Oracle error: java.sql.sqlrecoverableException: Closed Connection

Question

need help on this closed connection
getting oracle error: java.sql.sqlrecoverableException: Closed Connection when running a java application using tomcat api to oracle 11g database EE 11.2.0.3.0 on windows 2008 R2
The process is reading data from an Oracle database using user_sdo_geom_metadata , memory allocated to DB is 5GB, java pool size 1G allocated , below is the code which gets data from Oracle
<NamedDataSourceDefinition:NamedDataSourceDefinition xmlns:NamedDataSourceDefinition="http://www.mapinfo.com/mxp" xmlns="http://www.mapinfo.com/mxp" xmlns:gml="http://www.opengis.net/gml"xmlns:ns2="http://www.mapinfo.com/midev/service/common/v1" xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:v1="http://www.mapinfo.com/midev/service/namedresource/v1"version="MXP_WorkSpace_1_5"> 
<ConnectionSet/> 
<DataSourceDefinitionSet> 
<DBDataSourceDefinition id="TXLANDMARKS"> 
<DataSourceName>txlandmarks</DataSourceName> 
<ConnectionMember> 
<InlineDBConnection dbType="oracle"> 
<JDBCDriverParameters> 
<JDBCUrl>jdbc:oracle:thin:@NOIORAENT2K8-64:1521:FMETEST</JDBCUrl> 
<DriverPropertySet> 
<Property name="user" value="NOIDADATADEV"/> 
<Property name="password" value="mndata"/>
</DriverPropertySet>
</JDBCDriverParameters>
</InlineDBConnection>
</ConnectionMember>
<DBTable owner="NOIDADATADEV" useQuotes="true">TXLANDMARKS</DBTable>
</DBDataSourceDefinition>
</DataSourceDefinitionSet>
<DataSourceRef ref="TXLANDMARKS"/>
</NamedDataSourceDefinition:NamedDataSourceDefinition>
Both the machines can ping to each other successfully, no firewall exists between them, these are connection setting been used in pooling-datasource-factory.properties
poolingDataSourceFactoryClass=com.mapinfo.midev.dbms.jdbc.TomcatDataSourceFactory
# what follows are properties specific to com.mapinfo.midev.dbms.jdbc.TomcatDataSourceFactory
# defaultAutoCommit - the default auto commit state of the connection. if
# not set the assumes the driver default
# defaultAutoCommit =
# (int) The maximum number of active connections that can be allocated from # this pool at the same time. The default value is 20
maxActive = 10
# (int) The maximum number of connections that should be kept in the pool at # all times. Default value is maxActive. Idle connections are checked # periodically (if enabled) and connections that been idle for longer than
# minEvictableIdleTimeMillis will be released.
maxIdle = 10
# (int) The minimum number of established connections that should be kept in  the pool at all times. The connection pool can shrink below this number if # validation queries fail. Default value is 10
minIdle = 5
# (int)The initial number of connections that are created when the pool is # started. Default value is 10
initialSize = 5
# (int) The maximum number of milliseconds that the pool will wait (when # there are no available connections) for a connection to be returned before # throwing an exception. Default value is 30000 (30 seconds)
# maxWaitMillis = 30000
# (int) The number of milliseconds to sleep between runs of the idle # connection validation/cleaner thread. This value should not be set under 1
# second. It dictates how often we check for idle, abandoned connections,
# and how often we validate idle connections. The default value is 5000
# (5 seconds).
# timeBetweenEvictionRunsMillis = 5000
# (int) The minimum amount of time an object may sit idle in the pool before
# it is eligible for eviction. The default value is 60000 (60 seconds).
# minEvictableIdleTimeMillis = 60000
# (boolean) Flag to remove abandoned connections if they exceed the
# removeAbandonedTimout. If set to true a connection is considered abandoned
# and eligible for removal if it has been in use longer than the
# removeAbandonedTimeout Setting this to true can recover db connections
# from applications that fail to close a connection. See also
# logAbandoned The default value is false.
# removeAbandoned = false
# (int) Timeout in seconds before an abandoned(in use) connection can be
# removed. The default value is 60 (60 seconds). The value should be set to
# the longest running query your applications might have.
# removeAbandonedTimeout = 60
# (boolean) Flag to log stack traces for application code which abandoned a
# Connection. Logging of abandoned Connections adds overhead for every
# Connection borrow because a stack trace has to be generated. The default
# value is false.
# logAbandoned = false
# (long) Time in milliseconds to keep this connection. When a connection is
# returned to the pool, the pool will check to see if the now
# - time-when-connected > maxAge has been reached, and if so, it closes the
# connection rather than returning it to the pool. The default value is 0,
# which implies that connections will be left open and no age check will be
# done upon returning the connection to the pool.
# maxAgeMillis = 0

Answer 1

Hi,
I understand that you have raised a SR for this issue which is being worked upon by our team.
Additionally, please note that the "Closed connection" error typically happens because a timeout parameter of some sort timed out the connection. This could be a parameter specified in your datasource, in your application code, or network (such as a firewall).
You may also want to -
1.  check your database to be sure it is not timing out connections.
2.  Make sure your network is running efficiently and that it can provide fast connections,
3. Check your Java Virtual Machine (JVM) Code Cache For Oracle Enterprise Data Quality for any memory related issues
Thanks,
Shwet