How to fix the Oracle error ORA-64203: Destination buffer too small to hold CLOB data after character set conversion.?

In this post, you’ll learn more about the Oracle ErrorORA-64203: Destination buffer too small to hold CLOB data after character set conversion. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-64203: Destination buffer too small to hold CLOB data after character set conversion.

Reason for the Error ORA-64203: Destination buffer too small to hold CLOB data after character set conversion.

An attempt was made to convert CLOB to CHAR, where the LOB size was bigger than the buffer limit for CHAR types or the CHAR buffer was not big enough to hold all data after character set conversion.

How to fix the Error ORA-64203: Destination buffer too small to hold CLOB data after character set conversion. ?

You can fix this error in Oracle by following the below steps

Do one of the following:

* Make the LOB smaller before performing the conversion. for example, by using SUBSTR on CLOB

* Use DBMS_LOB.SUBSTR to convert CLOB to CHAR.