Слишком маленький буфер для преобразования CLOB в CHAR или BLOB в RAW - PullRequest
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Слишком маленький буфер для преобразования CLOB в CHAR или BLOB в RAW

0 голосов
/ 14 мая 2019

Я написал этот скрипт и теперь получаю сообщение об ошибке:

"Буфер слишком мал для преобразования CLOB в CHAR или BLOB в RAW (фактическое значение: 68579, максимальное значение: 4000)".Как я могу это исправить? 


set serveroutput on;

Declare
  match_count     Number       :=0;
  v_from          NUMBER(19)  :=2019030651;
  CURSOR s is
        (SELECT owner, table_name, column_name
        FROM    ALL_TAB_COLUMNS
        where   
            owner   LIKE 'SOMETHING_%' 
        );
begin       
for t in s  LOOP
     begin
      EXECUTE IMMEDIATE 'SELECT count(*) FROM '||t.owner || '.' || t.table_name|| ' WHERE '||t.column_name||' LIKE :1' INTO match_count USING v_from;
      IF match_count > 0 THEN
              dbms_output.put_line( t.table_name ||' '||t.column_name||' '||match_count );
      END IF;
      end;
  END LOOP;
end;

Error report -
ORA-22835: Buffer too small for CLOB to CHAR or BLOB to RAW conversion (actual: 68579, maximum: 4000)
ORA-06512: at line 19
ORA-06512: at line 19
22835. 00000 -  "Buffer too small for CLOB to CHAR or BLOB to RAW conversion (actual: %s, maximum: %s)"
*Cause:    An attempt was made to convert CLOB to CHAR or BLOB to RAW, where
           the LOB size was bigger than the buffer limit for CHAR and RAW
           types.
           Note that widths are reported in characters if character length
           semantics are in effect for the column, otherwise widths are
           reported in bytes.
*Action:   Do one of the following
           1. Make the LOB smaller before performing the conversion,
           for example, by using SUBSTR on CLOB
           2. Use DBMS_LOB.SUBSTR to convert CLOB to CHAR or BLOB to RAW.

1 Ответ

0 голосов
/ 14 мая 2019

Достаточно ли вам просто запросить типы данных "NUMBER"?

set serveroutput on;

Declare
  match_count     Number       :=0;
  v_from          NUMBER(19)  :=2019030651;
  CURSOR s is
        (SELECT owner, table_name, column_name
        FROM    ALL_TAB_COLUMNS
        where   data_type = 'NUMBER' and
            owner   LIKE 'SOMETHING_%' 
        );
begin       
for t in s  LOOP
     begin
      EXECUTE IMMEDIATE 'SELECT count(*) FROM '||t.owner || '.' || t.table_name|| ' WHERE '||t.column_name||' LIKE :1' INTO match_count USING v_from;
      IF match_count > 0 THEN
              dbms_output.put_line( t.table_name ||' '||t.column_name||' '||match_count );
      END IF;
      end;
  END LOOP;
end;
...