Horrible Exception: org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Listener refused the connection with the following error:
ORA-12519, TNS:no appropriate service handler found
The Connection descriptor used by the client was:
148.251.232.3:1521:MCDB2

	at org.springframework.jdbc.datasource.DataSourceTransactionManager.doBegin(DataSourceTransactionManager.java:238)
	at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:374)
	at org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:263)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:101)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
	at com.sun.proxy.$Proxy35.getUnits(Unknown Source)
	at com.mic.escrow.buyer.modules.screens.search.NewProducts_list.calculateCommission(NewProducts_list.java:1112)
	at com.mic.escrow.buyer.modules.screens.search.NewProducts_list.doBuildTemplate(NewProducts_list.java:611)
	at org.apache.turbine.modules.screens.VelocityScreen.doBuildTemplate(VelocityScreen.java:79)
	at org.apache.turbine.modules.screens.TemplateScreen.doBuild(TemplateScreen.java:100)
	at org.apache.turbine.modules.Screen.build(Screen.java:57)
	at org.apache.turbine.modules.ScreenLoader.eval(ScreenLoader.java:107)
	at org.apache.turbine.modules.layouts.VelocityOnlyLayout.doBuild(VelocityOnlyLayout.java:93)
	at org.apache.turbine.modules.Layout.build(Layout.java:53)
	at org.apache.turbine.modules.LayoutLoader.exec(LayoutLoader.java:101)
	at org.apache.turbine.modules.pages.DefaultPage.doBuild(DefaultPage.java:146)
	at org.apache.turbine.modules.Page.build(Page.java:53)
	at org.apache.turbine.modules.PageLoader.exec(PageLoader.java:101)
	at org.apache.turbine.Turbine.doGet(Turbine.java:799)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:470)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Thread.java:662)
Caused by: java.sql.SQLException: Listener refused the connection with the following error:
ORA-12519, TNS:no appropriate service handler found
The Connection descriptor used by the client was:
148.251.232.3:1521:MCDB2

	at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:111)
	at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:260)
	at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:386)
	at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:413)
	at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:164)
	at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:34)
	at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:752)
	at org.apache.commons.dbcp.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:38)
	at org.apache.commons.dbcp.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:294)
	at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:840)
	at org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:96)
	at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:880)
	at org.springframework.jdbc.datasource.DataSourceTransactionManager.doBegin(DataSourceTransactionManager.java:200)
	... 34 more