Forms12c: Unicode Characters Garbled when Insert/Update into NVARCHAR2 in NON-UNICODE Database.
Last updated on SEPTEMBER 02, 2017
Applies to:Oracle Forms - Version 220.127.116.11.0 and later
Information in this document applies to any platform.
Since 11.1.2.x, a new Forms datatype of NCHAR has been introduced. So Forms can handle NCHAR and NVARCHAR data.
Oracle Fusion Middleware Forms Services Deployment Guide 11g Release 2 (11.1.2) E24477-03
2.5 Support for Unicode Columns
However, if your database character set is non-Unicode Forms tries to INSERT or UPDATE data into unicode columns in the database then those characters will be replaced by the '?' character.
For example, below situation
- Database setting is below
- Added NLS_LANG=Japanese_Japan.AL32UTF8 in default.env
※Detail is on Online Help(Forms Builder 12c - keyword: NCHAR )
- Set NCHAR for Data Type
- Implement below code for WHEN-BUTTON-PRESSED
e.g.(In this case INS-1)
INSERT INTO TEST_TABLE(COL_VARCHAR, COL_NVARCHAR2) VALUES(:BLK2.COL_VARCHAR, :BLK2.COL_NVARCHAR2);
Press button "INS-1" to insert Characters
Result is characters garbled like [e.g. '?'].
If you use below code on WHEN-BUTTON-PRESSED, Press button "INS-2" to insert Charactors
e.g(In this case INS-2)
COL_VARCHAR := :BLK1.TXT_CHAR;
COL_NVARCHAR := :BLK1.TXT_NCHAR;
INSERT INTO TEST_NCHAR
Result is working fine
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