Numeric or value error Line 410??? appending to lob

Question

line 410 is marked with line of '%%%%%%%%%%%%%%%%%%%%%'
This script is designed to profile data in a set of table by generating sql and running it with an execute immediate. It works by generating a set of code for each datatype and then executing the code twice for each table. Once for the summary profile and once for the detail profile. I've been starting at it awhile and can't figure out what the error means??? Thanks in advance!
set serveroutput on size 1000000
set feedback off
SET ECHO OFF
declare
c clob;
t varchar2(2000);
e varchar2(2000);
cursor c1 is select distinct owner,table_name from all_tab_columns
where table_name in ('PS_F_AP_AGING'
,'PS_F_AP_TRAN'
,'PS_F_VCHR_MTCH_EXP'
,'PS_F_APAR_NETTING'
,'PS_F_AR_AGING'
,'PS_F_AR_ACCOUNT_LN'
,'PS_F_AR_DSO'
,'PS_F_AR_TRAN'
,'PS_F_ASGN'
,'PS_F_CA_AMD'
,'PS_F_CA_DTL_DIST'
,'PS_F_CA_DTL_TRANS'
,'PS_F_CA_REV_RECOGN'
,'PS_F_EXP_DTL_DIST'
,'PS_F_GM_AWARD'
,'PS_F_GM_PRJ_TRAN'
,'PS_F_GM_PRP_AWD'
,'PS_F_PRJ_AC_CUR'
,'PS_F_PRJ_AC_PRDC'
,'PS_F_PRJ_CHNG'
,'PS_F_PRJ_CUR'
,'PS_F_PRJ_PRDC'
,'PS_F_PRJ_TRAN'
,'PS_F_PRP_VER_TRANS'
,'PS_F_RSRC_RT'
,'PS_F_INV_CYCLE_CNT'
,'PS_F_INV_LDGR'
,'PS_F_INV_TRANS'
,'PS_F_PHYSICAL_INV'
,'PS_F_BEGIN_BAL'
,'PS_F_JOURNAL'
,'PS_F_KK_ACTIVITY'
,'PS_F_KK_BALANCES'
,'PS_F_KK_BUD_ASSOC'
,'PS_F_KK_ENCUMBRAN'
,'PS_F_KK_EXCEPTION'
,'PS_F_KK_JOURNAL'
,'PS_F_KK_LEDGER'
,'PS_F_KK_OVERRIDES'
,'PS_F_KK_TRANS_LOG'
,'PS_F_LEDGER'
,'PS_F_MTCH_ANLYS'
,'PS_F_PO_DIST'
,'PS_F_PO_LINE'
,'PS_F_PO_SHIP_RCPT'
,'PS_F_PROC_CTLT'
,'PS_F_REQN'
,'PS_F_REQN_ANLYSIS'
,'PS_F_RTV'
,'PS_F_RTV_DIST'
,'PS_F_SCP_CAPACITY'
,'PS_F_SCP_INVENTORY'
,'PS_F_SCP_PRODN'
,'PS_F_SCP_PURCHASNG'
,'PS_F_SCP_SLS_FCST'
,'PS_F_SCP_TRANSFERS'
,'PS_F_SCPSLS_ACTUAL'
,'PS_F_VCHR'
,'PS_F_VCHR_DIST_LN'
,'PS_F_VCHR_LN'
/*,'PS_D_ACCOUNT'
,'PS_D_ACTGRY_AR_VW'
,'PS_D_AGING_CTGRY'
,'PS_D_ALTACCT'
,'PS_D_ANLYS_TYPE'
,'PS_D_AP_DOC_TYPE'
,'PS_D_AP_PTR_STAT'
,'PS_D_AP_PTR_TYPE'
,'PS_D_AP_PYMNT_TRMS'
,'PS_D_AP_VTR_STAT'
,'PS_D_AP_VTR_TYPE'
,'PS_D_APPOST_STATUS'
,'PS_D_AR_DOC_TYPE'
,'PS_D_AR_ITR_STAT'
,'PS_D_AR_ITR_TYPE'
,'PS_D_AR_PTR_STAT'
,'PS_D_AR_PTR_TYPE'
,'PS_D_ASGN'
,'PS_D_ASGN_STAT'
,'PS_D_BANK_ACCT'
,'PS_D_BOOK_CODE'
,'PS_D_BU_LED_GRP'
,'PS_D_BUCKET'
,'PS_D_BUDGET_REF'
,'PS_D_BUSINESS_UNIT'
,'PS_D_BUYER'
,'PS_D_CA'
,'PS_D_CA_AMD_RSN'
,'PS_D_CA_AMD_TYPE'
,'PS_D_CA_DTL'
,'PS_D_CA_JNK'
,'PS_D_CARRIER'
,'PS_D_CHANNEL'
,'PS_D_CHARTFIELD1'
,'PS_D_CHARTFIELD2'
,'PS_D_CHARTFIELD3'
,'PS_D_CLASS_FIELD'
,'PS_D_CNCL_STATUS'
,'PS_D_COLLECT_STAT'
,'PS_D_COMP_STATUS'
,'PS_D_CUST_ORG'
,'PS_D_CUSTOMER'
,'PS_D_DAY'
,'PS_D_DEDUCT_STAT'
,'PS_D_DEPT'
,'PS_D_DET_BUDGET'
,'PS_D_DET_PERIOD'
,'PS_D_DISPUTE_STAT'
,'PS_D_DIST_ACCT'
,'PS_D_DLVRY_STATUS'
,'PS_D_DT_PATTERN'
,'PS_D_ENTRY_RSTYP'
,'PS_D_EX_LOCATION'
,'PS_D_EXP_LN'
,'PS_D_EXP_RPT'
,'PS_D_FUND'
,'PS_D_GL_ADJ_TYPE'
,'PS_D_GM_AWARD'
,'PS_D_GM_INST'
,'PS_D_GM_PI'
,'PS_D_GM_PROP_PROJ'
,'PS_D_GM_PRP'
,'PS_D_GM_SPONSOR'
