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HomeDatabaseMysql Tutorialoracle11g之ACL拙见

错误样例(使用UTL_HTTP发送http请求时,报出如下错误): 原因: 1、Oracle允许使用几个PL/SQL API(UTL_TCP, UTL_SMTP, UTL_MAIL, UTL_HTTP和 UTL_INADDR)访问外部网络服务,这些API都使用TCP协议。 2、在Oracle 10g是通过一个基于用户是否被授予执行某

  错误样例(使用UTL_HTTP发送http请求时,报出如下错误):

  原因:

  1、Oracle允许使用几个PL/SQL API(UTL_TCP, UTL_SMTP, UTL_MAIL, UTL_HTTP和 UTL_INADDR)访问外部网络服务,这些API都使用TCP协议。

  2、在Oracle 10g是通过一个基于用户是否被授予执行某个包的许可的 on/off开关来实现的,Oracle 11g引入了细粒度访问网络服务.

  3、通过在XML DB 数据库中使用访问控制列表(ACL)来实现,允许控制哪个用户能够访问哪个网络资源,而不关心包的授权。

  解决办法:

  -- 查询网络访问控制列表 acl

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Select * From  dba_network_acls

  -- 查询访问控制权限列表

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Select * From  dba_network_acl_privileges

  -- 查询数据库中的用户,用户名大小写敏感

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Select username From dba_users Where username Like '%ITS%'

  分配acl权限,执行如下sql语句:

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begin

  dbms_network_acl_admin.create_acl (       -- 创建访问控制文件(ACL)

    acl         => 'utl_http.xml',          -- 文件名称

    description => 'HTTP Access',           -- 描述

    principal   => 'ITS',                   -- 授权或者取消授权账号,大小写敏感

    is_grant    => TRUE,                    -- 授权还是取消授权

    privilege   => 'connect',               -- 授权或者取消授权的权限列表

    start_date  => null,                    -- 起始日期

    end_date    => null                     -- 结束日期

  );

 

  dbms_network_acl_admin.add_privilege (    -- 添加访问权限列表项

    acl        => 'utl_http.xml',           -- 刚才创建的acl名称

    principal  => 'ITS',                    -- 授权或取消授权用户

    is_grant   => TRUE,                     -- 与上同

    privilege  => 'resolve',                -- 权限列表

    start_date => null,                    

    end_date   => null

  );

 

  dbms_network_acl_admin.assign_acl (       -- 该段命令意思是允许访问acl名为utl_http.xml下授权的用户,使用oracle网络访问包,所允许访问的目的主机,及其端口范围。

    acl        => 'utl_http.xml',

    host       => '100.1.2.1',              -- ip地址或者域名,填写:9000/hello与:9000/是会报host无效的

                                            -- 且建议使用ip地址或者使用域名,若用localhost,当oracle不是安装在本机上的情况下,会出现问题

    lower_port => 9000,                     -- 允许访问的起始端口号

    upper_port => Null                      -- 允许访问的截止端口号

  );

  commit;

end;

 

begin

  dbms_network_acl_admin.assign_acl (       -- 可以授权多个主机,或者多个主机的多个端口

    acl        => 'utl_http.xml',

    host       => '10.100.49.138',

    lower_port => 80,

    upper_port => NUll

  );

  commit;

end;

 

请求测试:

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select utl_http.request('http://localhost:9000/hello?wsdl') From dual;

  若出现no listener,是因为授权主机时不能写localhost,应该写ip地址或者域名,如下图:

  移除acl和权限控制

  撤销分配acl到hostacl -- 与assign对应

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begin

  dbms_network_acl_admin.unassign_acl(

 

    acl        => 'utl_http.xml',

    host       => '100.1.2.1',             

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