Cannot create PoolableConnectionFactory Io exception The Network Adapter could not establish the connection

Question

Hi I have having the exception above from a spring application  I am trying to connect to a clustered Oracle DB  but even if I try to connect to a single instance still have the same exception   The bean definition is as thus        lt bean id  dataSource  class  org apache commons dbcp BasicDataSource  destroy-method  close  gt               lt property name  driverClassName  value  oracle jdbc driver OracleDriver    gt               lt property name  url  value  jdbc oracle thin   DESCRIPTION  ADDRESS LIST  ADDRESS  PROTOCOL TCP  HOST host ip1  PORT 1521   ADDRESS  PROTOCOL TCP  HOST host ip2  PORT 1521    LOAD BALANCE ON  FAILOVER ON  CONNECT DATA  SERVER DEDICATED  SERVICE NAME db       gt               lt property name  username  value  username    gt               lt property name  password  value  password    gt               lt property name  initialSize  value  10    gt        lt  bean gt    The full stack trace is   2012-02-13 13 18 45 084 1375  main  INFO  org hibernate connection ConnectionProviderFactory  - Initializing connection provider  org springframework orm hibernate3 LocalDataSourceConnectionProvider 2012-02-13 13 18 45 207 1498  main  WARN  org hibernate util JDBCExceptionReporter  - SQL Error  0  SQLState  null 2012-02-13 13 18 45 207 1498  main  ERROR org hibernate util JDBCExceptionReporter  - Cannot create PoolableConnectionFactory  Io exception  The Network Adapter could not establish the connection  2012-02-13 13 18 45 209 1500  main  WARN  org hibernate cfg SettingsFactory  - Could not obtain connection metadata org apache commons dbcp SQLNestedException  Cannot create PoolableConnectionFactory  Io exception  The Network Adapter could not establish the connection      at org apache commons dbcp BasicDataSource createPoolableConnectionFactory BasicDataSource java 1549      at org apache commons dbcp BasicDataSource createDataSource BasicDataSource java 1388      at org apache commons dbcp BasicDataSource getConnection BasicDataSource java 1044      at org springframework orm hibernate3 LocalDataSourceConnectionProvider getConnection LocalDataSourceConnectionProvider java 81      at org hibernate cfg SettingsFactory buildSettings SettingsFactory java 76      at org hibernate cfg Configuration buildSettings Configuration java 1933      at org hibernate cfg Configuration buildSessionFactory Configuration java 1216      at org springframework orm hibernate3 LocalSessionFactoryBean newSessionFactory LocalSessionFactoryBean java 860      at org springframework orm hibernate3 LocalSessionFactoryBean buildSessionFactory LocalSessionFactoryBean java 779      at org springframework orm hibernate3 AbstractSessionFactoryBean afterPropertiesSet AbstractSessionFactoryBean java 211      at org springframework beans factory support AbstractAutowireCapableBeanFactory invokeInitMethods AbstractAutowireCapableBeanFactory java 1479      at org springframework beans factory support AbstractAutowireCapableBeanFactory initializeBean AbstractAutowireCapableBeanFactory java 1417      at org springframework beans factory support AbstractAutowireCapableBeanFactory doCreateBean AbstractAutowireCapableBeanFactory java 519      at org springframework beans factory support AbstractAutowireCapableBeanFactory createBean AbstractAutowireCapableBeanFactory java 456      at org springframework beans factory support AbstractBeanFactory 1 getObject AbstractBeanFactory java 295      at org springframework beans factory support DefaultSingletonBeanRegistry getSingleton DefaultSingletonBeanRegistry java 222      at org springframework beans factory support AbstractBeanFactory doGetBean AbstractBeanFactory java 292      at org springframework beans factory support AbstractBeanFactory getBean AbstractBeanFactory java 194      at org springframework beans factory support BeanDefinitionValueResolver resolveReference BeanDefinitionValueResolver java 322      at org springframework beans factory support BeanDefinitionValueResolver resolveValueIfNecessary BeanDefinitionValueResolver java 106      at org springframework beans factory support AbstractAutowireCapableBeanFactory applyPropertyValues AbstractAutowireCapableBeanFactory java 1325      at org springframework beans factory support AbstractAutowireCapableBeanFactory populateBean AbstractAutowireCapableBeanFactory java 1086      at org springframework beans factory support AbstractAutowireCapableBeanFactory doCreateBean AbstractAutowireCapableBeanFactory java 517      at org springframework beans factory support AbstractAutowireCapableBeanFactory createBean AbstractAutowireCapableBeanFactory java 456      at org springframework beans factory support AbstractBeanFactory 1 getObject AbstractBeanFactory java 295      at org springframework beans factory support DefaultSingletonBeanRegistry getSingleton DefaultSingletonBeanRegistry java 222      at org springframework beans factory support AbstractBeanFactory doGetBean AbstractBeanFactory java 292      at org springframework beans factory support AbstractBeanFactory getBean AbstractBeanFactory java 