从匿名 pl/sql 获取 varchar 数组时出现 "ORA-03115: unsupported network datatype or representation" 错误

Question

我在从匿名 PL/SQL 块中获取类型的 varray 时遇到 "ORA-03115: unsupported network datatype or representation " 异常。

我的代码是：

    Connection con = null;
    CallableStatement cstmt = null;
    ResultSet rs = null;
    String dequeueQuery = "DECLARE " +
            " type namesarray IS VARRAY(5) OF VARCHAR2(10); " +
            " names namesarray;" +
            "   total integer;" +
            "   BEGIN " +

            "   names := namesarray('Kavita', 'Pritam', 'Ayan', 'Rishav', 'Aziz'); " +

            "   ? := names;"+

            " END;";

    try{

            con = getConnection();

            con.setAutoCommit(false);

            cstmt =(OracleCallableStatement )con.prepareCall(dequeueQuery);
            cstmt.registerOutParameter(1, OracleTypes.ARRAY);
            boolean b = cstmt.execute();
            Array arr = cstmt.getArray(1);

              String[] recievedArray = (String[]) arr.getArray();
              for (int i = 0; i < recievedArray.length; i++)

                System.out.println(recievedArray[i]);

            con.commit();

    }catch (Exception e) {
        try {
            con.rollback();
        } catch (SQLException e1) {
            e1.printStackTrace();
        }`

请帮帮我。提前谢谢你。

Answer 1

java.sql.SQLException: ORA-03115: unsupported network datatype or representation

这是由以下语句引起的：

cstmt.registerOutParameter(1, OracleTypes.ARRAY);

此语句表示数组将作为输出，但没有将实际的 Oracle 类型名称指定为第三个参数。您可以查看此 Oracle Doc 了解更多信息。

我们可以通过添加具有实际 Oracle 类型名称的第三个参数来修复异常“java.sql.SQLException: ORA-03115: unsupported network datatype or representation”。在你的情况下是 NAMESARRAY.

cstmt.registerOutParameter(1, OracleTypes.ARRAY,"NAMESARRAY");

但是上面的语句会抛出下面的异常 while 运行:

java.sql.SQLException: invalid name pattern: SCOTT.NAMESARRAY

这是因为我们没有在DB里面声明类型NAMESARRAY。上面的异常表明用户是 SCOTT，但您可以连接到您选择的用户并创建类型。

正在数据库中创建类型：

connect scott/tiger
CREATE OR REPLACE TYPE namesarray AS VARRAY(5) OF VARCHAR2(10) ;
/

一旦我们创建了类型 NAMESARRAY，如果我们在不更改的情况下执行您的代码，我们将遇到以下错误：

java.sql.SQLException: ORA-06550: line 1, column 180:

PLS-00382: expression is of wrong type ORA-06550: line 1, column 173:

PL/SQL: Statement ignored

此错误是因为我们已经在用户级别定义了类型，但我们正尝试在以下代码块中再次创建该类型：

String dequeueQuery = "DECLARE " +
            " type namesarray IS VARRAY(5) OF VARCHAR2(10); " +
            " names namesarray;" +
            "   total integer;" +
            "   BEGIN " +
            "   names := namesarray('Kavita', 'Pritam', 'Ayan', 'Rishav', 'Aziz'); " +
            "   ? := names;"+
            " END;";

因此，我们需要从中删除类型声明。

String dequeueQuery = "DECLARE " +
            " names namesarray;" +
            "   total integer;" +
            "   BEGIN " +
            "   names := namesarray('Kavita', 'Pritam', 'Ayan', 'Rishav', 'Aziz'); " +
            "   ? := names;"+
            " END;";

去掉之后如果我们编译后执行程序，应该可以看到如下输出：

Kavita
Pritam
Ayan
Rishav
Aziz

更新后的程序如下：

import java.io.*;
import java.sql.*;
import oracle.jdbc.*;

public class DBQC {
   public static void main(String[] args) {
   try {
      Connection con=null;
      Class.forName("oracle.jdbc.OracleDriver");
      String connStr = "jdbc:oracle:thin:scott/tiger@//dbhost:1521/dbsrvc";
      con=DriverManager.getConnection(connStr);
      if(con != null)
      {
         System.out.println("Connection succeeded");

         String dequeueQuery = "DECLARE " +
            " names namesarray;" +
            "   total integer;" +
            "   BEGIN " +
            "   names := namesarray('Kavita', 'Pritam', 'Ayan', 'Rishav', 'Aziz'); " +
            "   ? := names;"+
            " END;";

         CallableStatement cstmt = null;
         con.setAutoCommit(false);
         cstmt =(OracleCallableStatement)con.prepareCall(dequeueQuery);

         cstmt.registerOutParameter(1, OracleTypes.ARRAY,"NAMESARRAY");
         boolean b = cstmt.execute();
         Array arr = cstmt.getArray(1);

         String[] recievedArray = (String[]) arr.getArray();
         for (int i = 0; i < recievedArray.length; i++)
             System.out.println(recievedArray[i]);

         con.commit();
      }
      con.close();
    } catch(Exception e){e.printStackTrace();}
    }
}

Answer 2

我认为你正在使用 ojdbc14.jar

使用 ojbc6.jar 尝试一次，应该可以。

从匿名 pl/sql 获取 varchar 数组时出现 "ORA-03115: unsupported network datatype or representation" 错误

Getting "ORA-03115: unsupported network datatype or representation" error while fetching array of varchar from anonymous pl/sql

java

sql

oracle

jdbc