Listener refused the connection with the following error: ORA-12519, TNS:no appropriate service handler found

I work with Spring and Hibernate and I used Oracle 11g as database and I used JBoss 5.

I have a problem to re-establish the connection automatically

I used c3p0-0.9.1.1.jar

This my config in my application :

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"
"http://www.springframework.org/dtd/spring-beans.dtd">

<beans>
         <bean id="dataSource" class = "com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
       <property name="driverClass" value="oracle.jdbc.driver.OracleDriver"/>

        <property name="jdbcUrl" value="jdbc:oracle:thin:@localhost:1521:production"/> 



        <property name="user" value="admin"/>
        <property name="password" value="admin"/>
             <!-- pool sizing -->
        <property name="initialPoolSize" value="1" />
        <property name="minPoolSize" value="1" />
        <property name="maxPoolSize" value="200" />
        <property name="acquireIncrement" value="3" />
        <property name="maxStatements" value="0" />

        <!-- retries -->
        <property name="acquireRetryAttempts" value="30" />
        <property name="acquireRetryDelay" value="1000" /> <!-- 1s -->
        <property name="breakAfterAcquireFailure" value="false" />

        <!-- refreshing connections -->
        <property name="maxIdleTime" value="180" /> <!-- 3min -->
        <property name="maxConnectionAge" value="10" /> <!-- 1h -->

        <!-- timeouts and testing -->
        <property name="checkoutTimeout" value="30000" /> <!-- 30s -->
        <property name="idleConnectionTestPeriod" value="60" /> <!-- 60 -->
        <property name="testConnectionOnCheckout" value="true" /> 
        <property name="preferredTestQuery" value="SELECT 1 FROM DUAL" />
        <property name="testConnectionOnCheckin" value="true" /> 

    </bean>
</beans>

But I have this error :

com.mchange.v2.resourcepool.BasicResourcePool] (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1) com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@1a88493f -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception: 
java.sql.SQLException: Listener refused the connection with the following error:
ORA-12519, TNS:no appropriate service handler found

    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:113)
    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:263)
    at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:389)
    at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:454)
    at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)
    at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)
    at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:802)
    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.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
2016-04-06 10:00:09,300 INFO  [STDOUT] (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0) 10:00:09,300 WARN  [BasicResourcePool:1841] com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@696dbdb5 -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception: 
java.sql.SQLException: Listener refused the connection with the following error:
ORA-12519, TNS:no appropriate service handler found

    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:113)
    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:263)
    at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:389)
    at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:454)
    at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)
    at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)
    at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:802)
    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.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
2016-04-06 10:00:11,925 WARN  [com.mchange.v2.resourcepool.BasicResourcePool] (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2) com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@8003d4a -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception: 
java.sql.SQLException: Listener refused the connection with the following error:
ORA-12519, TNS:no appropriate service handler found

    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:113)
    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:263)
    at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:389)
    at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:454)
    at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)
    at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)
    at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:802)
    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.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
2016-04-06 10:00:11,956 WARN  [com.mchange.v2.resourcepool.BasicResourcePool] (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0) com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@75354d7 -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception: 
java.sql.SQLException: Listener refused the connection with the following error:
ORA-12519, TNS:no appropriate service handler found

    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:113)
    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:263)
    at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:389)
    at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:454)
    at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)
    at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)
    at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:802)
    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.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
2016-04-06 10:00:11,956 WARN  [com.mchange.v2.resourcepool.BasicResourcePool] (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0) com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@7ddd60e7 -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception: 
java.sql.SQLException: Listener refused the connection with the following error:
ORA-12519, TNS:no appropriate service handler found

    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:113)
    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:263)
    at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:389)
    at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:454)
    at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)
    at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)
    at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:802)
    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.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
2016-04-06 10:00:11,956 WARN  [com.mchange.v2.resourcepool.BasicResourcePool] (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1) com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@2704e3a7 -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception: 
java.sql.SQLException: Listener refused the connection with the following error:
ORA-12519, TNS:no appropriate service handler found

    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:113)
    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:263)
    at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:389)
    at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:454)
    at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)
    at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)
    at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:802)
    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.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
2016-04-06 10:00:11,972 WARN  [org.hibernate.util.JDBCExceptionReporter] (http-172.30.50.21-80-11) SQL Error: 0, SQLState: null
2016-04-06 10:00:11,972 ERROR [org.hibernate.util.JDBCExceptionReporter] (http-172.30.50.21-80-11) An attempt by a client to checkout a Connection has timed out.
2016-04-06 10:00:11,972 WARN  [org.hibernate.util.JDBCExceptionReporter] (http-172.30.50.21-80-58) SQL Error: 0, SQLState: null
2016-04-06 10:00:11,972 WARN  [org.hibernate.util.JDBCExceptionReporter] (http-172.30.50.21-80-53) SQL Error: 0, SQLState: null
2016-04-06 10:00:11,972 ERROR [org.hibernate.util.JDBCExceptionReporter] (http-172.30.50.21-80-53) Connections could not be acquired from the underlying database!

my application works correctly using the previous database configuration but my problem is that the error appeared when I have many connection to my application ( more than 200 users ) that why I used connection pool .

and when I have this error in the server oracle service works correctly since I can directly execute the query in the database. juste the problem is between the connection of my application which are deployed in jboss and oracle

in _BaseRootDAO.java I have this method :

/**
 * Return a new Session object that must be closed when the work has been completed.
 * @return the active Session
 */
public Session getSession() {
    return getSession(
        getConfigurationFileName());
}

/**
 * Return a new Session object that must be closed when the work has been completed.
 * @param configFile the config file must match the meta attribute "config-file" in the hibernate mapping file
 * @return the active Session
 */
protected Session getSession(String configFile) {
    if (null != session && session.isOpen()) return session;
    else if (null != sessionFactory) {
        Session s = currentSession.get();
        if (null == s || !s.isOpen()) {
            s = sessionFactory.openSession();
            currentSession.set(s);
        }
        return s;
    }
    else {
        Session s = currentSession.get();
        if (null == s || !s.isOpen()) {
            s = getSessionFactory(configFile).openSession();
            currentSession.set(s);
        }
        return s;
    }
}

update :

this is the current settings in the Oracle database

RESOURCE_NAME, CURRENT_UTILIZATION, MAX_UTILIZATION

sessions    93  156
enqueue_locks   81  149
enqueue_resources   18  52

I try to use the last version of c3p0

c3p0-0.9.5.2.jar insted of c3p0-0.9.1.1.jar

Answer

My use case:
I was running parallel connections to the DB(Oracle 12c) – 1 instance – to test if i get different sequence values from a sequence. As the parallel connections increase, there was a point where i got "ORA-12519, TNS:no appropriate service handler found"

What worked:

1.The processes limit_value was being hit. I increased it.

 ALTER system SET processes=XXX SCOPE=SPFILE;

Increase XXX incrementally(like +200 or so), because if you increase it to a too high value in 1 go, you might not be able to start your Oracle instance, as it cannot support it(READ: memory limitation, operating system limitation, …)

2. commit;
   
3. Restart DB.
   (IMPORTANT: Do not forget to restart the DB, to make the change effective in the spfile. For both static and dynamic parameters, changes are recorded in the spfile, and will only take effect in the next restart.)
   
4. Verify my change(limit_value):

select resource_name, current_utilization, max_utilization, limit_value
from v$resource_limit
where resource_name = 'processes';

show parameters processes; // will also work

NOTE: You might notice that the sessions parameters will also change. This is because sessions and processes work hand-in-hand, and Oracle will re-compute the sessions limit_value based on the chosen processes limit_value.