194      at org springframework beans factory support DefaultListableBeanFactory findAutowireCandidates DefaultListableBeanFactory java 844      at org springframework beans factory support DefaultListableBeanFactory doResolveDependency DefaultListableBeanFactory java 786      at org springframework beans factory support DefaultListableBeanFactory resolveDependency DefaultListableBeanFactory java 703      at org springframework beans factory annotation AutowiredAnnotationBeanPostProcessor AutowiredMethodElement inject AutowiredAnnotationBeanPostProcessor java 547      at org springframework beans factory annotation InjectionMetadata inject InjectionMetadata java 84      at org springframework beans factory annotation AutowiredAnnotationBeanPostProcessor postProcessPropertyValues AutowiredAnnotationBeanPostProcessor java 282      at org springframework beans factory support AbstractAutowireCapableBeanFactory populateBean AbstractAutowireCapableBeanFactory java 1074      at org springframework beans factory support AbstractAutowireCapableBeanFactory doCreateBean AbstractAutowireCapableBeanFactory java 517      at org springframework beans factory support AbstractAutowireCapableBeanFactory createBean AbstractAutowireCapableBeanFactory java 456      at org springframework beans factory support AbstractBeanFactory 1 getObject AbstractBeanFactory java 295      at org springframework beans factory support DefaultSingletonBeanRegistry getSingleton DefaultSingletonBeanRegistry java 222      at org springframework beans factory support AbstractBeanFactory doGetBean AbstractBeanFactory java 292      at org springframework beans factory support AbstractBeanFactory getBean AbstractBeanFactory java 194      at org springframework beans factory support DefaultListableBeanFactory preInstantiateSingletons DefaultListableBeanFactory java 580      at org springframework context support AbstractApplicationContext finishBeanFactoryInitialization AbstractApplicationContext java 900      at org springframework context support AbstractApplicationContext refresh AbstractApplicationContext java 455      at org springframework web servlet FrameworkServlet createWebApplicationContext FrameworkServlet java 442      at org springframework web servlet FrameworkServlet createWebApplicationContext FrameworkServlet java 458      at org springframework web servlet FrameworkServlet initWebApplicationContext FrameworkServlet java 339      at org springframework web servlet FrameworkServlet initServletBean FrameworkServlet java 306      at org springframework web servlet HttpServletBean init HttpServletBean java 133      at javax servlet GenericServlet init GenericServlet java 212      at org apache catalina core StandardWrapper loadServlet StandardWrapper java 1173      at org apache catalina core StandardWrapper load StandardWrapper java 993      at org apache catalina core StandardContext loadOnStartup StandardContext java 4350      at org apache catalina core StandardContext start StandardContext java 4659      at org apache catalina core ContainerBase addChildInternal ContainerBase java 791      at org apache catalina core ContainerBase addChild ContainerBase java 771      at org apache catalina core StandardHost addChild StandardHost java 546      at org apache catalina startup HostConfig deployDirectory HostConfig java 1041      at org apache catalina startup HostConfig deployDirectories HostConfig java 964      at org apache catalina startup HostConfig deployApps HostConfig java 502      at org apache catalina startup HostConfig start HostConfig java 1277      at org apache catalina startup HostConfig lifecycleEvent HostConfig java 321      at org apache catalina util LifecycleSupport fireLifecycleEvent LifecycleSupport java 119      at org apache catalina core ContainerBase start ContainerBase java 1053      at org apache catalina core StandardHost start StandardHost java 785      at org apache catalina core ContainerBase start ContainerBase java 1045      at org apache catalina core StandardEngine start StandardEngine java 445      at org apache catalina core StandardService start StandardService java 519      at org apache catalina core StandardServer start StandardServer java 710      at org apache catalina startup Catalina start Catalina java 581      at sun reflect NativeMethodAccessorImpl invoke0 Native Method      at sun reflect NativeMethodAccessorImpl invoke NativeMethodAccessorImpl java 39      at sun reflect DelegatingMethodAccessorImpl invoke DelegatingMethodAccessorImpl java 25      at java lang reflect Method invoke Method java 597      at org apache catalina startup Bootstrap start Bootstrap java 289      at org apache catalina startup Bootstrap main Bootstrap java 414  Caused by  java sql SQLException  Io exception  The Network Adapter could not establish the connection     at oracle jdbc driver DatabaseError throwSqlException DatabaseError java 112      at oracle jdbc driver DatabaseError throwSqlException DatabaseError java 146      at oracle jdbc driver DatabaseError throwSqlException DatabaseError java 255      at oracle jdbc driver T4CConnection logon T4CConnection java 387      at oracle jdbc driver PhysicalConnection  