Develop Reference

How to configure postgres sql URL in JDBC using spring.xml

We are using Spring mvc for our project. In Spring.xml we want to use our newly migrated postgres db. But we are not being able to configure the url.
<bean id="jt" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="ds"></property>
</bean>
This gives us an error: [err]
org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.postgresql.util.PSQLException: Invalid sslmode value: verify-full;sslrootcert=/opt/ibm/wlp/usr/servers/defaultServer/resources/iitStaticContent/root.crt
[err] at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:80)
[err] at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:390)

You use an ampersand (&), not a semicolon (;), to separate options in an URL.
You may need to encode that as & in XML.

WebLogic NameNotFoundException on JMS ConnectionFactory

I am using WebLogic Server: 12.1.1.0, Spring 3.2.11.RELEASE and Camel 2.13.4.
I have a ConnectionFactory on my WebLogic. The JNDI name is: jms/ConnectionFactory. I used a servlet to print all JNDI names in the server and found it inside the jms subcontext.
The Spring configuration is:
<bean id="jndiFactoryBean" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName" value="jms/ConnectionFactory"/>
<property name="jndiTemplate" ref="jndiTemplate"/>
<property name="lookupOnStartup" value="false"/>
<property name="proxyInterface" value="javax.jms.ConnectionFactory"/>
</bean>
I get the error:
GRAVE: Could not refresh JMS Connection for destination 'CamelTest' -
retrying in 5000 ms. Cause: JndiObjectTargetSource failed to obtain
new target object; nested exception is
javax.naming.NameNotFoundException: While trying to look up
jms/ConnectionFactory in
/app/webapp/camelweblogic.war/1720653836.; remaining name
'jms/ConnectionFactory'
The full trace is:
Caused by: javax.naming.NameNotFoundException: While trying to lookup 'jms.ConnectionFactory' didn't find subcontext 'jms'. Resolved '' [Root exception is javax.naming.NameNotFoundException: While trying to lookup 'jms.ConnectionFactory' didn't find subcontext 'jms'. Resolved '']; remaining name 'jms/ConnectionFactory'
at weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:237)
at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(ClusterableRemoteRef.java:464)
at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(ClusterableRemoteRef.java:272)
at weblogic.jndi.internal.ServerNamingNode_1211_WLStub.lookup(Unknown Source)
at weblogic.jndi.internal.WLContextImpl.lookup(WLContextImpl.java:418)
at weblogic.jndi.internal.WLContextImpl.lookup(WLContextImpl.java:406)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
at org.springframework.jndi.JndiTemplate$1.doInContext(JndiTemplate.java:154)
at org.springframework.jndi.JndiTemplate.execute(JndiTemplate.java:87)
at org.springframework.jndi.JndiTemplate.lookup(JndiTemplate.java:152)
at org.springframework.jndi.JndiTemplate.lookup(JndiTemplate.java:178)
at org.springframework.jndi.JndiLocatorSupport.lookup(JndiLocatorSupport.java:95)
at org.springframework.jndi.JndiObjectLocator.lookup(JndiObjectLocator.java:105)
at org.springframework.jndi.JndiObjectFactoryBean.lookupWithFallback(JndiObjectFactoryBean.java:231)
at org.springframework.jndi.JndiObjectFactoryBean.afterPropertiesSet(JndiObjectFactoryBean.java:217)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1573)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1511)
... 86 more
I have also already tried using the following JNDI names:
java:jms/ConnectionFactory,
java:ConnectionFactory,
ConnectionFactory,
java:comp/env/jms/ConnectionFactory

When you create the domain using WLST, what do you set the JNDI name of the connection factory to? Typically you will see something like this in your domain setup script (.py):
cf = create('ConnectionFactoryName', "ConnectionFactory")
cf.setName('ConnectionFactoryName')
cf.setJNDIName('ConnectionFactoryJNDIName')
In this case you would simply use
<bean id="jndiFactoryBean" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName" value="ConnectionFactoryJNDIName"/>
<property name="jndiTemplate" ref="jndiTemplate"/>
<property name="lookupOnStartup" value="false"/>
<property name="proxyInterface" value="javax.jms.ConnectionFactory"/>
</bean>
in your Spring bean. If you don't have a custom name it may be of value to add one.

