Oracle JDBC connection with Weblogic 10 datasource mapping, giving problem java.sql.SQLException: Closed Connection

StackOverflow https://stackoverflow.com/questions/2445561

Question

Oracle JDBC connection with Weblogic 10 datasource mapping, giving problem java.sql.SQLException: Closed Connection

I am using weblogic 10 JNDI datasource to create JDBC connections, below is my config

<?xml version="1.0" encoding="UTF-8"?>
<jdbc-data-source xmlns="http://www.bea.com/ns/weblogic/90" xmlns:sec="http://www.bea.com/ns/weblogic/90/security" xmlns:wls="http://www.bea.com/ns/weblogic/90/security/wls" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.bea.com/ns/weblogic/920 http://www.bea.com/ns/weblogic/920.xsd">
  <name>XL-Reference-DS</name>
  <jdbc-driver-params>
    <url>jdbc:oracle:oci:@abc.XL.COM</url>
    <driver-name>oracle.jdbc.driver.OracleDriver</driver-name>
    <properties>
      <property>
        <name>user</name>
        <value>DEV_260908</value>
      </property>
      <property>
        <name>password</name>
        <value>password</value>
      </property> 
      <property>
        <name>dll</name>
        <value>ocijdbc10</value>
      </property>
      <property>
        <name>protocol</name>
        <value>oci</value>
      </property> 
      <property>
        <name>oracle.jdbc.V8Compatible</name>
        <value>true</value>
      </property>
      <property>
        <name>baseDriverClass</name>
        <value>oracle.jdbc.driver.OracleDriver</value>
      </property>
    </properties>
  </jdbc-driver-params>
  <jdbc-connection-pool-params>
    <initial-capacity>1</initial-capacity>
    <max-capacity>100</max-capacity>
    <capacity-increment>1</capacity-increment>
    <test-connections-on-reserve>true</test-connections-on-reserve>
    <test-table-name>SQL SELECT 1 FROM DUAL</test-table-name>
  </jdbc-connection-pool-params>
  <jdbc-data-source-params>
    <jndi-name>ReferenceData</jndi-name>
    <global-transactions-protocol>OnePhaseCommit</global-transactions-protocol>
  </jdbc-data-source-params>
</jdbc-data-source>

When I run a bulk task where there are lots of connections made and closed, sometimes it gives connection closed exception for any of the task in the bulk task.

Below is detailed exception'

java.sql.SQLException: Closed Connection
 at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:111)
 at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:145)
 at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:207)
 at oracle.jdbc.driver.OracleStatement.ensureOpen(OracleStatement.java:3512)
 at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3265)
 at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:3367)

Any ideas?

Was it helpful?

Solution 2

Problem was due to connection sharing across code.... bad programming.... :( corrected it.... thanks

OTHER TIPS

You can change <global-transactions-protocol> parameter to none and execute the code:

<jdbc-data-source-params>
    <jndi-name>ReferenceData</jndi-name>
    <global-transactions-protocol>none</global-transactions-protocol>
</jdbc-data-source-params>
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