lt init gt  PhysicalConnection java 441      at oracle jdbc driver T4CConnection  lt init gt  T4CConnection java 165      at oracle jdbc driver T4CDriverExtension getConnection T4CDriverExtension java 35      at oracle jdbc driver OracleDriver connect OracleDriver java 801      at org apache commons dbcp DriverConnectionFactory createConnection DriverConnectionFactory java 38      at org apache commons dbcp PoolableConnectionFactory makeObject PoolableConnectionFactory java 582      at org apache commons dbcp BasicDataSource validateConnectionFactory BasicDataSource java 1556      at org apache commons dbcp BasicDataSource createPoolableConnectionFactory BasicDataSource java 1545          75 more   Changing the ip addresses to their DNS names  I have a different exception  the stack trace is below   2012-02-13 13 46 36 709 1685  main  WARN  org hibernate util JDBCExceptionReporter  - SQL Error  0  SQLState  null 2012-02-13 13 46 36 709 1685  main  ERROR org hibernate util JDBCExceptionReporter  - Error preloading the connection pool 2012-02-13 13 46 36 710 1686  main  WARN  org hibernate cfg SettingsFactory  - Could not obtain connection metadata org apache commons dbcp SQLNestedException  Error preloading the connection pool     at org apache commons dbcp BasicDataSource createDataSource BasicDataSource java 1398      at org apache commons dbcp BasicDataSource getConnection BasicDataSource java 1044      at org springframework orm hibernate3 LocalDataSourceConnectionProvider getConnection LocalDataSourceConnectionProvider java 81      at org hibernate cfg SettingsFactory buildSettings SettingsFactory java 76      at org hibernate cfg Configuration buildSettings Configuration java 1933      at org hibernate cfg Configuration buildSessionFactory Configuration java 1216      at org springframework orm hibernate3 LocalSessionFactoryBean newSessionFactory LocalSessionFactoryBean java 860      at org springframework orm hibernate3 LocalSessionFactoryBean buildSessionFactory LocalSessionFactoryBean java 779      at org springframework orm hibernate3 AbstractSessionFactoryBean afterPropertiesSet AbstractSessionFactoryBean java 211      at org springframework beans factory support AbstractAutowireCapableBeanFactory invokeInitMethods AbstractAutowireCapableBeanFactory java 1479      at org springframework beans factory support AbstractAutowireCapableBeanFactory initializeBean AbstractAutowireCapableBeanFactory java 1417      at org springframework beans factory support AbstractAutowireCapableBeanFactory doCreateBean AbstractAutowireCapableBeanFactory java 519      at org springframework beans factory support AbstractAutowireCapableBeanFactory createBean AbstractAutowireCapableBeanFactory java 456      at org springframework beans factory support AbstractBeanFactory 1 getObject AbstractBeanFactory java 295      at org springframework beans factory support DefaultSingletonBeanRegistry getSingleton DefaultSingletonBeanRegistry java 222      at org springframework beans factory support AbstractBeanFactory doGetBean AbstractBeanFactory java 292      at org springframework beans factory support AbstractBeanFactory getBean AbstractBeanFactory java 194      at org springframework beans factory support BeanDefinitionValueResolver resolveReference BeanDefinitionValueResolver java 322      at org springframework beans factory support BeanDefinitionValueResolver resolveValueIfNecessary BeanDefinitionValueResolver java 106      at org springframework beans factory support AbstractAutowireCapableBeanFactory applyPropertyValues AbstractAutowireCapableBeanFactory java 1325      at org springframework beans factory support AbstractAutowireCapableBeanFactory populateBean AbstractAutowireCapableBeanFactory java 1086      at org springframework beans factory support AbstractAutowireCapableBeanFactory doCreateBean AbstractAutowireCapableBeanFactory java 517      at org springframework beans factory support AbstractAutowireCapableBeanFactory createBean AbstractAutowireCapableBeanFactory java 456      at org springframework beans factory support AbstractBeanFactory 1 getObject AbstractBeanFactory java 295      at org springframework beans factory support DefaultSingletonBeanRegistry getSingleton DefaultSingletonBeanRegistry java 222      at org springframework beans factory support AbstractBeanFactory doGetBean AbstractBeanFactory java 292      at org springframework beans factory support AbstractBeanFactory getBean AbstractBeanFactory java 194      at org springframework beans factory support DefaultListableBeanFactory findAutowireCandidates DefaultListableBeanFactory java 844      at org springframework beans factory support DefaultListableBeanFactory doResolveDependency DefaultListableBeanFactory java 786      at org springframework beans factory support DefaultListableBeanFactory resolveDependency DefaultListableBeanFactory java 703      at org springframework beans factory annotation AutowiredAnnotationBeanPostProcessor AutowiredMethodElement inject AutowiredAnnotationBeanPostProcessor java 547      at org springframework beans factory annotation InjectionMetadata inject InjectionMetadata java 84      at org springframework