,'PS_D_INV_ITEM'
,'PS_D_INV_LOCATION'
,'PS_D_INVST_REASON'
,'PS_D_JOBCODE'
,'PS_D_JRNL_SOURCE'
,'PS_D_KK_BUDG_JNK'
,'PS_D_KK_BUDG_TYPE'
,'PS_D_KK_SOURCE_TRAN'
,'PS_D_LEDGER'
,'PS_D_LOT'
,'PS_D_MATCH_RULE'
,'PS_D_MRCHNT'
,'PS_D_MTCH_STATUS'
,'PS_D_OPER_UNIT'
,'PS_D_ORD_CAPTURE'
,'PS_D_ORIGIN'
,'PS_D_PATTERN_DAY'
,'PS_D_PERSON'
,'PS_D_PERSON_APOPID'
,'PS_D_PERSON_ARSPL'
,'PS_D_PERSON_COLTR'
,'PS_D_PERSON_CRNYST'
,'PS_D_PO_STATUS'
,'PS_D_PRJ'
,'PS_D_PRJ_AC'
,'PS_D_PRJ_AC_STAT'
,'PS_D_PRJ_CHNG'
,'PS_D_PRJ_HLTH'
,'PS_D_PRJ_ROLE'
,'PS_D_PRJ_RSRC'
,'PS_D_PRJ_RSRC_TYPE'
,'PS_D_PRJ_STAT'
,'PS_D_PRJ_TRAN_STAT'
,'PS_D_PRODUCT'
,'PS_D_PROGRAM_FDM'
,'PS_D_PRP'
,'PS_D_PRP_DTL'
,'PS_D_PY_TRMS_AR_VW'
,'PS_D_PYMNT_MTHD'
,'PS_D_RECLN_STATUS'
,'PS_D_RECV_STATUS'
,'PS_D_REQ_STATUS'
,'PS_D_REQLN_STATUS'
,'PS_D_RTRN_REASON'
,'PS_D_RTV_STATUS'
,'PS_D_RTVLN_STATUS'
,'PS_D_SALES_ORG'
,'PS_D_SCENARIO'
,'PS_D_SHIPTO'
,'PS_D_SO'
,'PS_D_SOURCE_TBL'
,'PS_D_STAT_CODE'
,'PS_D_SUPPLIER'
,'PS_D_TASK_TYPE'
,'PS_D_TIME'
,'PS_D_UOM'
,'PS_D_USER'
,'PS_D_WORK_CENTER'
,'PS_DEMAND_INF_INV'
,'PS_DEMAND_INV'
,'PS_DEPL_PLAN'
,'PS_DEPOSIT_CONTROL'
,'PS_DISTRIB_LIN'*/);
begin
for i in c1 loop
dbms_lob.createtemporary(c, true);
t := 'INSERT INTO DATA_PROFILE_COL_SUM ';
dbms_lob.writeappend(c,length(t), t);
--DBMS_OUTPUT.PUT_LINE(T);
----date
FOR MYSQLTEXT IN (SELECT
'select '
|| '''' || C.table_name || '''' || ' as tname, '
|| '''' || C.column_name || '''' || ' as cname, '
|| '''' || C.data_type || '''' || ' as data_type, '
|| '''' || nvl(c.data_length, 0) || '''' || ' as data_length, '
|| '''' || nvl(c.data_precision, 0) || '''' || ' as data_precision, '
|| '''' || nvl(c.data_scale, 0) || '''' || ' as data_scale, '
|| '''' || c.nullable || '''' || ' as nullable, '
|| '''' || nvl(c.num_distinct,0) || '''' || ' as num_distinct, '
|| '''' || nvl(c.density,0.0) || '''' || ' as density, '
|| '''' || nvl(c.num_nulls,0) || '''' || ' as num_nulls, '
|| '''' || nvl(c.char_col_decl_length,0) || '''' || ' as col_length, '
|| '''' || nvl(c.avg_col_len,0) || '''' || ' as avg_col_length, '
|| '''' || nvl(c.char_length,0) || '''' || ' as char_length, '
|| '''' || nvl(tblc.comments, 'NONE') || '''' || ' as table_comments, '
|| '''' || nvl(colc.comments, 'NONE') || '''' || ' as column_comments, '
|| ' count(*) as rcount, min('
|| c.column_name || ') as min_date, max('
|| c.column_name || ') as max_date, '
|| ' null as min_integer, null as max_integer, '
|| ' null as min_number, null as max_number, '
|| ' null as min_varchar2, null as max_varchar2, min(length('
|| c.column_name || ')) as min_len, max(length('
|| c.column_name || ')) as max_len, sysdate'
|| ' from '
|| C.owner || '.' || C.table_name
|| ' ' || CHR(13) || chr(10) || ' UNION ALL ' AS MYSQL
from sys.all_tab_columns c
inner join sys.all_tables t
on c.table_name = t.table_name
and c.owner = t.owner
left outer join sys.all_tab_comments tblc
on t.owner = tblc.owner
and t.table_name = tblc.table_name
left outer join sys.all_col_comments colc
