Getting ORA-06502 error. Don't know why. Please help!

Question

I am getting the following error msgs and don't understand why?
ORA-06502: PL/SQL: numeric or value error: character string buffer too small
ORA-06512: at "SMSRPT.SP_DATA_CHECK", line 22
ORA-06512: at line 6
Here is my procedure. Can someone look at it and explain to me what i could possibly be doing wrong here.
create or replace
PROCEDURE sp_data_check(p_date number) is
--DECLARE
v_table_name VARCHAR2(35);
     v_string VARCHAR2(1024);
     v_result number;
     v_output VARCHAR2(1024);
v_report_date VARCHAR2(8);
v_dt VARCJAR2(8);
CRLF char(2) := chr(10)||chr(13);
     CURSOR c_table is
          select table_name
          from user_tab_columns
          where COLUMN_NAME = 'REPORT_DATE'
          and table_name NOT LIKE '%BIN%';
     BEGIN
OPEN c_table;
     loop
          FETCH c_table into v_table_name;
          exit when c_table%NOTFOUND;
          v_string:='select decode(max(report_date),'||p_date||',1,0)'|| ' from ' || v_table_name;
          execute immediate v_string into v_result;
v_report_date:='select max(report_date)'|| ' from ' || v_table_name;
excute immediate v_report_date into v_dt;
          v_output:=v_output||CRLF||v_table_name||': '||v_dt;
end loop;
if v_result =0 then
sp_send_mail('reports@localhost','[email protected]',
'Report Date Not There','The following tables do not have the correct report_date information:'||v_output);
end if;
close c_table;
END;
The bold section of my code is what i added that broke it. Before adding these lines of code it all worked fine.

Answer 1

That worked. Here is the revised working program
create or replace PROCEDURE sp_data_check(p_date number) is
--DECLARE
v_table_name VARCHAR2(35);
     v_string VARCHAR2(1024);
     v_result number;
     v_output VARCHAR2(1024);
v_report_date VARCHAR2(100);
v_dt VARCHAR2(100);
CRLF char(2) := chr(10)||chr(13);
     CURSOR c_table is
          select table_name
          from user_tab_columns
          where COLUMN_NAME = 'REPORT_DATE'
          and table_name NOT LIKE '%BIN%';
     BEGIN
OPEN c_table;
     loop
          FETCH c_table into v_table_name;
          exit when c_table%NOTFOUND;
          v_string:='select decode(max(report_date),'||p_date||',1,0)'|| ' from ' || v_table_name;
          execute immediate v_string into v_result;
v_report_date:='select max(report_date)'|| ' from ' || v_table_name;
execute immediate v_report_date into v_dt;
          v_output:=v_output||CRLF||v_table_name||': '||v_dt;
end loop;
if v_result =0 then
sp_send_mail('reports@localhost','[email protected]',
'Report Date Not There','The following tables do not have the correct report_date information:'||v_output);
end if;
close c_table;
END;