beans factory annotation AutowiredAnnotationBeanPostProcessor postProcessPropertyValues AutowiredAnnotationBeanPostProcessor java 282      at org springframework beans factory support AbstractAutowireCapableBeanFactory populateBean AbstractAutowireCapableBeanFactory java 1074      at org springframework beans factory support AbstractAutowireCapableBeanFactory doCreateBean AbstractAutowireCapableBeanFactory java 517      at org springframework beans factory support AbstractAutowireCapableBeanFactory createBean AbstractAutowireCapableBeanFactory java 456      at org springframework beans factory support AbstractBeanFactory 1 getObject AbstractBeanFactory java 295      at org springframework beans factory support DefaultSingletonBeanRegistry getSingleton DefaultSingletonBeanRegistry java 222      at org springframework beans factory support AbstractBeanFactory doGetBean AbstractBeanFactory java 292      at org springframework beans factory support AbstractBeanFactory getBean AbstractBeanFactory java 194      at org springframework beans factory support DefaultListableBeanFactory preInstantiateSingletons DefaultListableBeanFactory java 580      at org springframework context support AbstractApplicationContext finishBeanFactoryInitialization AbstractApplicationContext java 900      at org springframework context support AbstractApplicationContext refresh AbstractApplicationContext java 455      at org springframework web servlet FrameworkServlet createWebApplicationContext FrameworkServlet java 442      at org springframework web servlet FrameworkServlet createWebApplicationContext FrameworkServlet java 458      at org springframework web servlet FrameworkServlet initWebApplicationContext FrameworkServlet java 339      at org springframework web servlet FrameworkServlet initServletBean FrameworkServlet java 306      at org springframework web servlet HttpServletBean init HttpServletBean java 133      at javax servlet GenericServlet init GenericServlet java 212      at org apache catalina core StandardWrapper loadServlet StandardWrapper java 1173      at org apache catalina core StandardWrapper load StandardWrapper java 993      at org apache catalina core StandardContext loadOnStartup StandardContext java 4350      at org apache catalina core StandardContext start StandardContext java 4659      at org apache catalina core ContainerBase addChildInternal ContainerBase java 791      at org apache catalina core ContainerBase addChild ContainerBase java 771      at org apache catalina core StandardHost addChild StandardHost java 546      at org apache catalina startup HostConfig deployDirectory HostConfig java 1041      at org apache catalina startup HostConfig deployDirectories HostConfig java 964      at org apache catalina startup HostConfig deployApps HostConfig java 502      at org apache catalina startup HostConfig start HostConfig java 1277      at org apache catalina startup HostConfig lifecycleEvent HostConfig java 321      at org apache catalina util LifecycleSupport fireLifecycleEvent LifecycleSupport java 119      at org apache catalina core ContainerBase start ContainerBase java 1053      at org apache catalina core StandardHost start StandardHost java 785      at org apache catalina core ContainerBase start ContainerBase java 1045      at org apache catalina core StandardEngine start StandardEngine java 445      at org apache catalina core StandardService start StandardService java 519      at org apache catalina core StandardServer start StandardServer java 710      at org apache catalina startup Catalina start Catalina java 581      at sun reflect NativeMethodAccessorImpl invoke0 Native Method      at sun reflect NativeMethodAccessorImpl invoke NativeMethodAccessorImpl java 39      at sun reflect DelegatingMethodAccessorImpl invoke DelegatingMethodAccessorImpl java 25      at java lang reflect Method invoke Method java 597      at org apache catalina startup Bootstrap start Bootstrap java 289      at org apache catalina startup Bootstrap main Bootstrap java 414  Caused by  java sql SQLException  Io exception  The Network Adapter could not establish the connection     at oracle jdbc driver DatabaseError throwSqlException DatabaseError java 112      at oracle jdbc driver DatabaseError throwSqlException DatabaseError java 146      at oracle jdbc driver DatabaseError throwSqlException DatabaseError java 255      at oracle jdbc driver T4CConnection logon T4CConnection java 387      at oracle jdbc driver PhysicalConnection  lt init gt  PhysicalConnection java 441      at oracle jdbc driver T4CConnection  lt init gt  T4CConnection java 165      at oracle jdbc driver T4CDriverExtension getConnection T4CDriverExtension java 35      at oracle jdbc driver OracleDriver connect OracleDriver java 801      at org apache commons dbcp DriverConnectionFactory createConnection DriverConnectionFactory java 38      at org apache commons dbcp PoolableConnectionFactory makeObject PoolableConnectionFactory java 582      at org apache commons pool impl GenericObjectPool addObject GenericObjectPool java 1059      at org apache commons dbcp BasicDataSource createDataSource BasicDataSource java 1395          74 more