on c.owner = colc.owner
and c.table_name = colc.table_name
and c.column_name = colc.column_name
where c.owner = I.OWNER
and c.data_type = 'DATE'
and c.table_name = I.TABLE_NAME
LOOP
-- DBMS_OUTPUT.PUT_LINE(MYSQLTEXT.MYSQL);
dbms_lob.writeappend(c, length(MYSQLTEXT.MYSQL),MYSQLTEXT.MYSQL);
END LOOP;
----number
FOR MYSQLTEXT IN (select
'select '
|| '''' || c.table_name || '''' || ' as tname, '
|| '''' || c.column_name || '''' || ' as cname, '
|| '''' || c.data_type || '''' || ' as data_type, '
|| '''' || nvl(c.data_length, 0) || '''' || ' as data_length, '
|| '''' || nvl(c.data_precision, 0) || '''' || ' as data_precision, '
|| '''' || nvl(c.data_scale, 0) || '''' || ' as data_scale, '
|| '''' || c.nullable || '''' || ' as nullable, '
|| '''' || nvl(c.num_distinct,0) || '''' || ' as num_distinct, '
|| '''' || nvl(c.density,0.0) || '''' || ' as density, '
|| '''' || nvl(c.num_nulls,0) || '''' || ' as num_nulls, '
|| '''' || nvl(c.char_col_decl_length,0) || '''' || ' as col_length, '
|| '''' || nvl(c.avg_col_len,0) || '''' || ' as avg_col_length, '
|| '''' || nvl(c.char_length,0) || '''' || ' as char_length, '
|| '''' || nvl(tblc.comments, 'NONE') || '''' || ' as table_comments, '
|| '''' || nvl(colc.comments, 'NONE') || '''' || ' as column_comments, '
|| ' count(*) as rcount, null as min_date, null as max_date, '
|| ' null as min_integer, null as max_integer, min('
|| c.column_name || ') as min_number, max('
|| c.column_name || ') as max_number, null as min_varchar2, null as max_varchar2, min(length('
|| c.column_name || ')) as min_len, max(length('
|| c.column_name || ')) as max_len, sysdate '
|| ' from '
|| t.owner || '.' || c.table_name
|| ' ' || CHR(13) || chr(10) || ' UNION ALL ' AS MYSQL
from sys.all_tab_columns c
inner join sys.all_tables t
on c.table_name = t.table_name
and c.owner = t.owner
left outer join sys.all_tab_comments tblc
on t.owner = tblc.owner
and t.table_name = tblc.table_name
left outer join sys.all_col_comments colc
on c.owner = colc.owner
and c.table_name = colc.table_name
and c.column_name = colc.column_name
where c.owner = I.OWNER
and c.data_type = 'NUMBER'
and c.table_name = I.TABLE_NAME
LOOP
dbms_lob.writeappend(c, length(MYSQLTEXT.MYSQL),MYSQLTEXT.MYSQL);
END LOOP;
--integer
FOR MYSQLTEXT IN (select
'select '
|| '''' || c.table_name || '''' || ' as tname, '
|| '''' || c.column_name || '''' || ' as cname, '
|| '''' || c.data_type || '''' || ' as data_type, '
|| '''' || nvl(c.data_length, 0) || '''' || ' as data_length, '
|| '''' || nvl(c.data_precision, 0) || '''' || ' as data_precision, '
|| '''' || nvl(c.data_scale, 0) || '''' || ' as data_scale, '
|| '''' || c.nullable || '''' || ' as nullable, '
|| '''' || nvl(c.num_distinct,0) || '''' || ' as num_distinct, '
|| '''' || nvl(c.density,0.0) || '''' || ' as density, '
|| '''' || nvl(c.num_nulls,0) || '''' || ' as num_nulls, '
|| '''' || nvl(c.char_col_decl_length,0) || '''' || ' as col_length, '
|| '''' || nvl(c.avg_col_len,0) || '''' || ' as avg_col_length, '
