C3P0 的 maxStatements 问题

今天搭建项目使用到了c3p0,但是遇到了如下错误

INFO AbstractPoolBackedDataSource:462 - Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 1, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 0, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, dataSourceName -> 1hge0ys9219g7a325q7570|19f9f8e, debugUnreturnedConnectionStackTraces -> false, description -> null, driverClass -> oracle.jdbc.OracleDriver, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, identityToken -> 1hge0ys9219g7a325q7570|19f9f8e, idleConnectionTestPeriod -> 0, initialPoolSize -> 10, jdbcUrl -> jdbc:oracle:thin:@localhost:1521:camds, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdleTime -> 5, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 15, maxStatements -> 0, maxStatementsPerConnection -> 0, minPoolSize -> 10, numHelperThreads -> 3, numThreadsAwaitingCheckoutDefaultUser -> 0, preferredTestQuery -> null, properties -> {user=******, password=******}, propertyCycle -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> false, unreturnedConnectionTimeout -> 0, usesTraditionalReflectiveProxies -> false ]

最后经过调试，几经测试

发现 在使用 com.mchange.v2.c3p0.ComboPooledDataSource 时

要配置如下

<property name="maxStatements" value="0" />

最后问题解决。