User · Answer

I was also facing the error  Error preloading the connection pool  while using Oracle 10g Express Edition with my Spring and CAS based application during login   My CAS based application only has classes12 jar in its classpath  Placing ojdbc14 jar in  the classpath has resolved my problem

User · Answer

I had a similar error with Tomcat 8 0   MySQL   Changing the jdbc url value from localhost to 127 0 0 1 resolved the issue

User · Answer

I replaced the  quot localhost quot  with IP Address  Database server s public IP Address  in the jdbc Url then it worked  jdbcUrl    quot jdbc oracle thin  lt user gt    localhost 1521  lt Service Name gt  quot        jdbcUrl    quot jdbc oracle thin  lt user gt     lt Public IP Address gt  1521  lt Service Name gt  quot

User · Answer

Most of the cases issue  is due to problem with hostname   Please check the hostname  some times database team will maintain many hostname for connecting same database   Please check with database team regarding this connection issue

User · Answer

I had the same error and ended up solving it by upgrading my Oracle ojdbc driver to a version compatible with the Oracle database version

User · Answer

Just check tsnnames ora and listener ora files  It should not have localhost as a server  change it to hostname   Like in tnsnames ora  LISTENER ORCL    ADDRESS    PROTOCOL   TCP  HOST   localhost  PORT   1521     Replace localhost by hostname

User · Answer

I had to go look for ojdbc compatible with version on oracle that was installed this fixed my problem  my bad was thinking one ojdbc would work for all

[java] Cannot create PoolableConnectionFactory (Io exception: The Network Adapter could not establish the connection)

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