Connection pool leakage with jBPM6 transactional tables

Environment : jBPM 6.0.1.Final, jboss EAP 6.2,spring data jpa 1.4.3.RELEASE,hibernate 4.1.1.Final,spring 4.0.0.RELEASE
I'm facing connection pooling leakage issue with jBPM6 tables and hibernate is firing 50+ queries to complete a single task. Let me explain you clearly.
In my application I'm performing DML operations on application related tables, I'm observing the connection realeasing machanism by debug as
DEBUG [org.jboss.jca.core.connectionmanager.pool.strategy.OnePool]
(http-/127.0.0.1:8080-4) mysqlDS: returnConnection(3492713e, false)
[1/20]
Connection pooling mechanism works fine and then I submitted a task to be completed by jbpm,some data inserting into jbpm6 tables like SessionInfo, Task and when data inserted,connection is not releasing and for next task also it is not using opened connections and opening new connections and go on.. Finally I'm getting the following message due to jbpm6 tables.
Caused by: java.sql.SQLException: javax.resource.ResourceException: IJ000453: Unable to get managed connection for java:jboss/datasources/mysqlDS
at org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:147)
at org.hibernate.ejb.connection.InjectedDataSourceConnectionProvider.getConnection(InjectedDataSourceConnectionProvider.java:70) [hibernate-entitymanager-4.2.7.SP1-redhat-3.jar:4.2.7.SP1-redhat-3]
at org.hibernate.internal.AbstractSessionImpl$NonContextualJdbcConnectionAccess.obtainConnection(AbstractSessionImpl.java:292) [hibernate-core-4.2.7.SP1-redhat-3.jar:4.2.7.SP1-redhat-3]
at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.obtainConnection(LogicalConnectionImpl.java:214) [hibernate-core-4.2.7.SP1-redhat-3.jar:4.2.7.SP1-redhat-3]
... 111 more
I'm using org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean and org.springframework.orm.jpa.JpaTransactionManager for session and transaction which is working for tables i insert data. But not working for data inserting by jbpm6.
I configured <property name="hibernate.connection.release_mode" value="auto"/> as well but not useful to get the connection back.
<!--Following entity manager for Mysql database-->
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="persistenceUnitName" value="masterDataMysql"/>
</bean>
<!--Transaction manager for both H2 and Mysql-->
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"/>
</bean>
Click here For error log
UPDATE : This is happening due to connections are not closing by jBPM6
Please help how to solve connection leaking issue with jbpm6 ???
Any help is highly appreciated.

java.sql.SQLException: Connections could not be acquired from the underlying database

