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ORA-06502: PL/SQL: 'Numeric or Value Error' When CLOB Convert to VARCHAR2 on a Multibyte Database (Doc ID 827955.1)

Last updated on JANUARY 30, 2022

Applies to:

PL/SQL - Version to [Release 8.1.7 to 11.2]
Information in this document applies to any platform.


On a database with multibyte characterset like AL32UTF8 specified for NLS_CHARACTERSET the following error is received when a CLOB which contains more than 8191 characters is assigned to a VARCHAR2 variable.

ORA-06502: PL/SQL: numeric or value error when CLOB convert to VARCHAR2

You can reproduce the error with the below code:


Exception Stack:

ERROR at line 1:
ORA-06502: PL/SQL: numeric or value error
ORA-06512: at line 10


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