获取错误ORA-06502:PL/SQL:数值或值错误

Question

我得到了

ORA-06502:PL/SQL:以下代码中出现数值或值错误：

record_state := record_state || 'Inserting record Entry for student: ' || 
                roll_no || ' for date: ' || To_Char(admission_date,'yyyymmdd') ||
                ' @ ' || TO_CHAR(SYSDATE, 'YYYY-MM-DD HH24:MI:SS') || CHR(10);

roll_no        - NUMBER(10,0)
admission_date - TIMESTAMP(6)
record_state   - CLOB

Answer 1

如果您有lob对象，我建议使用dbms_lob库。

DECLARE
  record_state  CLOB;  
BEGIN
  DBMS_LOB.CREATETEMPORARY(record_state);  

  -- here you should make sure that the string is not too long (max 32K), otherwise the concatenation with pipes will not work. There will be an exception.
  DBMS_LOB.append (record_state , 'Inserting record Entry for student: ' || roll_no || ' for date: ' || To_Char(admission_date,'yyyymmdd') || ' @ ' || TO_CHAR(SYSDATE, 'YYYY-MM-DD HH24:MI:SS') || CHR(10)); 

  -- do more operations
  dbms_lob.freetemporary(record_state);

END ;
/