小编psa*_*j12的帖子

我有一个非常复杂的视图，形式如下

create or replace view loan_vw as 
select * from (with loan_info as (select loan_table.*,commission_table.* 
                                   from loan_table,
                                  commission_table where 
                                  contract_id=commission_id)
                select /*complex transformations */ from loan_info
                where type <> 'PRINCIPAL'
                union all 
                select /*complex transformations */ from loan_info
                where type = 'PRINCIPAL')

现在，如果我执行以下操作，则查询挂起

         select * from loan_vw where contract_id='HA001234TY56';

但是，如果我在子查询重构中进行硬编码或在同一会话中使用包级变量，则查询将在第二秒返回

create or replace view loan_vw as 
        select * from (with loan_info as (select loan_table.*,commission_table.* 
                                           from loan_table,
                                          commission_table where 
                                          contract_id=commission_id
                                          and contract_id='HA001234TY56'
                                          )
                        select /*complex transformations */ from loan_info
                        where type …

我们正在尝试使用dbms_ldap针对Microsoft AD对我们的应用程序用户进行身份验证,我们无法在离岸环境中对其进行测试

我们有三个具体问题

1)如何验证用户是否存在于Microsoft Active Directory中

我们使用以下代码来获取Application用户的专有名称

DBMS_LDAP.USE_EXCEPTION := FALSE;
retval := DBMS_LDAP.search_s(ld       => ldapSession,
                           base     => LDAP_BASE,
                           scope    => DBMS_LDAP.SCOPE_SUBTREE,
                           filter   => '(&(objectclass=USER)(SAMAccountName=' ||
                                       p_username || '))',
                           attrs    => attrList,
                           attronly => 0,
                           res      => ldapMessage);
  -- get the DN
if retval <> DBMS_LDAP_UTL.SUCCESS THEN
RAISE l_ldap_exception;
END IF;
userDN := DBMS_LDAP.get_dn(ldapSession, ldapMessage);

所以第一个问题是什么是价值

 userDN and ldapMessage

如果用户不存在于Microsoft AD中

2)假设用户存在并且在这种情况下输入了错误的密码将是retval的返回值

if p_password is null then
raise_application_error(-20000, 'Invalid Null password');
else
retval := DBMS_LDAP.simple_bind_s(ldapSession,userDN, p_password);
end if;

if retval <> …