|| '''' || nvl(c.char_length,0) || '''' || ' as char_length, '
|| '''' || nvl(tblc.comments, 'NONE') || '''' || ' as table_comments, '
|| '''' || nvl(colc.comments, 'NONE') || '''' || ' as column_comments, '
|| ' count(*) as rcount, null as min_date, null as max_date, '
|| ' null as min_integer, null as max_integer, min('
|| c.column_name || ') as min_number, max('
|| c.column_name || ') as max_number, null as min_varchar2, null as max_varchar2, min(length('
|| c.column_name || ')) as min_len, max(length('
|| c.column_name || ')) as max_len, sysdate '
|| ' from '
|| t.owner || '.' || c.table_name
|| ' ' || CHR(13) || chr(10) || ' UNION ALL ' AS MYSQL
from sys.all_tab_columns c
inner join sys.all_tables t
on c.table_name = t.table_name
and c.owner = t.owner
left outer join sys.all_tab_comments tblc
on t.owner = tblc.owner
and t.table_name = tblc.table_name
left outer join sys.all_col_comments colc
on c.owner = colc.owner
and c.table_name = colc.table_name
and c.column_name = colc.column_name
where c.owner = I.OWNER
and c.data_type = 'INTEGER'
and c.table_name = I.TABLE_NAME
LOOP
dbms_lob.writeappend(c, length(MYSQLTEXT.MYSQL),MYSQLTEXT.MYSQL);
END LOOP;
--char and varchar
FOR MYSQLTEXT IN (select
'select '
|| '''' || c.table_name || '''' || ' as tname, '
|| '''' || c.column_name || '''' || ' as cname, '
|| '''' || c.data_type || '''' || ' as data_type, '
|| '''' || nvl(c.data_length, 0) || '''' || ' as data_length, '
|| '''' || nvl(c.data_precision, 0) || '''' || ' as data_precision, '
|| '''' || nvl(c.data_scale, 0) || '''' || ' as data_scale, '
|| '''' || c.nullable || '''' || ' as nullable, '
|| '''' || nvl(c.num_distinct,0) || '''' || ' as num_distinct, '
|| '''' || nvl(c.density,0.0) || '''' || ' as density, '
|| '''' || nvl(c.num_nulls,0) || '''' || ' as num_nulls, '
|| '''' || nvl(c.char_col_decl_length,0) || '''' || ' as col_length, '
|| '''' || nvl(c.avg_col_len,0) || '''' || ' as avg_col_length, '
|| '''' || nvl(c.char_length,0) || '''' || ' as char_length, '
|| '''' || nvl(tblc.comments, 'NONE') || '''' || ' as table_comments, '
|| '''' || nvl(colc.comments, 'NONE') || '''' || ' as column_comments, '
|| ' count(*) as rcount, null as min_date, null as max_date, '
|| ' null as min_integer, null as max_integer, '
|| ' null as min_number, null as max_number, min('
|| c.column_name || ') as min_varchar2, max('
|| c.column_name || ') as max_varchar2, min(length('
|| c.column_name || ')) as min_len, max(length('
|| c.column_name || ')) as max_len, sysdate'
|| ' from '
|| t.owner || '.' || c.table_name
|| ' ' || CHR(13) || chr(10) || ' UNION ALL ' AS MYSQL
from sys.all_tab_columns c
inner join sys.all_tables t
on c.table_name = t.table_name
and c.owner = t.owner
left outer join sys.all_tab_comments tblc
on t.owner = tblc.owner
and t.table_name = tblc.table_name
left outer join sys.all_col_comments colc
on c.owner = colc.owner
and c.table_name = colc.table_name
and c.column_name = colc.column_name
