如何从 Java 中的 SQL*Plus 以“SYS”身份连接到 Oracle

Question

我想从 Java 中的 SQL*Plus 以 SYS 的身份连接到 Oracle。但我无法连接。 但我能够以名为SCOTT 的用户身份连接。我的代码sn-p如下：

public static void test_script () {  

        String fileName = "@t.sql";  
        //t.sql contains "show user" command
        String sqlPath = "D:\\";  

        String sqlCmd = "sqlplus";  
       // String arg1   = "scott/tiger@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(Host=hostname)(Port=PORT ID))(CONNECT_DATA=(SID=SID)))";
        String arg1   = "sys as sysdba/tiger@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(Host=hostname)(Port=PORT ID))(CONNECT_DATA=(SID=SID)))";

       //String arg1="/ as sysdba";

        String arg2= fileName;
        //String arg2="conn /as sysdba";
        try {  
            String line;  
            ProcessBuilder pb = new ProcessBuilder(sqlCmd, arg1,arg2);  
            Map<String, String> env = pb.environment();  
            env.put("VAR1", arg1);  
            env.put("VAR2", arg2);  
            //env.put("VAR3", arg3);
            pb.directory(new File(sqlPath));  
            pb.redirectErrorStream(true);  
            Process p = pb.start();  
            BufferedReader bri = new BufferedReader  
            (new InputStreamReader(p.getInputStream()));  
            BufferedReader bre = new BufferedReader  
            (new InputStreamReader(p.getErrorStream()));  
            while ((line = bri.readLine()) != null) {  
            System.out.println(line);  
            }  
            bri.close();  
            while ((line = bre.readLine()) != null) {  
            System.out.println(line);  
            }  
            bre.close();  
            System.out.println("\n\n\n");
            System.out.println("Done.");  
            }  
            catch (Exception err) {  
                err.printStackTrace();  
            }  
        }  
   } 

当我尝试运行这段代码时，我发现了这个错误：

SQL*Plus: Release 11.2.0.1.0 Production on Thu Apr 10 11:08:59 2014

Copyright (c) 1982, 2010, Oracle.  All rights reserved.


SQL*Plus: Release 11.2.0.1.0 Production

Copyright (c) 1982, 2010, Oracle.  All rights reserved.

Use SQL*Plus to execute SQL, PL/SQL and SQL*Plus statements.

Usage 1: sqlplus -H | -V

    -H         Displays the SQL*Plus version and the
           usage help.
    -V         Displays the SQL*Plus version.

Usage 2: sqlplus [ [<option>] [{logon | /nolog}] [<start>] ]
...

...以及 SQL*Plus 的其余“使用”信息。

我是否提供了错误的 arg1 参数，或者是否有任何其他方式可以通过 Java 在 Oracle 中连接为 SYS。

Answer 1

认为你的 arg1 应该如下：

              String arg1   = "scott as sysdba/<syspwd>@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(Host=hostname)(Port=PORT ID))(CONNECT_DATA=(SID=SID)))";

Answer 2

您将所有连接信息作为单个值传递；相当于从命令行：

sqlplus "sys as sysdba/tiger@<connect_string>"

这将得到与打印 SQL*Plus 登录帮助相同的响应。您的密码也放错了地方，但并没有那么远。从命令行这将起作用：

sqlplus "sys/tiger" "as" "sysdba@<connect_string>"

所以你需要将 5 个参数传递给 ProcessBuilder，类似于：

    String sqlCmd = "sqlplus";  
    String arg1   = "sys/tiger";
    String arg2   = "as";
    String arg3   = "sysdba@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(Host=hostname)(Port=PORT ID))(CONNECT_DATA=(SID=SID)))";
    String arg4   = fileName;
    ...
        ProcessBuilder pb = new ProcessBuilder(sqlCmd, arg1, arg2, arg3, arg4);

仅当您的环境配置为允许远程连接为sysdba 时，这仍然有效。像sys 那样做任何事情应该是非常罕见的，并且拥有一个你想以sys 运行的脚本似乎足够不寻常，以至于Java 包装器看起来像是矫枉过正 - 并且看起来你可能会经常以sys 连接，这不是一个好主意 - 但也许这只是一个学习练习。

Answer 3

我通过 hit and try 及其连接字符串找到了答案。

如果想以 sysdba/sysoper 身份连接，则连接字符串应如下所示：

public static void test_script () {  
  String fileName = "@t.sql";  
  String sqlPath = "D:\\";  
  String sqlCmd = "sqlplus";  
  // IP_address,portid and sid are variables to be entered and t.sql is the file to be read .It contains show user command 
  String arg3   = "sys/oracle123@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(Host=IP_address)(Port=portid))(CONNECT_DATA=(SID=sid))) as sysdba";
  String arg4= fileName;
  try {  
    String line;  
    ProcessBuilder pb = new ProcessBuilder(sqlCmd,arg3,arg4);
    Map<String, String> env = pb.environment();  
    env.put("VAR3", arg3);
    env.put("VAR4", arg4);
    pb.directory(new File(sqlPath));  
    pb.redirectErrorStream(true);  
    Process p = pb.start();  
    BufferedReader bri = new BufferedReader(new InputStreamReader(p.getInputStream()));  
    BufferedReader bre = new BufferedReader(new InputStreamReader(p.getErrorStream()));  
    while ((line = bri.readLine()) != null) {  
        System.out.println(line);  
    }       
    bri.close();  
    while ((line = bre.readLine()) != null) {  
        System.out.println(line);  
    }  
    bre.close();  
    System.out.println("\n\n\n");
    System.out.println("Done.");  
  } catch (Exception err) {  
    err.printStackTrace();  
  }  
}  

Answer 4

您可以像下面这样轻松地从 java 调用 sqlplus。

String stringCommand =
            "sqlplus " + dbUser + "/" + dbPassword + "@(description=(address=(protocol=TCP)" +
                    "(host=" + dbHost + ")(port=" + dbPort + "))(connect_data=(service_name=" + dbName + "))) " +
                    "@" + sqlScriptFile + "";       

    int exitCode;
    Runtime rt = Runtime.getRuntime();
    Process process = null;
    try {
        process = rt.exec(stringCommand);
        exitCode = process.waitFor();
    } finally {
        process.destroy();
    }