Please see the image...ERROR as follows when run the job.

Exception in component tOracleConnection_1
java.sql.SQLException: Io exception: The Network Adapter could not establish the connection
    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:125)
    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:162)
    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:274)
    at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:319)
    at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:344)
    at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:148)
    at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
    at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:545)
    at java.sql.DriverManager.getConnection(Unknown Source)
    at java.sql.DriverManager.getConnection(Unknown Source)
    at swm_expedia.j_txclient.j_txClient.tOracleConnection_1Process(j_txClient.java:201)
    at swm_expedia.j_txclient.j_txClient.runJobInTOS(j_txClient.java:2395)
    at swm_expedia.j_txclient.j_txClient.main(j_txClient.java:2299)
Job j_txClient ended at 22:46 25/03/2008. [exit code=1]