where c.owner = I.OWNER
and c.data_type in ('VARCHAR2', 'CHAR')
and c.table_name = I.TABLE_NAME
LOOP
dbms_lob.writeappend(c, length(MYSQLTEXT.MYSQL),MYSQLTEXT.MYSQL);
END LOOP;
e:='select null , null , null, null,null,null, null, null, null,null, null, null, null, null, null , null, null, null, null, null, null, null, null , null , null , null , null from dual where rownum < 0 ';
dbms_lob.writeappend(c, length(e),e);
execute immediate to_char(c);
dbms_lob.createtemporary(c, true);
t := 'insert INTO DATA_PROFILE_COL_DTL ';
dbms_lob.writeappend(c,length(t), t);
----date
FOR MYSQLTEXT IN (select
' select a.tname as table_name, a.cname as column_name, rownum as freq_rank, '
|| 'a.column_value as date_column_value, '
|| 'null as integer_column_value, null as number_column_value, null as varchar2_column_value, '
|| ' a.occurs, t.total_rows, round((((a.occurs * 1.0) / (t.total_rows * 1.0)) * 100), 5) as occurs_percent, '
|| ' a.capture_date'
|| ' from ( select '
|| '''' || c.table_name || '''' || ' as tname, '
|| '''' || c.column_name || '''' || ' as cname, '
|| c.column_name || ' as column_value, '
|| ' count(*) as occurs, sysdate as capture_date'
|| ' from '
|| t.owner || '.' || c.table_name
|| ' group by ' || c.column_name
|| ' order by count(*) desc )a inner join '
|| ' ( select ''' || c.table_name || ''' as tname, count(*) as total_rows from ' || t.owner || '.' || c.table_name || ') t '
|| ' on a.tname = t.tname where rownum <= 100'
|| CHR(13) || chr(10) || ' UNION ALL ' AS MYSQL
from sys.all_tab_columns c
inner join sys.all_tables t
on c.table_name = t.table_name
and c.owner = t.owner
where c.owner = i.owner
and c.data_type IN ('DATE')
and c.table_name = i.table_name
LOOP
dbms_lob.writeappend(c, length(MYSQLTEXT.MYSQL),MYSQLTEXT.MYSQL);
END LOOP;
----number
FOR MYSQLTEXT IN (select
' select a.tname as table_name, a.cname as column_name, rownum as freq_rank, '
|| 'null as date_column_value, '
|| 'a.column_value as integer_column_value, null as number_column_value, null as varchar2_column_value, '
|| ' a.occurs, t.total_rows, round((((a.occurs * 1.0) / (t.total_rows * 1.0)) * 100), 5) as occurs_percent, '
|| ' a.capture_date'
|| ' from ( select '
|| '''' || c.table_name || '''' || ' as tname, '
|| '''' || c.column_name || '''' || ' as cname, '
|| c.column_name || ' as column_value, '
|| ' count(*) as occurs, sysdate as capture_date'
|| ' from '
|| t.owner || '.' || c.table_name
|| ' group by ' || c.column_name
|| ' order by count(*) desc )a inner join '
|| ' ( select ''' || c.table_name || ''' as tname, count(*) as total_rows from ' || c.table_name || ') t '
|| ' on a.tname = t.tname where rownum <= 100'
|| CHR(13) || chr(10) || ' UNION ALL ' AS MYSQL
from sys.all_tab_columns c
inner join sys.all_tables t
on c.table_name = t.table_name
and c.owner = t.owner
where c.owner = I.OWNER
and c.data_type = 'INTEGER'
and c.table_name = I.TABLE_NAME
LOOP
dbms_lob.writeappend(c, length(MYSQLTEXT.MYSQL),MYSQLTEXT.MYSQL);
END LOOP;
