Unique constraint error but key when inserting unique keys!

Question

Hi,
I am tring to update an existing database with some older data, I am getting an error which complains about a unique constraint being violated although there is no voilation evident after testing.
I am puzzled by this and was wondering if someone could give me any extra info on another possible cause.
I googled but found that this error is caused by duplicating primary keys which I am not doing though I still get this error.
I run this query then the update and get the output below:
desc test_sales;
desc sales_order;
SELECT order_id FROM sales_order WHERE order_id IN (SELECT order_id FROM test_Sales);
INSERT INTO sales_order
(order_id,order_date,customer_id, ship_date,total)
SELECT 
      order_id,
      order_date,
      cust_id,
      ship_date,
      total
FROM
      test_sales;
desc test_sales;
Name                           Null     Type                                                                                                                                                                                         
------------------------------ -------- CUST_ID                                 NUMBER(6)                                                                                                                                                                                    
OLD_SYSTEM_ID                           VARCHAR2(25)                                                                                                                                                                                 
DESCRIPTION                             VARCHAR2(35)                                                                                                                                                                                 
ORDER_DATE                              DATE                                                                                                                                                                                         
SHIP_DATE                               DATE                                                                                                                                                                                         
QUANTITY                                NUMBER                                                                                                                                                                                       
ORDER_ID                       NOT NULL NUMBER(4)                                                                                                                                                                                    
ITEM_ID                        NOT NULL NUMBER(4)                                                                                                                                                                                    
SITE_COUNT                              NUMBER(2)                                                                                                                                                                                    
TOTAL                                   NUMBER(8,2)                                                                                                                                                                                  
PRODUCT_CODE                            NUMBER(6)                                                                                                                                                                                    
LIST_PRICE                              NUMBER(8,2)                                                                                                                                                                                  
12 rows selected
desc sales_order;
Name                           Null     Type                                                                                                                                                                                         
------------------------------ -------- ORDER_ID                       NOT NULL NUMBER(4)                                                                                                                                                                                    
ORDER_DATE                              DATE                                                                                                                                                                                         
CUSTOMER_ID                             NUMBER(6)                                                                                                                                                                                    
SHIP_DATE                               DATE                                                                                                                                                                                         
TOTAL                                   NUMBER(8,2)                                                                                                                                                                                  
5 rows selected
ORDER_ID              
0 rows selected
Error starting at line 7 in command:
INSERT INTO sales_order
(order_id,order_date,customer_id, ship_date,total)
SELECT 
      order_id,
      order_date,
      cust_id,
      ship_date,
      total
FROM
      test_sales
Error report:
SQL Error: ORA-00604: error occurred at recursive SQL level 1
ORA-06502: PL/SQL: numeric or value error: character string buffer too small
ORA-06512: at line 8
ORA-00001: unique constraint (MICHAELKELLY.SYS_C00210356) violatedMessage was edited by:
Mike1981
Message was edited by:
Mike1981

Answer 1

ORA-00001: unique constraint (MICHAELKELLY.SYS_C00210356) violated
=> check dba_cons_columns to see what the constraint actually exists off