Question: Am I getting the ORA-29275
error on a SQL query. How can I find the affected rows
and how to I fix the data to remove the ORA-29275 error?
Answer: The oerr
utility gives us this information on the ORA-29275 error:
ORA-29275: partial multibyte character
Cause: The requested read operation
could not complete because a partial multibyte character was
found at the end of the input.
Action:
Ensure that the complete multibyte character is
sent from the remote server and retry the operation. Or read
the partial multibyte character as RAW.
The core issue of that the nls_chracterset values
for the multibyte character set does not match between
either two databases in a distributed query, or a query
where the webserver has a different character set.
There are several possible fixes for the ORA-29275 error,
all involving getting the NLS character sets to match:
1 - write a function to convert each row. Place this
function inside a PL/SQL function and call it for each row
of the table:
CONVERT(COLUMN
NAME,'NLS_CHARACTERSET','NLS_CHARACTERSET');
2 - If
you have a webserver, try setting the NLS_LANG environmental
variable on the webserver to american_america.al32utf8.
References:
See MOS Note 69518.1 - Storing and Checking Character
Codepoints in an UTF8/AL32UTF8 (Unicode) database.
See MOS Note
788156.1 - AL32UTF8 / UTF8 (Unicode) Database
Character Set Implications
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