--integer
FOR MYSQLTEXT IN (select
' select a.tname as table_name, a.cname as column_name, rownum as freq_rank, '
|| 'null as date_column_value, '
|| 'null as integer_column_value, a.column_value as number_column_value, null as varchar2_column_value, '
|| ' a.occurs, t.total_rows, round((((a.occurs * 1.0) / (t.total_rows * 1.0)) * 100), 5) as occurs_percent, '
|| ' a.capture_date'
|| ' from ( select '
|| '''' || c.table_name || '''' || ' as tname, '
|| '''' || c.column_name || '''' || ' as cname, '
|| c.column_name || ' as column_value, '
|| ' count(*) as occurs, sysdate as capture_date'
|| ' from '
|| t.owner || '.' || c.table_name
|| ' group by ' || c.column_name
|| ' order by count(*) desc )a inner join '
|| ' ( select ''' || c.table_name || ''' as tname, count(*) as total_rows from ' || t.owner || '.' || c.table_name || ') t '
|| ' on a.tname = t.tname where rownum <= 100'
|| CHR(13) || chr(10) || ' UNION ALL ' AS MYSQL
from sys.all_tab_columns c
inner join sys.all_tables t
on c.table_name = t.table_name
and c.owner = t.owner
where c.owner = I.OWNER
and c.data_type in ('NUMBER', 'DECIMAL')
and c.table_name = I.TABLE_NAME
LOOP
dbms_lob.writeappend(c, length(MYSQLTEXT.MYSQL),MYSQLTEXT.MYSQL);
END LOOP;
--char and varchar
FOR MYSQLTEXT IN (select
' select a.tname as table_name, a.cname as column_name, rownum as freq_rank, '
|| 'null as date_column_value, '
|| 'null as integer_column_value, null as number_column_value, a.column_value as varchar2_column_value, '
|| ' a.occurs, t.total_rows, round((((a.occurs * 1.0) / (t.total_rows * 1.0)) * 100), 5) as occurs_percent, '
|| ' a.capture_date'
|| ' from ( select '
|| '''' || c.table_name || '''' || ' as tname, '
|| '''' || c.column_name || '''' || ' as cname, '
|| c.column_name || ' as column_value, '
|| ' count(*) as occurs, sysdate as capture_date'
|| ' from '
|| t.owner || '.' || c.table_name
|| ' group by ' || c.column_name
|| ' order by count(*) desc )a inner join '
|| ' ( select ''' || c.table_name || ''' as tname, count(*) as total_rows from ' || t.owner || '.' || c.table_name || ') t '
|| ' on a.tname = t.tname where rownum <= 100'
|| CHR(13) || chr(10) || ' UNION ALL ' AS MYSQL
from sys.all_tab_columns c
inner join sys.all_tables t
on c.table_name = t.table_name
and c.owner = t.owner
where c.owner = I.OWNER
and c.data_type in ('VARCHAR2', 'CHAR')
and c.table_name = I.TABLE_NAME
LOOP
dbms_lob.writeappend(c, length(MYSQLTEXT.MYSQL),MYSQLTEXT.MYSQL);
END LOOP;
e:='select null, null, null, null, null, null, null, null, null, null, null from dual where rownum < 0 ';
dbms_lob.writeappend(c, length(e),e);
execute immediate to_char(c);
end loop;
end;

Answer 1

Most likely issue is:
execute immediate to_char(c); TO_CHAR will raise numeric or value error if c exeeds 4000 bytes. What Oracle version you are on? In newer versions execute immediate supports CLOB, so you can chnege the above to:
execute immediate c;Keep in mind, execute immediate has 32K limit on SQL string.
SY.