java.sql.SQLException: Io exception: The Network Adapter could not establish the connection

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    Java.SQL.Exception The Network Adapter could not establish the connection

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    java.sql.SQLException: Io exception: The Network Adapter could not establish the connection
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    java.sql.SQLException: Io exception: The Network Adapter could not establish the connection

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    Root Cause Analysis

    1. java.sql.SQLException

      Io exception: The Network Adapter could not establish the connection

      at oracle.jdbc.dbaccess.DBError.throwSqlException()
    2. oracle.jdbc.dbaccess
      DBError.throwSqlException
      1. oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:189)
      2. oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:231)
      3. oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:345)
      3 frames
    3. Oracle jdbc
      OracleDriver.connect
      1. oracle.jdbc.driver.OracleConnection.<init>(OracleConnection.java:431)
      2. oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.java:515)
      3. oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:345)
      3 frames
    4. Java RT
      DriverManager.getConnection
      1. java.sql.DriverManager.getConnection(DriverManager.java:512)
      2. java.sql.DriverManager.getConnection(DriverManager.java:171)
      2 frames
    5. Unknown
      conn2.main
      1. conn2.main(conn2.java:18)
      1 frame