" removeAbandoned="false" logAbandoned="true" minEvictableIdleTimeMillis="30000" jdbcInterceptors="org.apache.tomcat.jdbc.pool.interceptor.ConnectionState;org.apache.tomcat.jdbc.pool.interceptor.StatementFinalizer" username="postgres" password="" driverClassName="org.postgresql.Driver" url="jdbc:postgresql://localhost:5432/dbname?client_encoding=GBK"/>
啟動tomcat出現如下異常：
嚴重: Unable to create initial connections of pool. org.postgresql.util.PSQLException: ????????: ??????, ???????????????? at org.postgresql.core.v3.ConnectionFactoryImpl.doAuthentication(ConnectionFactoryImpl.java:291) at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:106) at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:64) at org.postgresql.jdbc2.AbstractJdbc2Connection.<init>(AbstractJdbc2Connection.java:123) at org.postgresql.jdbc3.AbstractJdbc3Connection.<init>(AbstractJdbc3Connection.java:28) at org.postgresql.jdbc3g.AbstractJdbc3gConnection.<init>(AbstractJdbc3gConnection.java:20) at org.postgresql.jdbc4.AbstractJdbc4Connection.<init>(AbstractJdbc4Connection.java:30) at org.postgresql.jdbc4.Jdbc4Connection.<init>(Jdbc4Connection.java:22) at org.postgresql.Driver.makeConnection(Driver.java:391) at org.postgresql.Driver.connect(Driver.java:265) at org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDriver(PooledConnection.java:278) at org.apache.tomcat.jdbc.pool.PooledConnection.connect(PooledConnection.java:182) at org.apache.tomcat.jdbc.pool.ConnectionPool.createConnection(ConnectionPool.java:730) at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:664) at org.apache.tomcat.jdbc.pool.ConnectionPool.init(ConnectionPool.java:482) at org.apache.tomcat.jdbc.pool.ConnectionPool.<init>(ConnectionPool.java:156) at org.apache.tomcat.jdbc.pool.DataSourceProxy.pCreatePool(DataSourceProxy.java:116) at org.apache.tomcat.jdbc.pool.DataSourceProxy.createPool(DataSourceProxy.java:103) at org.apache.tomcat.jdbc.pool.DataSourceFactory.createDataSource(DataSourceFactory.java:560) at org.apache.tomcat.jdbc.pool.DataSourceFactory.getObjectInstance(DataSourceFactory.java:245) at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:141) at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:321) at org.apache.naming.NamingContext.lookup(NamingContext.java:848) at org.apache.naming.NamingContext.lookup(NamingContext.java:159) at org.apache.naming.NamingContext.lookup(NamingContext.java:836) at org.apache.naming.NamingContext.lookup(NamingContext.java:173) at org.apache.catalina.core.NamingContextListener.addResource(NamingContextListener.java:1110) at org.apache.catalina.core.NamingContextListener.createNamingContext(NamingContextListener.java:689) at org.apache.catalina.core.NamingContextListener.lifecycleEvent(NamingContextListener.java:273) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5522) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1260) at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:2002) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) 六月 27, 2017 9:43:35 下午 org.apache.tomcat.jdbc.pool.ConnectionPool abandon 警告: Connection has been abandoned PooledConnection[org.postgresql.jdbc4.Jdbc4Connection@5bc1a591]:java.lang.Exception at org.apache.tomcat.jdbc.pool.ConnectionPool.getThreadDump(ConnectionPool.java:1096) at org.apache.tomcat.jdbc.pool.ConnectionPool.createConnection(ConnectionPool.java:735) at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:664) at org.apache.tomcat.jdbc.pool.ConnectionPool.init(ConnectionPool.java:482) at org.apache.tomcat.jdbc.pool.ConnectionPool.<init>(ConnectionPool.java:156) at org.apache.tomcat.jdbc.pool.DataSourceProxy.pCreatePool(DataSourceProxy.java:116) at org.apache.tomcat.jdbc.pool.DataSourceProxy.createPool(DataSourceProxy.java:103) at org.apache.tomcat.jdbc.pool.DataSourceFactory.createDataSource(DataSourceFactory.java:560) at org.apache.tomcat.jdbc.pool.DataSourceFactory.getObjectInstance(DataSourceFactory.java:245) at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:141) at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:321) at org.apache.naming.NamingContext.lookup(NamingContext.java:848) at org.apache.naming.NamingContext.lookup(NamingContext.java:159) at org.apache.naming.NamingContext.lookup(NamingContext.java:836) at org.apache.naming.NamingContext.lookup(NamingContext.java:173) at org.apache.catalina.core.NamingContextListener.addResource(NamingContextListener.java:1110) at org.apache.catalina.core.NamingContextListener.createNamingContext(NamingContextListener.java:689) at org.apache.catalina.core.NamingContextListener.lifecycleEvent(NamingContextListener.java:273) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5522) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1260) at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:2002) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745)
Google了半天也沒找到啥原因，只能一點點嘗試排除，簡化配置，發現保留一個Resource節點時Tomcat可以正常啟動，一旦大於一個就出異常，然後查了Tomcat官方文檔明確寫到Context節點下可以嵌套多個Resource節點，那難道是Postgresql的問題？嘗試換了一個數據庫驅動jar包也沒啥用。還是把問題定位在Tomcat多JNDI數據源配置上，折騰了半天，最後換了一種數據源的配置方式，問題竟然解決了。
解決辦法
換另一種配置方式：把Resource節點放到server.xml的GlobalNamingResources節點下，然後在context.xml中添加如下配置：
<ResourceLink global="jdbc/web" name="jdbc/web" type="javax.sql.DataSource" /> <ResourceLink global="jdbc/storage" name="jdbc/storage" type="javax.sql.DataSource" />
采用這種方式配置Tomcat可正常啟動，數據源也可用，但是出現這個bug的原因還是沒搞清楚。。。
Tomcat配置多數據源出現Unable to create initial connections