I'm using Hibernate, MySQL connection is valid but I get the following.
How do I see more details on connection string that it's connecting to?
ERROR SchemaUpdate - could not get database metadata
java.sql.SQLException: Connections could not be acquired from the underlying database!
at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:106)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:529)
at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:128)
at org.hibernate.connection.C3P0ConnectionProvider.getConnection(C3P0ConnectionProvider.java:78)
at org.hibernate.tool.hbm2ddl.SuppliedConnectionProviderConnectionHelper.prepare(SuppliedConnectionProviderConnectionHelper.java:51)
at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:168)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:356)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1341)
Caused by: com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source.
at com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1319)
at com.mchange.v2.resourcepool.BasicResourcePool.prelimCheckoutResource(BasicResourcePool.java:557)
at com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:477)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:525)
... 10 more
ERROR SchemaUpdate - could not complete schema update
java.sql.SQLException: Connections could not be acquired from the underlying database!
at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:106)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:529)
at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:128)
at org.hibernate.connection.C3P0ConnectionProvider.getConnection(C3P0ConnectionProvider.java:78)
at org.hibernate.tool.hbm2ddl.SuppliedConnectionProviderConnectionHelper.prepare(SuppliedConnectionProviderConnectionHelper.java:51)
at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:168)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:356)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1341)
Caused by: com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source.
at com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1319)
at com.mchange.v2.resourcepool.BasicResourcePool.prelimCheckoutResource(BasicResourcePool.java:557)
at com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:477)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:525)
... 10 more
ERROR JDBCExceptionReporter - Connections could not be acquired from the underlying database!
org.hibernate.exception.GenericJDBCException: Cannot open connection
at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:126)
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:114)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:52)
at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:449)
at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)
at org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:142)
at org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:85)
at org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1354)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.hibernate.context.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:342)
at com.sun.proxy.$Proxy0.beginTransaction(Unknown Source)
Caused by: java.sql.SQLException: Connections could not be acquired from the underlying database!
at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:106)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:529)
at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:128)
at org.hibernate.connection.C3P0ConnectionProvider.getConnection(C3P0ConnectionProvider.java:78)
at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:446)
... 15 more
Caused by: com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source.
at com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1319)
at com.mchange.v2.resourcepool.BasicResourcePool.prelimCheckoutResource(BasicResourcePool.java:557)
at com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:477)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:525)
... 18 more
here's my hibernate xml:
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://127.0.0.1:3306/test</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password">xxxxxx</property>
<property name="show_sql">false</property>
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.hbm2ddl.auto">update</property>
<property name="connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
<property name="hibernate.c3p0.max_statements">200</property>
<property name="hibernate.c3p0.min_size">20</property>
<property name="hibernate.c3p0.max_size">200</property>
<property name="hibernate.c3p0.idle_test_period">300</property>
<property name="hibernate.c3p0.timeout">300</property>
<property name="hibernate.c3p0.max_statements">200</property>
<property name="current_session_context_class">thread</property>
</session-factory>
</hibernate-configuration>

In my case it was problem that c3p0-0.9.2.1.jar file was not copied by maven into src/main/webapp/web-inf/libs

I will recommend two things to get this problem resolved :
First, try mentioning your database name in capital letters. Though db is case insensitive still , sometimes it runs fine with caps.
Secondly , this problem may arise because of some extra stuff you might have appended with your session factory value. For example (i will take code i used and faced this problem and the got rid of it) :
Part of my xml goes like this :
<session-factory>
<property name="hbm2ddl.auto">update</property>
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="connection.url">jdbc:mysql://10.184.56.183:3306/******?relaxAutoCommit=true&autoReconnect=true&useUnicode=true&characterEncoding=utf8</property>
<property name="connection.username">******</property>
<property name="connection.password">******</property>
<property name="hibernate.show_sql">true</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.current_session_context_class">thread</property>
<property name="hibernate.connection.pool_size">5</property>
<property name="hibernate.connection.shutdown">true</property>
<property name="hibernate.cache.provider_class">org.hibernate.cache.EhCacheProvider</property>
<property name="hibernate.cache.use_second_level_cache">false</property>
<property name="hibernate.cache.use_query_cache">false</property>
<property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
<property name="hibernate.c3p0.min_size">2</property>
<property name="hibernate.c3p0.max_size">5</property>
<property name="hibernate.c3p0.timeout">108000</property>
<property name="hibernate.c3p0.max_statements">50</property>
<property name="hibernate.c3p0.idle_test_period">1000</property>
<property name="hibernate.c3p0.validate">true</property>
<property name="hibernate.c3p0.acquire_increment">5</property>
So keep trimming extra values like clean your database connection url and other stuff. I faced problem while generating code from database table as well. So i created a different config xml and made that as simple as possible and thats it. It went very fine .

