Need help on changing parameter NLS_LENGTH_SEMANTICS

hi All,
Oracle is 11.2.0.1.0
Initially our db parameter NLS_LENGTH_SEMANTICS='CHAR' for one table I am getting error
like
ORA-01450: maximum key length (6398) exceeded Missing Resource String.
I changed it NLS_LENGTH_SEMANTICS='BYTE'
now I am able to create that table
Is there any side effect if I am changing NLS_LENGTH_SEMANTICS from CHAR to BYTE
like
ALTER SYSTEM SET NLS_LENGTH_SEMANTICS='BYTE' scope=both;
Please help me .
Thanks In advance.

Hi;
Please check below notes which could be helpful to get your answer
SCRIPT: Changing columns to CHAR length semantics ( NLS_LENGTH_SEMANTICS ) [ID 313175.1]
Examples and limits of BYTE and CHAR semantics usage (NLS_LENGTH_SEMANTICS) [ID 144808.1]
Changing NLS_Length_semantics from BYTE to CHAR [ID 974744.1]
Can The Parameter NLS_LENGTH_SEMANTICS Be Changed From BYTE To CHAR? [ID 906801.1]
Regard
Helios

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