Default encoding used while saving a varchar2(char) to a varchar2(byte) field.

[Pushker Chaubey]

Hi,

Here is the situation.

1) We are using oracle DB. we have a field in one of the table and that is having the type varchar2(500 bytes). please note that it is 500 bytes not characters.

2) From my java code I am using pstmt.setString() to set a value in this field.


- I want to know encoding will be used here to change characters to bytes -- the one configured in DB, Or the one which is default for the JVM. Or if there exists any default encoding setting at jdbc driver level.

- Also please let me know how to figure out default encoding used in this case. Any code snippet which will get me the encoding being used here?


Thanks in advance!
Pushker Chaubey

[Martin Vajsar]

The data will be stored using database character set. You can display this (and other national specific settings) with the following:

SELECT * FROM NLS_DATABASE_PARAMETERS;

Look for the NLS_CHARACTERSET parameter. You should not need any specific privileges.

If you don't know what the database character set is, you may consider the NVARCHAR2 datatype. NVARCHAR2 is independent on the database character set.

[Pushker Chaubey]

Thanks a lot for your response sir!