How to declare an array to take more than 10,000 characters

Hi Guys
Need some help

I am reading the string values from the text files into the shell script and had them feed into array
I have declared an associative array as
TYPE t_user_id_tab IS TABLE OF VARCHAR2(3000);\n
my_user_id t_user_id_tab;\n
varchar2 is limiting me to take only 32760 characters
but I have a text files which has more than 1100 users with length of each user id is 8
1100* 8 = 8800 + the '',sapces

so I am looking around 10,000 characters is there a way that I can declare the array of string to take 10,00 characters

Thanks in advance
Pinky