oracle金牌认证都没解决的问题哦~！！！！！

Question

首先人工手动添加三条数据，然后再执行查询操作，导致查询结果报错，而且每次都是添加了三条或者三条以上时报错，两条或者一条的情况则正常，
具体代码如下： CREATE OR REPLACE PACKAGE aaa
    AS    TYPE typUserId IS TABLE OF m_user.user_id%TYPE  
        INDEX BY BINARY_INTEGER;
    TYPE typUserNm IS TABLE OF m_user.user_nm%TYPE  
        INDEX BY BINARY_INTEGER;    TYPE typPostId IS TABLE OF m_post.post_id%TYPE  
        INDEX BY BINARY_INTEGER;
    TYPE typPostNm IS TABLE OF m_post.post_nm%TYPE  
        INDEX BY BINARY_INTEGER;    ·············END;CREATE OR REPLACE PACKAGE BODY aaa    AS
    ·············    FUNCTION FN_SEL_DATA(
                iNumCount               IN      NUMBER,                 
                iTypPostId              IN      typPostId,              
                iTypUnGetUserId         IN      typUserId,             
                iNumRecCnt              OUT     NUMBER,                 
                iTypUserId              OUT     typUserId,             
                iTypUserNm              OUT     typUserNm,             
                iTypPostNm              OUT     typPostNm,             
                oVchrErrMsg             OUT     VARCHAR2                ｴﾗｰﾒｯｾｰｼﾞ
        )   RETURN NUMBER
        IS
           ｶｰｿﾙ
            CURSOR CurUser
                IS
                    SELECT
                            m_user.user_id,
                            m_user.user_nm,
                            m_user.post_id,
                            m_post.post_nm
                    FROM
                            m_user, m_post;            wkVchrUserId    m_user.user_id%TYPE;   
            wkVchrUserNm    m_user.user_nm%TYPE;    
            wkChrPostId     m_user.post_id%TYPE;    
            wkVchrPostNm    m_post.post_nm%TYPE;                wkNumIndex      NUMBER := 0;
        BEGIN            -- ｴﾗｰﾒｯｾｰｼﾞ
            oVchrErrMsg :=  'FN_SEL_DATA';
            -- 
            iNumRecCnt := 0;            -- 
            wkNumCount  :=  iNumCount;
            wkTypPostId :=  iTypPostId;            -- ｶｰｿﾙｵｰﾌﾟﾝ
            OPEN CurUser;            -- ｶｰｿﾙﾌｪｯﾁ
            FETCH CurUser INTO wkVchrUserId,
                                wkVchrUserNm,
                                wkChrPostId,
                                wkVchrPostNm;            WHILE CurUser%NOTFOUND = FALSE LOOP                -- ﾁｪｯｸ
                IF FN_CHECK_POST_ID (wkChrPostId) = TRUE THEN                    -- 
                    wkNumIndex := wkNumIndex + 1 ;
                    iTypUserId(wkNumIndex) := wkVchrUserId;     
                    iTypUserNm(wkNumIndex) := wkVchrUserNm;     
                    iTypPostNm(wkNumIndex) := wkVchrPostNm;     
                END IF;                -- ｶｰｿﾙﾌｪｯﾁ
                FETCH CurUser INTO wkVchrUserId,
                                    wkVchrUserNm,
                                    wkChrPostId,
                                    wkVchrPostNm;
            END LOOP;         ·············/

Answer 1

补充：
客户端连接到数据库后，用Object Browser手动往表中添加3条以上数据。然后执行查询操作，把查询结果放到游标中，再把游标中的数据一条一条地赋到一维自定义表中（定义：TYPE typUserId IS TABLE OF m_user.user_id%TYPE  
        INDEX BY BINARY_INTEGER;
）
假设原表中有100条数据，当赋值到第103条时，数据库报数组溢出错误。但是INDEX BY BINARY_INTEGER定义的变量的下限应该是动态的，怎么会溢出呢，问题出在哪里呢？请各位指教。