I solved this challange by following Confluence Support article.
The Causes and Resolutions as stated by the above blog post for the issue of
cannot establish a connection to its database. are
The database configuration details you entered are incorrect or have
changed. For example, the database name or database
username/password for your Confluence database. Confirm that the
database username, password, and connection URL in
/confluence.cfg.xml are incorrect, and if not
update them accordingly.
The URL for the database is incorrect.
For example, if the database connection is jdbc:mysql://yma/confluence?autoReconnect=true, does the host 'yma'
exist and is the database server installed on 'yma'? Check
/confluence.cfg.xml to find this entry.
The database server is not running. If your database server is down, restart it and check the logs to see why it had failed or
stopped.
The network is down (or there is a firewall in between Confluence and its database) and the connection to the database
cannot be established. If your network is down, or a new firewall is
installed, consult with your System Administrator for further
troubleshooting.
Your database password has expired.
If your password has expired (and you will only discover this if you try to connect to your
database via your database client or an external database tool such
as DbVisualizer), update your password. You may want to deactivate
expiring passwords for your Confluence database user to prevent the
problem from happening again. Be sure to consult with your DBA about
this.
Postgres specific issue: the Postgres encryption method has been altered or changed when migrating or upgrading Confluence, the
environment, etc. Check the pg_hba.conf file. If the method is set
to ident change it to md5.
MySQL specific issue: there are too many connection requests that triggered MySQL server to block Confluence from making any
requests. See this MySQL article for resolution.

I had this problem and the issue was our office IP address being blocked by MySQL server due to many connect attempts using bad credentials.
Make sure you can connect to the server using the same method/network as your application. If you get this or something like this when attempting to connect using some MySQL client (like Workbench)
Host 'XXX-XXX-XXX-XXX.static.XXXXXX.XXX' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'
Your IP is blocked and that is the issue.

How to configure query timeout threshold for c3p0/hibernate

I have an application that is using Hibernate 3, c3p0, and spring 2.5.6. We have a datasource that is configured to speak with a postgres database. Everything was working great until a firewall was introduced between the application server and the database. We intermittently are getting java.net.SocketTimeoutException: Read Timed Out errors while trying to communicate with the database.
We believe the overhead of the firewall is causing a delayed response from the database. We want to verify this by increasing the thresh hold of how long a query should wait before deemed timed out (if that is even possible). Here is a stacktrace snippet
org.postgresql.util.PSQLException: An I/O error occured while sending to the backend.
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:218)
at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:451)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:350)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:254)
at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery(NewProxyPreparedStatement.java:76)
at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:208)
at org.hibernate.loader.Loader.getResultSet(Loader.java:1808)
at org.hibernate.loader.Loader.doQuery(Loader.java:697)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259)
at org.hibernate.loader.Loader.loadEntity(Loader.java:1881)
... 35 more
Caused by: java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(Unknown Source)
at org.postgresql.core.VisibleBufferedInputStream.readMore(VisibleBufferedInputStream.java:135)
at org.postgresql.core.VisibleBufferedInputStream.ensureBytes(VisibleBufferedInputStream.java:104)
at org.postgresql.core.VisibleBufferedInputStream.read(VisibleBufferedInputStream.java:73)
at org.postgresql.core.PGStream.ReceiveChar(PGStream.java:259)
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1166)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:192)
... 44 more

This has nothing to do with Hibernate or C3P0; you're getting a timeout from JDBC driver.
If you're using version 8.4 or higher, try setting socketTimeout to a higher value (or even zero for disabling it) in your connection string.

Try to configure timeout in jdbc properties, like this:
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"
destroy-method="close">
<property name="driverClassName" value="org.postgresql.Driver"/>
<property name="url" value="jdbc:postgresql://localhost:5433/yourdb"/>
<property name="username" value="some"/>
<property name="password" value=""/>
<property name="connectionProperties">
<props>
<prop key="socketTimeout">1000000</prop>
</props>
</property>
</bean>
Set for socketTimeout property as much value as required