【发布时间】：2015-08-07 20:31:32
【问题描述】：
我面临以下错误。, 我能够与 Db 连接并在日志中发现此错误，它将在 stacktrace 多个 no 之后打印。次。
Exception in thread "Task-Thread-for-com.mchange.v2.async.ThreadPerTaskAsynchronousRunner@421f054f" java.lang.NoClassDefFoundError: oracle/net/ns/RefusePacket
at oracle.net.ns.NSProtocol.connect(NSProtocol.java:347)
at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1054)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:308)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:536)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:228)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:521)
at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:135)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014)
at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
at com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810)
at com.mchange.v2.async.ThreadPerTaskAsynchronousRunner$TaskThread.run(ThreadPerTaskAsynchronousRunner.java:255)
以下是我正在使用的 jar 文件 ojdbc6.jar , c3p0-0.9.1.jar ,mchange-commons-java-0.2.9.jar ,hibernate-c3p0-4.1.9.final.jar
在 Java 1.7 中使用 hibernate4。
我们将非常感谢您的帮助
【问题讨论】：
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“使用”是什么意思？编译？或者它们在运行时可用？ RefusePackaget 应该在 ojdbc6.jar 中；我猜你的应用程序（web？cli？）找不到你的 ojdbc6.jar。
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是的，jar 存在并且我也能够执行所有操作... m 使用 linux 服务器我应该显式添加到类路径中吗？
标签： java oracle hibernate jar c3p0